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".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.
Number of slots
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.
Max. memory support
The maximum amount of RAM that can be installed on a computer. It depends, in particular, on the type of memory modules used, as well as on the number of slots for them. Paying attention to this parameter makes sense, first of all, if the PC is bought with the expectation of upgrading RAM and the amount of actually installed memory in it is noticeably less than the maximum available
So the amount of maximum installed memory depends on the number of slots in the PC and can be from
16 GB(a modest PC) to
64 GB and above. The most popular on the market are
PCs with a maximum installed 32 GB of memory.
Graphics card model
The main manufacturers of video cards nowadays are
AMD,
NVIDIA and Intel, and each has its own specifics. NVIDIA produces primarily discrete solutions; Among the most common are
the GeForce MX1xx,
GeForce MX3xx,
GeForce GTX 10xx series (in particular
GTX 1050,
GTX 1050 Ti and
GTX 1060),
GeForce GTX 16xx,
GeForce RTX 20xx,
GeForce RTX 30xx(
GeForce RTX 3060,
GeForce RTX 3060 Ti,
GeForce RTX 3070,
GeForce RTX 3070 Ti,
GeForce RTX 3080,
GeForce RTX 3080 Ti, GeForce RTX 3090,
GeForce RTX 3090 Ti),
GeForce RTX 4060 , GeForce RTX 4060 Ti,
GeForce RTX 4070,
GeForce RTX 4070 SUPER,
GeForce RTX 4070 Ti,
GeForce RTX 4070 Ti SUPER,
Ge Force RTX 4080,
GeForce RTX 4080 SUPER,
GeForce RTX 4090 and separate
Quadro series. AMD offers both discrete and integrated graphics - including the popular
Radeon RX 500,
Radeon RX 5000,
Radeon RX 6000,
Radeon RX 7000 and
AMD Radeon Pro series. And Intel deals exclusively with modules integrated into processors of its own production - these can be HD Graphics, UHD Graphics and Iris.
Note that many configurations with discrete graphics also have an integrated graphics module; in such cases, the name of the discrete video card is indicated as more advanced.
Memory type
The type of graphics memory used by the discrete graphics card (see "Video Card Type").
In most of these adapters, GDDR graphics memory is installed — a kind of regular DDR "RAM", optimized for use with graphics tasks. This memory is available on the market in several versions; in addition, there are other varieties. Here is a more detailed description of the different options:
— GDDR3. At one time — a fairly common type of graphic memory; today, however, it is considered obsolete and is not used in new PCs.
— GDDR5. The most popular (for 2020) type of GDDR graphic memory. At a reasonable cost, it provides good performance, due to which it is found in computers of different price categories.
— GDDR5X. Modification of the above-mentioned GDDR5, characterized by a 2-fold increased throughput. Accordingly, the performance of such memory (with the same volumes) is noticeably higher; on the other hand, such modules are expensive.
— GDDR6. The newest of the GDDR standards for 2020 — the first video cards based on this type of memory were introduced in 2018. It differs from its immediate predecessor — GDDR5X — in both increased bandwidth and lower operating voltage, which provides both increased efficiency and reduced power consumption. It is also worth noting that GDDR6 was developed with specific applications in mind, such as VR or work with resolutions above 4K UHD.
— HBM2. The original HBM is a type of RAM d...esigned to maximize the speed of data exchange; HBM2 is the second version of this technology, in which the bandwidth compared to the original HBM has been doubled. Such a memory is fundamentally different from DDR in terms of device — in particular, the memory cells in it are placed in layers and allow simultaneous access. Thanks to this, HBM is several times faster than the fastest versions of GDDR, which makes this technology perfect for high workloads such as processing UltraHD graphics and virtual reality. At the same time, the clock frequency of such modules is low and, accordingly, power consumption and heat dissipation are small. The disadvantage of this option is traditional — the high price.
— DDR3. Memory that does not have a specialization for graphics — in other words, the same DDR3 that is used in RAM sticks (see "Memory Type" above). In the case of video cards, such solutions are completely obsolete and are almost never used nowadays.
NVMe
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.
M.2 connector
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.