Comparison Gamemax VP Gamer VP-600 vs Gamemax Eco Gamer GE-600

Efficiency, in this case — the ratio of the power of the power supply (see "Power") to its power consumption. The higher the efficiency, the more efficient the power supply, the less energy it consumes from the network at the same output power, and the cheaper it is to operate. Efficiency may differ depending on the load; the characteristics can indicate both the minimum efficiency and its value at an average load (50%).

It should be noted that compliance with one or another level of 80PLUS efficiency directly depends on this indicator (for more details, see "Certificate").

The maximum values of current and power that the PSU can provide on individual power lines.

The power line can be simply described as a pair of contacts for connecting a particular load; one of these contacts is “ground” (with zero voltage), and the second has a certain voltage with a plus or minus sign, this voltage corresponds to the voltage of the power line. In this paragraph, it is + 3.3V (such power is present in 20- and 24-pin connectors for motherboards, in SATA power connectors and some other types of connectors).

In general, power and currents are rather specific parameters that the average user rarely needs — mainly when connecting high-power components such as video cards, as well as when starting a PSU without a computer to power other electronics (for example, amateur radio stations). It is also worth mentioning that the sum of the maximum powers on all lines can be higher than the total output power of the PSU — this means that all lines cannot operate at full power at the same time. Accordingly, when the PSU is fully loaded, some of them will produce less power than the maximum possible.

The maximum current that the PSU is capable of issuing + 5V to the power line. For more information about power lines in general, see "+3.3V". Also note here that + 5V power, in addition to connectors for motherboards (for 20 and 24 pins), is also found in Molex and SATA plugs, as well as some other specific types of connectors.

The maximum current the PSU can deliver on the first +12V power line.

For more information on power lines in general, see the "+3.3V" section. Here, it is worth mentioning that 12V is the most popular voltage among computer power connectors. It is used in almost all such connectors (with few exceptions), and some plugs (for example, additional PCI-E power with 6 or 8 connectors) use only 12-volt lines — specifically in the +12V format. The division of +12V power into several separate lines is done for safety reasons — to reduce the current going through each individual wire and thus prevent excessive load and overheating of the wiring. However, some manufacturers do not specify the maximum current for individual +12V lines and provide only the overall value in the specifications; in such cases, this number is indicated in this section.

The maximum current that the PSU is capable of issuing to the power line is -12V.

For more information about power lines in general, see "+3.3V". Here it is worth mentioning that 12 V is the most popular voltage among computer power connectors. However, most often it is used in the + 12V format; and the -12V line performs mainly a service function, it is almost never found in other connectors, except for the motherboard power plug (for 20 or 24 pins).

The maximum current that the PSU is capable of issuing + 5Vsb to the power line.

For more information about power lines in general, see "+3.3V". Specifically, the + 5Vsb line is used to power the computer electronics in standby mode, when the main and only task of the system is to respond to pressing the power button. This does not require high power, so this figure rarely exceeds 3A.

The maximum power that the PSU can deliver to the +12V power rail.

For more details on power rails in general, see "Maximum current and power." Here, it should be noted that 12V is the most popular voltage among computer power connectors. It is used in nearly all such connectors (with few exceptions), and some plugs (such as the additional PCI-E power for 6 or 8 connectors) use only 12-volt rails, specifically in the +12V format. Therefore, this indicator is one of the most important characteristics of any PSU.

It is worth noting that many PSUs have multiple separate +12V power rails. In such cases, the total power is indicated here, which is usually divided equally among the rails.

The maximum power that the PSU is capable of delivering on the + 3.3V and + 5V power lines.

See "Maximum current and power" for details on power lines in general. Here we note that the power lines + 3.3V and + 5V are used both in the general connector for the motherboard (for 20 or 24 pins), and in specialized plugs — in particular, the SATA power connector (both) and Molex (only +5V, in addition to +12V). The power of these lines is a rather specific parameter, rarely required in fact; it is usually the same for both voltages, so it is indicated in the general clause.

The maximum power that the PSU is capable of delivering to the power line is -12V.

See "Maximum current and power" for details on power lines in general. Here we note that -12V is a rather specific format used exclusively in power plugs for motherboards — to supply power to individual motherboard components that require reverse polarity.