Laptops and Tablets β€’ Recommendations and advice


Laptop Hard Drive How To Choose

This article will show you how to choose a hard drive for a laptop or computer.

So where do you start? Many will start their choice with volume, i.e. How many gigabytes or terabytes to buy a hard drive. In principle, it is the master’s business here. Buy as much as you want. But in order not to overpay extra money, think about how much information and what information you are going to store on it. For example, you want to collect a large library of films on your computer, and even in HD quality. Then, without a doubt, you can buy a hard drive of 2, 3 or more terabytes. Here, as they say, the more the better. Well, if you need a computer mainly to work with documents and sometimes download music, and several videos from the Internet, then, most likely, 320. 500 gigabytes will be more than enough for you.

Now let’s plunge a little into the technical details, which should be known by everyone who independently decided to install a hard drive in their computer.

Types of hard drives.

HDDs are ordinary hard drives, which are most often used in computers, which contain both an electronic and a mechanical device, i.e. Microcircuits and magnetic disks with magnetic heads that read and write information from THESE plates.

SSDs are solid state hard drives that are made up of memory chips and have no mechanics inside. As a result, they are five times faster than conventional hard drives. But they are much smaller in volume, and they are more expensive than conventional disks. It is good to install the operating system on them. the computer will boot up and work faster.

Therefore, if you want to get the maximum performance from your computer and store large amounts of data, it would be advisable for you to purchase one SSD disk for the system and an HHD disk for data storage. Well, if you don’t really need a high speed of work, you can get by with one ordinary hard drive.

Form factor. Everything is simple here. Hard drives come in two form factors. 2.5 and 3.5 inches. 2.5 form factor drives “used in laptops, and 3.5”. in desktop PCs. It should be noted that 2.5 “can be used in desktop computers, for this only, you need to purchase special fasteners separately.

Hard drive interfaces.

In other words, it is a method of connecting a hard drive to the computer’s motherboard. There were only two of them. IDE and SATA. Why was it? Because the IDE interface is no longer used, because. Morally out of date.

Although sometimes there may still be discs with such an interface on sale, you should not take them, because. You cannot physically connect such a disk to a modern motherboard, because it simply has a corresponding connector. So, be careful in this regard, and take only drives with SATA interface.

But here the question may arise, which SATA? Because the SATA interface is of three types. it’s just SATA, SATA ll, SATA lll. There is nothing difficult here either. All of them are compatible with each other and differ in data transfer speed. SATA. 1.5 gigabits / sec, SATA ll. 3Gb. / Sec and SATA lll. 6GB. / Sec. SATA is outdated and NOT in production, so choose from the latter two. The documentation for the motherboard will help you with this, which says which one it supports. For example, your new board supports SATA lll, you can supply both a SATA ll hard drive and a SATA lll hard drive. With the latter, of course, the system will run faster. But to the motherboard of the SATA ll interface, the SATA lll hard drive makes no special sense, although it is possible. The speed will still be 3GB. / Sec., Not 6.

Here are general guidelines that can help you choose a hard drive for your computer.


There isn’t even much to discuss here. A laptop is a mobile computer, and then its hard drive must be strong enough to withstand shock and vibration well. The main danger here lies in the fact that in a normal position the read head seems to hover above the surface of the disk, and any sharp jolt can lead to the fact that it will hook and damage it. Today, this is the main prerequisite for the breakdown of hard drives in laptops, and then it is better to give preference to special HDD models. They have a special head parking system, which quickly takes them away from the surface after the end of the work, which minimizes the risk of damage.

Criterias of choice

HDD vs SSD. isn’t it better to go with solid state drives??

In fact, the question is extremely topical. Recently, SSDs have made a real breakthrough and have quickly flooded the market. Every year the number of their adherents is growing steadily, and this is not at all difficult to explain. Solid state drives have a lot of advantages, among which the most obvious are:

  • Very high speed of writing and reading;
  • High reliability (due to the absence of moving parts);
  • Practically comments on delays when working with data;
  • SSD does NOT heat up;
  • DOES NOT vibrate;
  • Differs in absolute noiselessness;
  • Lighter and more compact than any HDD.

In general, it is enough to give preference to them. However, there is one feature of SSDs that prevents them from completely ousting the traditional solution from the market. this is an extremely unfavorable ratio of price and capacity. Here HDD is beyond competition.

In view of the indicated shortage of solid-state drives, special hybrids began to appear on the market, which are a regular HDD disk with a built-in SSD module for processing cache. They differ in quite an acceptable price, but at the same time, due to accelerated data caching, they significantly increase the overall efficiency of laptops and computers. So it makes sense, pay attention to this option.

How to choose a laptop hard drive

How do you pick a good laptop and not get too broke? The question is more urgent than ever. And, although, to a large extent, the price of this type of technology depends on the characteristics of such details as a processor, video card and screen diagonal, there is one more nuance, which also significantly affects the final price of a laptop. And this nuance is the capacity of the storage device. That is why experienced users often purchase a device with a minimum storage volume in order to choose a more suitable option for themselves in the future, which in any case will be cheaper.

Replacing a “native” drive with a new one can also be caused by such reasons as its breakdown or the desire to expand the general functionality of the laptop. However, regardless of the reason, it is better to arm yourself with all the necessary knowledge in advance so that the question of how to choose a hard drive for a laptop does not take the user by surprise.

Can I use a regular HDD for a PC on a laptop?

There are any fundamental limitations in this direction. If the dimensions of the laptop allow, then it is quite possible to use a traditional drive. Only it won’t be able to get into the body, it will hang separately on the wires, because It is larger than standard laptop hard drive bays.

However, this also has its own peculiarities. Desktop hard drives differ in two dimensions: size and power consumption. Therefore, if the laptop battery cannot provide a sufficiently high level of autonomy, it is certainly better to choose a dedicated laptop HDD. How to distinguish it from the traditional one? Everything is simple here. it will be presented in a 2.5-inch form factor, while the classic format for a PC drive is 3.5 inches. See for yourself, it’s not difficult to distinguish:

What requirements should a hard disk meet?

This type of equipment has only two basic requirements: reliability and speed of operation.

It is also worth noting that you need to select a compatible device for your laptop. Otherwise, you DO NOT connect it.

M.2 and mSATA connectors

If you become “happy” the owner of the M.2 connector, the usual type of disk will not suit you. The disk looks like this

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In addition to the non-standard connector, the length of the disk can also be different. In the picture we see discs, the dimensions of which, respectively, are designated as 2280, 2260 and 2242, where 22 is the width in millimeters, and 80, 60 and 42 are the length in millimeters.

In the case of mSATA, the disks look like this:

Msata is a kind of SATA, only in a reduced form.

Work speed

Although this point is probably equally important for both laptops and PCs. This parameter is responsible for the boot and shutdown time of the laptop, as well as the overall speed of task execution. Due to the fact that the battery life of the laptop is seriously limited, this item also plays an important role.

Disk speed characteristics

The speed characteristics common to HDD, SSHD and SSD drives include linear read / write speed and random access time.

HDD connectors

All hard drives have an interface connector and a power connector.

6.4. Data backup

When choosing a disk size, it is also advisable to take into account the need to create a backup copy of user files (video, photos, etc.), which will be stored on it. Otherwise, you risk losing in one moment everything that you have accumulated over the years. Therefore, it is often more advisable to purchase not one huge disk, but two smaller disks. one for work, the other (possibly external) for backing up files.

Hard drive manufacturers (HDD, SSHD)

The most popular hard drive manufacturers are the following:

Seagate. makes some of the fastest drives today, but they are NOT considered the most reliable.

Hitachi. have proven themselves to be of consistently good quality.

Western Digital (WD). considered the most reliable and have a convenient color classification.

  • WD Blue. Budget General Purpose Drives
  • WD Green. Quiet and Economical (turn off frequently)
  • WD Black. fast and reliable
  • WD Red. for storage systems (NAS)
  • WD Purple. for video surveillance systems
  • Wdgold. for servers
  • Wdre. for RAID arrays
  • Wdse. for scalable enterprise systems

Blue. the most common discs, suitable for low-cost office and multimedia PCs. Black combines high speed and reliability, I recommend them for use in powerful systems. The rest are designed for specific tasks.

In general, if you want cheaper and faster, then choose Seagate. If cheap and reliable. Hitachi. Fast and reliable. Western Digital Black.

Hybrid SSHD disks are now produced mainly by Seagete and they are of good quality.

There are also discs of second manufacturers on sale, but I recommend limiting ourselves to the indicated brands, since there are fewer problems with them.

Basic disk parameters

The main parameters of disks, which are often indicated in prices, include the spindle speed and the size of the memory buffer.

laptop, hard, drive, choose

5.1. Interface connector

The interface connector is the connector for connecting the disk to the motherboard using a special cable (loop).

Modern hard disk drives (HDD) have a SATA3 connector, which is fully compatible with older versions of SATA2 and SATA1. If your motherboard has old connectors, don’t worry, you can plug in a new hard drive and it will work.

But for an SSD drive, it is desirable that the motherboard has SATA3 connectors. If your motherboard has SATA2 connectors, then the SSD drive will work at half its speed (about 280 Mb / s), which, however, is still much faster than a conventional HDD.

8.3. Access time

Access time is the second most important disk parameter after read / write speed. The access time especially strongly affects the speed of reading / copying small files. The lower this parameter, the better. In addition, the low access time indirectly indicates a higher quality of the hard disk drive (HDD).

A good hard disk drive (HDD) access time is 13-15 milliseconds. Values ​​in the range of 16-20 ms are considered a bad indicator. I will also talk about how to determine this parameter in this article.

As for SSD drives, their access time is 100 times shorter than that of HDD drives, so this parameter is not indicated anywhere and is not paid attention to.

How to choose a hard drive (HDD, SSD, SSHD)

What is the difference between hard, hybrid and SSD disks, their parameters (volume, speed), which disk to choose for an office, home, gaming computer and laptop.

A hard disk is needed to install the operating system, programs and store various user files (documents, photos, music, movies, etc.).

Hard drives differ in volume, on which the amount of data that it can store depends, in speed, on which the performance of the entire computer depends, and reliability, which depends on its manufacturer.

13. Optimal disk

So, which disk or disk configuration to choose for your computer, depending on its purpose. In my opinion, the following configurations will be most optimal.

  • Office PC. HDD (320-500 GB)
  • Entry-Level Multimedia PC. HDD (1 TB)
  • Mid-Range Multimedia PC. SSD (120-128GB) HDD (1TB) or SSHD (1TB)
  • Entry Level Gaming PC. HDD (1TB)
  • Mid-Range Gaming PC. SSHD (1TB)
  • High End Gaming PC. SSD (240-512GB) HDD (1-2TB)
  • Professional PC. SSD (480-1024 GB) HDD / SSHD (2-4 TB)

Noise and crackling during operation

I also think that an important indicator of hard drives is the noise during operation. The fact is that hard drives, unlike SSDs or flash drives, are mechanical devices, and therefore they make noise. Usually, the noise is kept within normal limits and is not particularly noticeable. But it happens when the noise or crackling becomes very annoying! And if a computer case is cheap or just unsuccessful, then it trembles to the beat of the disk! Unfortunately, before buying a device, it is unlikely that it will be possible to find out how it will behave. Therefore, if such a problem arises, then just do some simple actions so that the hard drive does not crack.

Hard disk space

Gone are the disks with 40 or 80 GB of memory. Now on the market, hard disk capacity is measured in hundreds of gigabytes and terabytes. How much disk space should you choose? Much depends on what kind of work is being done on the computer and how much space you really need. You have to pay more for a larger volume. It is better to start with real needs with 20-50% margin, rather than how much disk space your friend or neighbor installed, since he may actually need a lot.

I am sometimes asked how many megabytes are in 1 gigabyte, or how many gigabytes are in a terabyte. Everything here is simple, but funny. In fact, there are 1024 bytes in one kilobyte, i.e. 1K = 1024B. One megabyte has 1024 kilobytes, one gigabyte has 1024 megabytes, and one terabyte has 1024 gigabytes. But the manufacturers of hard drives went for a little trick and took for the multiplier NOT 1024, but the number 1000, ostensibly so that buyers would NOT get confused

Aha, cool! Only now, having installed a drive with a capacity of, say, 500GB, we will see only 465GB available! Because the computer still counts gigabytes as expected!

I think it’s clear how to choose a hard drive in terms of volume, but I want to warn against buying a disk with a volume of more than 2TB. If your motherboard is running a regular BIOS, then you still will NOT see more than 2TB! These models require UEFI instead of BIOS. To check this, go to the BIOS and carefully read its interface and settings in the “Boot” menu. If the word “UEFI” appears, then consider yourself lucky Or just read the instructions for the computer motherboard.

But is everything limited to disk space? Comments, there is another important point. speed.

How to choose a hard drive, experienced tips

Hello! Finally, I found time to please you with new material! I apologize for not writing for so long. The fact is that I worked on one project, in which I will tell you more in the future (Subscribe to blog updates).

Why do you have to buy a new hard drive? Each may have their own reasons, but this basically means that the speed of work and the loading of programs has noticeably decreased, or there is not enough space to write new information to the computer. Whatever the reason might be to buy a new hard drive, everyone has something to think about before making a purchase. So let’s figure out how to choose a hard drive for your computer and what you need to take into account before buying. And below we will analyze a real example of buying a hard drive. After all, a sudden and rash decision can lead to the fact that the new HDD will NOT satisfy your needs.

Hard disk speed

A large disk does NOT yet guarantee fast loading of programs. It just allows you to accommodate more information. The speed of loading programs and their execution corresponds to the speed of the hard disk itself. Although, in principle, the capacity also affects the speed indirectly. T.K. The larger the volume, the higher the recording density, and, accordingly, less time is needed to read the data block. Simply put, a large disk will almost always be faster than a smaller disk, all other things being equal.

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Disk performance is measured by read / write speed in megabytes per second and data access time. Today you can find hard drives with speeds of 150-200MB / sec and more. Before choosing a hard disk, it is better to immediately decide on the issue of sufficient speed, because working with a disk at high speed is very convenient. Programs such as video or image editors, i.e. Heavy enough for the system, if the speed is insufficient, the disk will work slowly, and the response to the execution of each operation will increase.

You can check the speed of an existing disc yourself. HD Tune Pro works well for this. For example, here is my old man’s test

In terms of disk speed, some models have an interesting technology. NCQ. In translation, this means a built-in command queue. This feature does NOT directly add disc speed. With its help, the disk “remembers” the commands with which the system addresses it, and when the command is typed again, the “memory” of the hard disk immediately reminds it of the path along which this information is located. But for this mode to work, the SATA controller must work in AHCI mode (this is configured in the BIOS). All things being equal, it is better to choose a hard drive with NCQ support.

An important criterion in assessing the performance of a disk is its rotation speed. This is a very important criterion to be guided by when making a purchase. What does disk rotation speed affect? To search for information. It is clear that the faster the speed, the better. Standard rotation speeds: 5400 to 7200 rpm. Let’s just say that 5400 rpm is enough for data storage, and for installing the system and programs it is better to take a 7200 rpm hard drive. Discs with 5400 rpm are also called “green”, because. They consume less energy and make less noise.

Some models support 10,000-15,000 RPM. The need for such devices arises with very active use of a computer, more often for professional purposes, well, or for servers.


Every manufacturer, even the most famous, has discs of not the best quality. However, this does NOT mean that you have to buy whatever you get. It is worth paying attention to the name of the company, albeit without unnecessary fanaticism, since you also have to pay for the name of the disc. Each hard drive of any company has its own series. Even if some of the series of discs were NOT good, the same cannot be said for all of the company’s products.

Personally, I am impressed by the manufacturers Western Digital, Hitachi, Seagate. There are also Samsung hard drives, but in general their division was bought by Seagate. If you still lose your data, then try to recover it using the program.

How to choose a hard drive for your computer

Hard drives are internal, which are installed in the computer, and external. Internal ones are ordinary (size 3.5 “for computers) and for laptops (2.5 form factor”). This article will focus specifically on internal drives.

Well, let’s go choose a hard drive?

For example, if you take a hard drive from Yandex.Market, you can see its properties:

I specially took the server version of the disk in order to show more parameters than are published for inexpensive models.

Here you can see that the form factor of the 3.5 “, which means it is suitable for installation in a computer. Next, we see the volume of 600GB and the size of the buffer memory is 32MB. This size affects the speed of the hard drive, the more the better.

Further in the “Interface” section you can see that SATA 6Gb / s connection is supported. This is the kind of connection you need for your desktop computer. NOT IDE or SCSI, namely SATA. Note that the 600MB / s speed shown here has nothing to do with disk speed.This is just the theoretical speed of the SATA interface.

The time characteristics indicate the access time to the disk, the less. the better and the faster.

The Mechanical / Reliability section provides approximate noise and shock resistance. Look at these parameters in the very last place, or you can skip them altogether, because This is data from the manufacturer, which, firstly, are very similar for most hard drives, and secondly, they have little in common with specific copies

Total that we have?

These are the main metrics to look out for when buying a hard drive. Yet the choice is not always easy in practice. You always have to sacrifice something. Sometimes the speed, and sometimes the amount of memory. Whatever prog? To do this, you should think about which hard drive to choose.

If a hard drive is purchased for the purpose of storing information, it is better to give preference to volume, and if the purchase is made in order to increase the performance of a computer. speed. Besides, the number of platters on the hard drive will also serve as a hint. The more plates, the more noise will come from the computer. This is especially true for external hard drives.

I also want to mention the new hybrid drives. In such models, two technologies are combined: a conventional hard drive and an SSD. At the same time, the SSD has a capacity of about 4GB and is used as a kind of cache. The most frequently read data is written to flash memory, due to which the reading speed can jump significantly. Unfortunately, this does not affect the write speed in any way.

And for dessert, I suggest you watch this super-funny joke about DPSnik! :)))

Physical disk sizes

Desktop hard drives are 3.5 inches.

SSDs are 2.5 ” in size, just like laptop hard drives.

In a regular computer, an SSD is installed using a special mount in the case or an additional adapter.

Recommended drives

For those who do not have time to read the entire article, I will immediately give recommendations on brands, size and type of disks, depending on the purpose of the computer.

Conventional hard disk drives (HDD) are large in capacity, not high speed and cost. Solid state drives (SSDs) are the fastest, but they are small and cost significantly more. An intermediate option between them are hybrid drives (SSHD), which have sufficient capacity, are faster than conventional HDDs and cost a little more.

Western Digital (WD) hard drives are considered the most reliable. The best SSD drives are made by: Samsung, Intel, Crucial, SanDisk, Plextor. As more budget options, you can consider: A-DATA, Corsair, GoodRAM, WD, HyperX, since there are the least problems with them. And hybrid disks (SSHD) are mainly produced by Seagate.

For a multimedia computer (video, simple games), it is better to use a 1 TB WD Blue disk as an additional one for storing files, and install a 120-128 GB SSD as the main one, which will significantly speed up the system and programs. 120GB

For a gaming computer, it is advisable to take an SSD with a volume of 240-256 GB, it will be possible to install several games on it. A-Data Ultimate SU650 240GB Hard Drive

For a more economical option for a multimedia or gaming PC, you can purchase one 1TB Seagate Hybrid Drive (SSHD), which is not as fast as an SSD, but is still slightly faster than a conventional HDD.

I also recommend purchasing a high-quality external USB 3.0 drive from Transcend for 1-2 TB for backing up the system and important files (documents, photos, videos, projects). Transcend StoreJet 25M3 1 TB Hard Drive

Which hard drive to choose for a laptop. a complete guide

5.2. Power connector

Modern hard disk drives (HDD) and solid state drives (SSD) have the same 15-pin SATA power connectors. If the drive is installed in a desktop computer, its power supply must have such a connector. If not, you can use a Molex-SATA power adapter.

Specifications 2.5 “hard drives

As you can see from the graph, the lowest price for 1GB is achieved with 2TB hard drives. The price of 1 GB on disks 1, 3, 4 and 5 TV is slightly higher, but at about the same level. But with a decrease in volume below 1 TB, the price of a unit of disk space begins to grow rapidly.

If you are going to buy a new hard drive larger than 2TB (although the old one was smaller), you should make sure that your laptop can fully use it. For this, 3 conditions must be met:

  • Laptop motherboard controller must support hard drives larger than 2.2TB.
  • Your laptop’s operating system must have support for GPT (GUID Partition Table. the new standard for hard disk partition tables, capable of addressing more than 2 TB). Such systems include Windows from version 7, MAC OS from version 10.6 and all modern linux distributions.
  • The motherboard must have UEFI firmware to boot from hard drives larger than 2.2TB. This requirement is only true if booting from a large disk. In some laptops, it is possible to install a second hard drive, in such models, a hard drive with a capacity of more than 2.2 TB can be installed as a second one, even if the Legacy BIOS is flashed on the motherboard, and not UEFI.
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However, all laptops released after 2011 meet these requirements; problems can arise only with older equipment.

Standard thickness 2.5 “hard drives. 9.5 mm. However, today with the development of technology, the thin (thin) standard. 7 mm is becoming more and more popular. Also quite common (especially among large drives) “thick” disks with a thickness of 15mm. If a regular place in a laptop is intended for a 7 or 9.5 mm HDD, then such a drive will simply not fit into its place.

In the opposite situation, too Not everything is simple. if the hard drive is fixed on a slide, then replacing the hard drive with a thin one will not cause any problems. But in some models of the sled comments, the hard drive is held by the connector and does NOT dangle due to the tight pressure against the case. In this case, when replacing it with a thin disk, it should be pressed against the case with a seal made of dielectric material (sometimes it comes with the hard disk), otherwise the disk will dangle in the case and the load on the connector will increase.

The higher the spindle speed, the faster the data from the hard disk will be read by the head. But that’s in theory. In practice, the file being read is often “scattered” over the entire surface of the disk, and the speed of positioning operations, which is NOT related to the rotation speed, has a greater effect on performance.

Data transfer speed It also does not fully characterize disk performance. it is the maximum achievable read / write speed. In real work, this speed can be achieved only when rewriting large non-fragmented files (consisting of blocks sequentially located on the disk). During normal operation, the read / write speed will be much lower.

To speed up the work of the hard disk, cache memory (buffer) is used: during read / write operations, data passes through memory chips and is stored on them for some time (buffered). If they are needed again in the near future, they will NOT be read from disk, but received directly from the cache memory, which is many times faster.

In hard drives used for storing data, the buffer size does not significantly affect the speed of operation, and 32 MB is usually quite enough to store service information in the disk. However, a laptop disk is almost always used Not only for storing data, but also as a system disk. both the system itself and many working programs store many small files on it.

An interesting solution is offered by hybrid SSHD drives. they implement a second-level cache on Flash-memory chips. In fact, it is an HDD paired with an SSD used as a cache. The SSD buffer is already large enough to fit all the main system files.

When choosing an interface for a hard disk, you should be guided by the specification of the laptop motherboard. which interface is supported by it, this should be the drive. Modern disks for data transfer use either SATA (which is a development of the IDE interface, which has long been used on the PC), or SAS (based on the SCSI server interface). SATA HDD can be connected to a SAS controller, but vice versa. there is.

The bandwidth of the SATA II interface is 3 Gb / s, SATA III. 6 Gb / s, SAS-12 Gb / s. But taking into account the maximum read / write speed of 300 Mbps, the impact of the interface directly on the disk performance is minimal.

Operation 2.5 “hard drives is associated with increased shock loads. if the hard drive in a stationary computer is” does not bother ”, then inside a mobile laptop it often experiences significant shock. Pay attention to this parameter if you are working with a laptop not at a table, but on the weight, on your knees or on random surfaces. in this case, shock resistance is typical for stationary HDDs when working at 40G (falling from a height of 1 “) may already be insufficient.

Linear read speed is the main parameter for any disk and dramatically affects the speed of its operation.

For modern hard and hybrid drives (HDD, SSHD), a good value is an average read speed closer to 150 MB / s. You should NOT buy hard drives with a speed of 100 MB / s or less.

As for HDD drives, sellers in their usually do NOT indicate their speed parameters, but only their volume. Later in this article I will tell you how to find out these characteristics. Everything is easier with SSD drives, since their speed characteristics are always indicated in the price lists.

This is a secondary parameter after the read speed, which is usually indicated in conjunction with it. In hard and hybrid drives (HDD, SSHD), the write speed is usually slightly lower than the read speed and is not considered when choosing a disk, since they are mainly guided by the read speed.

In SSD drives, the write speed can be either lower or equal to the read speed. In the prices, these parameters are indicated with a slash (for example, 510/430), where a large number means a reading speed, a lower one means a writing speed.

On good fast SSDs, it is around 550/550 MB / s. But in general, the write speed affects the computer’s speed much less than the read speed. A slightly lower speed is allowed as a budget option, but not lower than 450/350 Mb / s.

HDD connectors

All hard drives have an interface connector and a power connector.

The interface connector is the connector for connecting the disk to the motherboard using a special cable (loop).

Modern hard disk drives (HDD) have a SATA3 connector, which is fully compatible with older versions of SATA2 and SATA1. If your motherboard has old connectors, don’t worry, you can plug in a new hard drive and it will work.

Basic disk parameters

The main parameters of disks, which are often indicated in prices, include the spindle speed and the size of the memory buffer.

The spindle has hard and hybrid disks based on magnetic platters (HDD, SSHD). Since SSDs are built on the basis of memory chips, they do not have a spindle. Here is the spindle speed of the hard disk depends on the speed of its work.

Laptop hard drives generally have a spindle speed of 5400 RPM, which allows them to run quieter, less heat and use less power.

A buffer is a memory chip-based hard disk cache. This buffer is designed to speed up the hard disk, but it does NOT have a big impact (about 5-10%).

Modern hard disks (HDDs) have a buffer size of 32-128 MB. In principle, 32 MB is sufficient, but if the difference in price is not significant, then you can take a hard disk with a large buffer size. Optimal for today 64 MB.

Reasons for buying hard drives

With the development of computer technology, all devices from this category began to rapidly decrease in size, gradually “growing” to versions. With hard drives, the same situation occurred, in total, external drives appeared, which are distinguished by ease of use and miniature size. The price, of course, also increased. However, buying such device options is not at all necessary, it all depends on the ultimate goal of the “upgrade”:

  • Increase the amount of memory. If the user’s goal is to simply increase the available memory, then there is no need to spend money on external options for the device. It is enough to select the appropriate format of the hard disk for the configuration of the computer, and then simply connect it as a secondary platform for storing data.
  • The main “hard drive” for the computer. In this option, you also do not need to spend money on mobile types of hard drives, but purchase an internal hard disk with good write speed and capacity.
  • Mobile storage location. If the user needs a voluminous drive, which is easy to transfer and use, then you should pay attention to the external hard drive. As a rule, such devices have a USB connector, which allows them to be connected to any PC without opening the system unit and digging through the wires. In addition, external hard drives can be connected to other equipment. video players, laptops, TVs, and then read data from them.

As for the internal devices, they should be chosen according to the following parameters.


With the development of computer technology, hard drives have changed the connector several times, through which it connects to the PC. The modern version has a SATA connector (for external. USB), it is used in almost all models of computers and drives. However, another interface. IDE. has NOT completely gone out of use yet.