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The result shown by the PC processor in the test (benchmark) Passmark CPU Mark.

Passmark CPU Mark is a comprehensive test that allows you to evaluate CPU performance in various modes and with a different number of processed threads. The results are displayed in points; the more points, the higher the overall performance of the processor. For comparison: as of 2020, in low-cost solutions, the results are measured in hundreds of points, in mid-range models they range from 800 – 900 to more than 6,000 points, and individual top-end chips are capable of showing 40,000 points or more.

The number of slots for RAM modules provided on the PC motherboard. In this case, we are talking about slots for removable strips; for a PC with built-in memory, this parameter is irrelevant.

The slots available on the "motherboard" can be occupied all, partially or not occupied at all (in models without RAM). Anyway, you should pay attention to their number if the initially installed amount of RAM does not suit you (or ceases to suit you over time), and you plan to upgrade the system. The smallest amount found in a PC with removable memory is 1 slot ; if it is busy, you will only have to change the bar when upgrading. More connectors for RAM are always paired, this is due to a number of technical nuances; most often this number is 2 or 4, but it can be large — up to 16 in powerful workstations.

Note that when planning an upgrade, you need to take into account not only the number of slots and type of memory (see above), but also the characteristics of the motherboard. All modern "motherboards" have restrictions on the maximum amount of RAM; as a result, for example, the presence of two DDR4 slots does not mean that two strips of maximum capacity can be installed in the system at once, 128 GB each.

The result shown by the PC graphics card in the test (benchmark) Passmark G3D Mark.

Passmark G3D Mark is a comprehensive test to check the performance of a graphics card in various modes. Traditionally for such tests results are displayed in points, more points mean (proportionately) higher computing power. However, note that the graphics card is tested in different modes, and the final score is derived based on several results in specialized tests. Therefore, adapters with a similar overall result may differ slightly in actual performance in certain specific formats of operation. So if a PC is purchased for professional work with graphics, and high efficiency in some specialized tasks is critical, it will not hurt to clarify these nuances separately.

Note that with the help of Passmark G3D Mark, nowadays, all types of graphics adapters are tested (see "Graphics card type"). At the same time, for integrated solutions, a result of more than 1200 points is considered very good, and in discrete models this figure can vary from 2200 – 2300 points to 20,000 points or more.

PC motherboard support for NVMe technology.

NVMe is a standard specifically designed for connecting SSD drives via the PCI-E bus. Most often it is used when installed in the M.2 connector, but it can also be used with other interfaces. This standard initially takes into account the features of solid-state memory, allowing you to maximize its capabilities. So the presence of NVMe is mandatory if you plan to use the fastest SSD modules in the system. Such modules may or may not be included in the delivery package, this point will not hurt to clarify separately; and the need for them arises in resource-intensive tasks, in particular, demanding modern games.

The presence of at least one M.2 connector on the computer motherboard.

Technically, this is a small slot for compact components and expansion cards, which allows you to use two connection interfaces at once — SATA and PCI-E; most often, both are supported in this connector at once, but this point needs to be specified separately. One of the most popular ways to use M.2 is to connect high-speed SSD drives running over PCI-E: this interface allows you to fully use the capabilities of solid-state memory, while a SATA connection often lacks bandwidth. In addition, expansion boards are also available for M.2 — in particular, Wi-Fi and Bluetooth wireless adapters.

Note that in the standard configuration of the PC, this connector can be either free or busy — this should be specified separately.

The number of internal 3.5" component bays in the computer. This form factor is standard for hard drives, and is also often used in other types of drives; accordingly, the more bays, the more drives you can install on your computer.

Paying attention to the number of internal 3.5" bays makes sense, first of all, if you purchase a configuration without drives or plan to upgrade your PC in the future. It is worth noting that it is recommended to install drives not in a row, but through one slot — for cooling efficiency ; so ideally the number of slots should be twice the number of devices to be installed.

The number of internal bays in the computer for components of the form factor 2.5 ". This form factor is popular, in particular, among SSD drives, as well as compact ("laptop") hard drives.

Paying attention to the number of internal 2.5" bays makes sense, first of all, if you purchase a configuration without drives or plan to upgrade your PC in the future. It is worth noting that it is recommended to install drives not in a row, but through one slot — for cooling efficiency; so that ideally the number of slots should be twice the number of devices installed.

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 outpu...t on a PC provides very 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.

The number of PS/2 connectors provided on the back of the PC.

PS/2 (colloquially "pi-es in half") is a specialized connector with a characteristic round shape, used exclusively for keyboards and mice. Due to the advent of more advanced interfaces (USB 3.2, Thunderbolt, etc.), it is considered obsolete, but it is still found in certain PC models. This is due, in part, to the fact that the use of PS/2 peripherals allows you to free up more advanced ports that may be required for more demanding devices.

As for the quantity, PS/2 connectors are used for a maximum of two — one for the keyboard, the second for the mouse. There are configurations with one such socket — in such cases it is usually made combined and allows the connection of both types of peripherals, to choose from. However, it's ok to clarify these details separately.