Form factor
The form factor of a computer case characterizes, first of all, the internal volume. Main PC Form Factors:
—
Midi Tower. A representative of the tower family (tower cases) of medium size — about 45 cm in height with a width of 15-20 cm, with the number of external bays from 2 to 4. Most popular for middle-class home PCs.
—
Mini Tower. The most compact "vertical" case type, with a width of 15-20 cm, has a height of about 35 cm and (usually) less than 2 compartments with external access. Used mainly for office PCs that do not require high performance.
—
Full Tower. The tower case is one of the largest form factors for PCs today: 15-20 cm wide, 50-60 cm high, with up to 10 externally accessible bays. Most often in this form factor running advanced high performance PCs
—
Desktop. Enclosures designed for installation directly on the desktop. They often have the possibility of horizontal installation — in such a way that a monitor can be placed on top of the case — although there are also models that are installed strictly vertically. Anyway, "desktop" models are relatively small.
—
Cube Case. Cases having a cubic or close to it shape. They can have different sizes and are intended for different types of motherboards, this point in each case should be clar
...ified separately. Anyway, such cases have a rather original appearance, different from traditional "towers" and "desktops".Series
The main manufacturers of processors nowadays are
Intel and
AMD, also in 2020, Apple introduced its
M1 series CPUs (with further development as
M1 Max and
M1 Ultra), later showing the next generation
M2(
M2 Pro,
M2 Max,
M2 Ultra). The list of current Intel series includes
Atom,
Celeron,
Pentium,
Core i3,
Core i5,
Core i7,
Core i9 and
Xeon. For AMD, in turn, this list looks like this:
AMD Athlon,
AMD FX,
Ryzen 3,
Ryzen 5,
Ryzen 7,
Ryzen 9 and
Ryzen Threadripper.
In general, each series includes processors of different generations, similar in general level and positioning. Here is a more detailed description of each of the options described above:
— Atom. Processors originally designed for mobile devices. Accordingly, they are distinguished by compactness, high energy efficiency and low heat dissipation, but they “do not shine” with performance. Perfect for microcomputers (see "Type"), among the more "large-format" systems are extremely rare — mostly in the most modest configurations.
— Celeron. Low-cost-level processors, the most simple and inexpensive consumer-level desktop chips from Intel, with the appropriate characteristics.
— Pentium. A family of low-cost desktop processors from Intel that is slightly more advanced than Celeron, but inferior to models from the Core i* series.
— Core i3. The simplest and most inexpensive series of desktop Core chips from Intel includes chips of the low-cost and inexpensive middle class, which, nevertheless, surpass Celerons and Pentiums in terms of performance.
— Core i5. Medium-level family among Intel Core processors; and in general, the chips of this series can be attributed to the average level by the standards of desktop systems.
— Core i7. A series of high-performance processors that has long been the top among Core chips; only in 2017 did it lose this position to the i9 family. However, the presence of an i7 processor still means a fairly powerful and advanced configuration; in particular, such CPUs are found in premium-level monoblocks, and are also quite popular in gaming systems.
— Core i9. The top series among Core processors, the most powerful among general purpose Intel desktop chips. In particular, the number of cores even in the most modest models is at least 6. Such chips are used mainly in gaming PCs.
— Xeon. High-end Intel processors, the capabilities of which go beyond the standard desktop chips. Designed for specialized applications, among PCs they are found mainly in powerful workstations.
— AMD FX. A family of processors from AMD, positioned as high-performance and at the same time inexpensive solutions, including for gaming systems. Interestingly, some models come standard with liquid cooling.
— Ryzen 3. AMD Ryzen chips (all series) are promoted as high-end solutions for gamers, developers, graphic designers and video editors. It was among these chips that AMD pioneered the Zen microarchitecture, which introduced simultaneous multithreading, which made it possible to significantly increase the number of operations per clock at the same clock frequency. And Ryzen 3 is the most inexpensive and modest family among the "ryzens" in terms of characteristics. Such processors are produced using the same technologies as the older series, however, half of the computing cores are deactivated in Ryzen 3. Nevertheless, this line includes quite performant models, designed, among other things, for gaming configurations and workstations.
— Ryzen 5. A family related to the middle level among Ryzen processors. The second series on this architecture, released in April 2017 as a more affordable alternative to Ryzen 7 chips. Ryzen 5 chips have slightly more modest performance characteristics (in particular, lower clock speeds and, in some models, L3 cache size). Otherwise, they are completely similar to the "sevens" and are also positioned as high-performance chips for gaming and workstations.
— Ryzen 7. Historically the first series of AMD processors based on the Zen microarchitecture (for more details, see "Ryzen 3" above). One of the older families among the "ryzens", in terms of performance it is second only to the Threadripper line; many PCs based on these chips are gaming.
— Ryzen Threadripper. Specialized Hi-End processors designed for maximum performance. They are mainly installed in gaming systems and workstations.
— Apple M1. A series of processors from Apple introduced in November 2020. They belong to mobile solutions (see "Type" above), are performed according to the system-on-chip scheme: a single module combines a CPU, a graphics adapter, RAM (in the first models — 8 or 16 GB), an NVMe solid-state drive and some other components (specifically Thunderbolt 4 controllers). Accordingly, among PCs, the main scope of such chips are compact nettops. As for the characteristics, in the initial configurations, the M1 processors are equipped with 8 cores — 4 performant and 4 economical; the latter, according to the creators, consume 10 times less energy than the former. This, combined with the 5nm process technology, has made it possible to achieve very high energy efficiency and at the same time performance.
— Apple M1 Max. An uncompromisingly powerful SoC with a focus on maximizing Apple desktop productivity for complex tasks. The Apple M1 Max line was introduced in the fall of 2021, it debuted on board Mac Studio computers.
Apple M1 Max consists of 10 cores: 8 of them are productive, and 2 more are energy efficient. The maximum amount of built-in combined memory reaches 64 GB, the “ceiling” of its bandwidth is 400 GB / s. The graphics performance of the Max version of the M1 single-chip system is about twice that of the Apple M1 Pro. The chip contains over 57 billion transistors. An additional accelerator for the professional ProRes video codec has also been introduced into its design, which allows you to easily play multiple streams of high-quality ProRes video in 4K and 8K frame resolutions.
— Apple M1 Ultra. Formally, the M1 Ultra chip consists of two Apple M1 Max processors on a single UltraFusion substrate, which allows information transfer at speeds up to 2.5 Tbps. In the language of "dry" numbers, this bundle consists of 20 ARM computing cores (16 high-performance and 4 energy efficient), a 64-core graphics subsystem and a 32-core neural computing unit. The system-on-chip supports up to 128 GB of combined memory. About 114 billion transistors are packed into the processor package. The main purpose of the Apple M1 Ultra is to confidently work with complex resource-intensive applications in the manner of processing 8K video or 3D rendering. In life, the processor can be found on board Mac Studio desktop computers.
In addition to the series described above, in modern PCs you can find the following processors:
—
AMD Fusion A4.... The entire Fusion processor family was originally created as integrated graphics devices, combining a central processing unit and a graphics card in one chip; such chips are called APU — Accelerated Processing Unit. Series with the index "A" are equipped with the most powerful integrated graphics in the family, which in some cases can compete on equal terms with inexpensive discrete video cards. The higher the number in the series index, the more advanced it is; A4 is the most modest series among Fusion A.
— AMD Fusion A6. A series of processors from the Fusion A line, relatively modest, but somewhat more advanced than the A4. For common features of all Fusion A, see "AMD Fusion A4" above.
— AMD Fusion A8. A rather advanced series of Fusion A processors, the middle option between the relatively modest A4 and A6 and the high-end A10 and A12. For common features of all Fusion A, see "AMD Fusion A4" above.
— AMD Fusion A9. Another advanced series from the Fusion A family, slightly inferior only to the A10 and A12 series. For common features of all Fusion A, see "AMD Fusion A4" above.
— AMD Fusion A10. One of the top series in the Fusion A line. See "AMD Fusion A4" above for general features of this line.
— AMD Fusion A12. The top series in the APU Fusion A line, introduced in 2015; positioned as professional-level processors with advanced (even by APU standards) graphics capabilities. For general features of the Fusion A range, see "AMD Fusion A4" above.
— AMD E-series. This series of processors belongs to the APU, like the Fusion A described above, however, it is fundamentally different in specialization: the main scope of the E-Series are compact devices, in the case of PCs, mostly nettops (see "Type"). Accordingly, these processors have compactness, low heat dissipation and power consumption, but their computing power is also low.
— Athlon X4. A series of low-cost consumer-level processors, originally released in 2015 as relatively inexpensive and at the same time relatively performant solutions for the FM + socket.
— AMD G. A family of ultra-compact and energy-efficient processors from AMD, made on the principle of "system on a chip" (SoC). Unlike many similar chips, it uses the x86 architecture, not ARM. Positioned as a solution for devices with an emphasis on graphics, in particular, gaming. However, we are not talking about gaming PCs: like most processors of a similar "weight category", AMD G is found mainly in thin clients (see "Type").
— VIA. Processors from the company of the same name, mainly related to energy-efficient "mobile" solutions — in particular, many VIA models are directly compared with Intel Atom. However, despite the modest performance, such CPUs are found even among desktop systems; and in the future, the company plans to create full-fledged desktop chips, competing with AMD and Intel.
— ARM Cortex-A. A group of processors from ARM, the creator of the microarchitecture of the same name and the largest manufacturer of chips based on it. A feature of this microarchitecture compared to the classic x86 is the so-called reduced instruction set (RISC): The processor operates with a simplified instruction set. This somewhat limits the functionality, but allows you to create more compact, "cold" and at the same time performant chips. For a number of reasons, the ARM architecture is mainly used in "mobile" processors designed for smartphones, tablets, etc. This is also true for the ARM Cortex-A series; in PCs, such CPUs are rarely installed, and usually we are talking about a compact, modest device like a “thin client” (see “Type”).
— Nvidia Tegra. Initially, these processors were created for portable devices, but recently they have also been installed in PCs, mainly in monoblocks. They are "system-on-chip" devices that do not use the "desktop" x86 architecture, but the "mobile" ARM architecture, which requires the use of appropriate operating systems; the most commonly used is Android (see "Preinstalled OS").
— Armada. Another type of ARM architecture processors, positioned as high-performance solutions for cloud computing and home servers, including NAS. It is found in single models of "thin clients" (see "Type").
— Tera. A specialized family of processors designed specifically for "thin clients" (see "Type") and fundamentally different from classic CPUs (both full-size and compact). Tera-based systems are usually full-fledged "zero clients" (zero client), absolutely not capable of autonomous operation. In other words, these are devices designed to create a "virtual desktop": the user works with the interface and terminal equipment (monitor, keyboard, mouse, etc.), but all operations take place on the server. This allows you to provide increased security when working with sensitive data. But in more traditional PCs, Tera processors are practically inapplicable.
Of the outdated series of processors that can still be found in use (but not for sale), we can mention the Sempron, Phenom II and Athlon II from AMD, as well as the Core 2 Quad and Core 2 Duo from Intel.
Note that on the market there are configurations that are not equipped with a processor — in the expectation that the user can pick it up on his own; however, this is a rather rare option.Model
The specific model of the processor installed in the PC, or rather, its index within its series (see "Processor"). The full model name consists of the series name and this index — for example, Intel Core i3 3220; knowing this name, you can find detailed information about the processor (characteristics, reviews, etc.) and determine how suitable it is for your purposes.
Cores
The number of cores in a complete PC processor.
The core is a part of the processor designed to process one stream of commands (and sometimes more, for such cases, see "Number of threads"). Accordingly, the presence of several cores allows the processor to work simultaneously with several such threads, which has a positive effect on performance. However note that a larger number of cores does not always mean higher computing power — a lot depends on how the interaction between command streams is organized, what special technologies are implemented in the processor, etc. So, only chips of the same purpose (desktop, mobile) and similar series (see "Processor") can be compared by the number of cores.
In general, single-core processors are practically not found in modern PCs.
Mainly desktop chips of the initial and middle level are made dual-core.
Four cores are found both in desktop CPUs of the middle and advanced class, and in mobile solutions. And
six-core and
eight-core processors are typical for high-performance desktop processors used in
workstations and gaming systems.
Threads
The number of threads supported by the bundled PC processor.
A thread in this case is a sequence of instructions executed by the kernel. Initially, each individual core is able to work with only one such sequence. However, among modern CPUs, more and more often there are models in which the number of threads is twice the number of cores. This means that the processor uses multi-threading technology, and each core works with two instruction sequences: when pauses occur in one thread, the core switches to another, and vice versa. This allows you to significantly increase performance without increasing the clock frequency and heat dissipation, however, such CPUs are also more expensive than single-threaded counterparts.
Speed
The clock speed of the RAM that comes with the PC. This is one of the parameters that determine the capabilities of RAM: with the same amount and type of memory (see above), a higher clock frequency will mean faster performance. However such details are rarely required by an ordinary user, but they are important for enthusiasts and professionals.
Also note that this indicator can be used to determine the possibilities for upgrading the system: the motherboard will be able to work normally with brackets that have the same or lower clock frequency, but compatibility with faster memory should be specified separately.
Drive type
The type of storage device that is installed in the computer.
Note that many PCs allow you to add a complete drive or even completely replace it, but it is more convenient to buy a suitable configuration initially and not bother with re-equipment. In terms of types, traditional hard disk drives (
HDD) are increasingly losing ground to
SSD solid-state modules nowadays. In addition,
HDD + SSD combinations are quite popular (including those using advanced
Intel Optane and
Fusion Drive technologies). But solutions such as SSHD and eMMC have practically fallen into disuse. Let's take a closer look at these options:
— HDD. Classic hard disk. The key advantage of such drives is their low cost per unit of volume — this allows you to create capacious and at the same time inexpensive storage. On the other hand, HDDs are noticeably inferior to SSDs in terms of speed, and they also do not tolerate shocks and shocks. Thus, this type of media is less and less used in its pure form — it is much more common to find a combination of a hard drive with an SSD module (see below).
— SSD. Solid state drives based on flash memory. With the same volume, an SSD is much more expensive than an HDD, but this is justified by a number of advantages. First, such drives are much faster than hard drives; specif
...ic performance may be different (depending on the type of memory, connection interface, etc.), however, even inexpensive SSDs outperform advanced HDDs in this indicator. Secondly, solid-state memory has no moving parts, which offers several advantages at once: lightness, compactness, shock insensitivity and low power consumption. And the cost of such memory is constantly decreasing as technology advances. So more and more modern PCs are equipped with just such drives, and these can be configurations of any level — from low-cost to top ones.
— HDD+SSD. The presence in one system of two drives at once — HDD and SSD. Each of these varieties is described in more detail above; and their combination in one system allows you to combine the advantages and partially compensate for the shortcomings. For example, an SSD (which usually has a fairly small capacity) can store system files and other data for which speed of access is important (for example, work applications); and HDD is well suited for large volumes of information that do not require particularly high speed (a typical case is video files and other multimedia content). In addition, the solid-state module can be used not as a separate storage, but as an intermediate cache to speed up the hard drive; however, this usually requires special software settings (whereas the "two separate drives" mode is most often available by default).
We also emphasize that in this case we are talking about “ordinary” SSD modules that do not belong to the Optane and Fusion Drive series; the features of these series are detailed below.
HDD + Optane. Combination of a traditional hard drive with an Intel Optane series SSD. For more information about the general features of this combination, see "HDD + SSD" above. Here, we note that “optains” differ from other SSD drives in a special three-dimensional structure of memory cells (3D Xpoint technology). This allows you to access data at the level of individual cells and do without some additional operations, which speeds up the speed and reduces latency, and also has a positive effect on memory life. The second difference is that Optane is usually used not as a separate drive, but as an auxiliary buffer (cache) for the main hard drive, designed to increase speed. Both drives are perceived by the system as a single device. The disadvantage of this type of SSD is traditional — a rather high cost; it is also worth noting that its superiority is most noticeable at relatively low loads (although it does not disappear completely with increasing load).
— HDD + Fusion Drive. A kind of HDD + SSD bundle (see above), used exclusively in Apple computers and optimized for the proprietary macOS operating system. However, it would be more correct to compare this option with the “HDD + Optane” combination (also described above): for example, both drives are perceived by the system as a single unit, and the Fusion Drive module is also used as a high-speed cache for the hard drive. However, there are also significant differences. Firstly, Fusion Drive has significant volumes and is used not only as a service buffer, but also as part of a full-fledged drive — for permanent data storage. Secondly, the total volume of the entire bundle approximately corresponds to the sum of the volumes of both drives (minus a couple of "service" gigabytes). This type of drive is expensive, but the efficiency and convenience are well worth the price.
— SSHD. The so-called hybrid drive: a device that combines a hard drive and a small SSD cache in one case. Some time ago, this solution was quite popular, but now it is almost never found, having been supplanted by a more practical option — various types of HDD + SSD.
— eMMC. A type of solid-state memory originally developed for portable gadgets such as smartphones and tablets. It differs from SSD, on the one hand, in lower cost and low power consumption, on the other hand, in relatively low speed and reliability. Because of this, this type of drive is used extremely rarely — in particular, in single models of microcomputers and thin clients (see "Type").
— HDD + eMMC. Combination of hard disk drive (HDD) and eMMC solid state module. These types of drives are described in detail above; here we note that this option is extremely rare, and in rather specific devices — monoblocks (see "Type") with a transformer function, where the screen is a removable tablet that can be used autonomously. In such a tablet, an eMMC module is usually installed, and a hard drive is placed in the stationary part. However, another option is also possible — a bundle similar to HDD + SSD (see above), where eMMC is used to reduce cost and/or power consumption.
— SSD + eMMC. Another combination of the two types of drives described above. It was used in single monoblocks and nettops — mainly to reduce the cost; Today, this variant is almost non-existent.Drive capacity
The volume of the main drive supplied with the PC. For models with combined storages (for example, HDD+SSD, see "Drive type"), in this case, the main one is considered to be a more capacious hard drive; and if there are two HDDs in the kit, then they usually have the same capacity.
From a purely practical point of view, the more data the drive holds, the better. So the choice for this indicator rests mainly on the price: a larger capacity inevitably means a higher cost. In addition, we recall that SSD-modules in terms of gigabytes of capacity are much more expensive than hard drives; so you can only compare carriers of the same type by the combination of volume and cost.
As for the specific capacity, a volume of
250 GB or less in modern PCs can be found mainly among SSDs. Hard drives of this size are almost never found, for them a capacity
of 250 to 500 GB is still considered quite modest.
501 – 750 GB is a pretty good value for an SSD, and among them it is also mainly used.
751 GB — 1 TB is an impressive figure for an SSD and an average for hard drives,
1.5 – 2 TB is a very solid capacity even for an HDD. And a very high capacity —
more than 2 TB — paradoxically, is found even among pure SSDs: such drives are installed in high-end workstations, where speed
...is no less important than capacity.Connectors
In most desktop PCs, this assortment is determined both by connectors on the "motherboard" and on a discrete graphics card, among which
VGA,
DVI,
HDMI output(there are models where
HDMI 2 pcs),
HDMI input,
DisplayPort,
miniDisplayPort. More details about them.
— VGA. He's D-Sub. Analogue video output with maximum resolution up to 1280x1024 and no audio support. It is rarely installed in modern devices, but it can be useful for connecting certain models of projectors and TVs, as well as outdated video equipment.
— DVI. Modern PCs can be equipped with both pure digital DVI-D and hybrid DVI-I; the latter also allows analogue connection, including work with VGA-devices through an adapter, and in analogue format has a resolution of 1280x1024. In digital DVI, this parameter can reach 1920x1200 in single-link mode (single link) and 2560x1600 in dual-link mode. The presence of a dual-channel mode must be specified separately.
— HDMI output. Digital output originally designed for HD content — high-definition video and multi-channel audio. The HDMI interface is almost mandatory for modern HD multimedia technology, and it is also extremely popular in computer monitors — so the presence of such an output on a PC provides ve
...ry extensive features for connecting external screens and even high-end audio devices. Some devices may even have 2 HDMI outputs.
— HDMI input. Your PC has at least one HDMI input. See above for details on the interface itself; here we note that it is the inputs of this format that are found mainly in monoblocks (see "Type"). At a minimum, this allows you to use the monoblock's own display as a screen for another device (for example, as an external monitor for a laptop). However, there are other, more specific options for using the HDMI input — for example, recording an incoming video signal, or transferring (switching) it to one of the PC video outputs.
Both the HDMI inputs and outputs in modern PCs may correspond to different versions:
- v 1.4. The earliest standard widely used today. Supports resolutions up to 4096x2160 and frame rates up to 120 fps (however, only at a resolution of 1920x1080 or lower), and can also be used to transmit 3D video. In addition to the original version 1.4, you can find improved v 1.4a and v 1.4b — in both cases, the improvements affected mainly the work with 3D.
- v2.0. The standard, also known as HDMI UHD, was the first to introduce full support for UltraHD 4K, with frame rates up to 60 fps, as well as compatibility with a 21:9 aspect ratio. In addition, the number of simultaneously transmitted channels and audio streams has increased to 32 and 4, respectively. It is also worth noting that initially version 2.0 did not provide support for HDR, but it appeared in update v 2.0a; if this feature is important to you, it's ok to clarify which version 2.0 is provided in the PC, the original or the updated one.
- v2.0b. The second update of the above v 2.0. The main update was the expansion of HDR capabilities, in particular, support for two new formats.
- v2.1. It is also HDMI Ultra High Speed: the bandwidth has been increased to such an extent that it became possible to transfer 10K video at 120 fps (not to mention more modest resolutions) as well as work with extended colour schemes up to 16 bits. The latter may come in handy for some professional tasks. However, note that all the features of HDMI v 2.1 are available only when using cables designed for this standard.
— Display port. A digital media interface similar in many respects to HDMI, but mainly used in computer technology — in particular, it is widely used in Apple computers and monitors. One of the interesting features of this standard is the ability to work in the daisy chain format — connecting several screens to one port in series, transmitting its own signal to each of them (although this function is not technically available with all screens for this interface). DisplayPort is also on the market in several versions, the current ones are as follows:
- v 1.2. The earliest widely used version (2010). However, already in this version, 3D compatibility and the daisy chain mode appeared. The maximum fully supported resolution when connecting a single monitor is 5K (30 fps), transmission up to 8K is possible with certain restrictions; a frame rate of 60 Hz is supported up to a resolution of 3840x2160, and 120 Hz — up to 2560x1600. And when using daisy chain, you can connect up to 2 2560x1600 screens at 60 frames per second or up to 4 1920x1200 screens at the same time. In addition to the original version 1.2, there is an improved v 1.2a, the main innovation of which is support for AMD FreeSync, a technology for synchronizing the monitor's frame rate with the signal from an AMD graphics card.
- v 1.3. An update introduced in 2014. The increased bandwidth made it possible to provide full, without restrictions, support for 8K at 30 fps, as well as transmit 4K images at 120 fps, sufficient for 3D work. Resolutions in daisy chain mode have also increased — up to 4K (3840x2160) at 60 fps for two screens and 2560x1600 at the same frame rate for four. Of the specific innovations, it is worth mentioning the Dual Mode mode, which allows you to connect HDMI and DVI devices to such a connector through the simplest passive adapters.
- v 1.4. The newest version widely used in modern PCs. Formally, the maximum connection speed has not increased compared to the previous version, but thanks to signal optimization, it became possible to work with 4K and 5K resolutions at 240 fps and with 8K at 120 fps. However for this, the connected screen must support DSC encoding technology — otherwise, the available resolutions will not differ from version 1.3. In addition, v 1.4 added support for a number of special features, including HDR10, and the maximum number of simultaneously transmitted audio channels increased to 32.
— miniDisplayPort. A smaller version of the DisplayPort connector described above, may also correspond to different versions (see above). Note that the same hardware connector is used in the Thunderbolt interface versions 1 and 2, and the graphic part of this interface is based on DisplayPort. Therefore, even some Thunderbolt monitors can be directly connected to miniDisplayPort (although it is desirable to clarify this possibility separately).
— COM port (RS-232). Serial port, originally used to connect dial-up modems and some peripherals, in particular, mice. However, today this interface is used as a service interface in various devices — TVs, projectors, network equipment (routers and switches), etc. Connecting to a PC via RS-232 allows you to control the operation parameters of an external device from a computer.