Power phases
The number of processor power phases provided on the motherboard.
Very simplistically, phases can be described as electronic blocks of a special design, through which power is supplied to the processor. The task of such blocks is to optimize this power, in particular, to minimize power surges when the load on the processor changes. In general, the more phases, the lower the load on each of them, the more stable the power supply and the more durable the electronics of the board. And the more powerful the CPU and the more cores it has, the more phases it needs; this number increases even more if the processor is planned to be overclocked. For example, for a conventional quad-core chip, only four phases are often enough, and for an overclocked one, at least eight may be needed. It is because of this that powerful processors can have problems when used on inexpensive low-phase motherboards.
Detailed recommendations on choosing the number of phases for specific CPU series and models can be found in special sources (including the documentation for CPU itself). Here we note that with numerous phases on the motherboard (more than 8), some of them can be virtual. To do this, real electronic blocks are supplemented with doublers or even triplers, which, formally, increases the number of phases: for example, 12 claimed phases can represent 6 physical blocks with doublers. However, virtual phases are much inferior to real ones in terms of capabilities — in fact, t...hey are just additions that slightly improve the characteristics of real phases. So, let's say, in our example, it is more correct to speak not about twelve, but only about six (though improved) phases. These nuances must be specified when choosing a motherboard.
Max. clock frequency
The maximum RAM clock speed supported by the motherboard. The actual clock frequency of the installed RAM modules should not exceed this indicator — otherwise, malfunctions are possible, and the capabilities of the “RAM” cannot be used to the fullest.
For modern PCs, a RAM frequency of
1500 – 2000 MHz or
less is considered very low,
2000 – 2500 MHz is modest,
2500 – 3000 MHz is average,
3000 – 3500 MHz is above average, and the most advanced boards can support frequencies of
3500 – 4000 MHz and even
more than 4000 MHz.
TPM connector
Specialized
TPM connector for connecting the encryption module.
TPM (Trusted Platform Module) allows you to encrypt the data stored on your computer using a unique key that is practically unbreakable (it is extremely difficult to do this). The keys are stored in the module itself and are not accessible from the outside, and data can be protected in such a way that their normal decryption is possible only on the same computer where they were encrypted (and with the same software). Thus, if information is illegally copied, an attacker will not be able to access it, even if the original TPM module with encryption keys is stolen: TPM will recognize the system change and will not allow decryption.
Technically, encryption modules can be built directly into motherboards, but it is still more justified to make them separate devices: it is more convenient for the user to purchase a TPM if necessary, and not overpay for an initially built-in function that may not be needed. Because of this, there are motherboards
without a TPM connector at all.
Thunderbolt AIC connector
5-pin connector that allows you to connect an expansion card. It, in turn, provides high-speed data exchange (up to 40 Gbps), the ability to connect external monitors, high-speed charging of compatible devices, etc.
RGB LED strip
Connector for connecting a decorative LED strip and other devices with LED indication. Allows you to control the backlight of the case through the motherboard and customize the glow for your tasks, including synchronize it with other components.
CPU power
The type of connector for powering the processor installed on the motherboard.
Most modern boards use a
4-pin connector, and most power supplies in ATX cases are also designed for it. In addition, there are other types of power connectors, they all have an even number of pins — 2, 6 or 8. Two-pin
power is used mainly in motherboards of miniature form factors like thin mini-ITX, designed for low-power processors.
8-pin connectors, on the contrary, are designed to power the most powerful modern processors. It is believed that such a connector provides a more stable power supply and more precise tuning of its parameters. But connectors for 6 pins are not found separately, they usually complement 8-pin connectors in high-performance motherboards, in particular, gaming ones.
Also note that some boards have 2 or even 3 power connectors — most often in the format
8 + 4,
8 + 8 and
8 + 8 + 6 pins. This functionality is designed for high-end CPUs with high power and power consumption, for which one connector is not enough. There is another specific option — “motherboards”
without a separate processor power supply : these are models equipped with an integrated CPU, which receives energy through its own board circuits without a sp
...ecial power connector.Fan power connectors
The number of connectors for powering coolers and fans provided in the motherboard. A processor cooler is usually connected to such a connector, and fans of other system components — video cards, cases, etc. can also be powered from the "motherboard"; sometimes it is more convenient than pulling power directly from the PSU (at least you can reduce the number of wires in the case). Many modern boards are equipped with
4 or more connectors of this type.
CPU Fan 4-pin
A four-pin connector used to connect a processor cooling fan. The first contact in it corresponds to the black wire of the cooler — it is the "ground" or minus of the power supply. The second contact is the plus of the power supply (yellow or red cooler wire). The third one is involved in measuring the rotation speed of the impeller (green or yellow fan wire). The fourth pin, corresponding to the blue wire, receives control signals from the PWM controller to adjust the cooler rotation speed depending on the temperature of the processor.
CPU/Water Pump Fan 4-pin
A four-pin connector for connecting a water cooling pump fan. It can also be used to turn on an additional CPU cooler.
