In extreme overclocking hardware necessary to maintain a special load. To obtain the record results overlock using liquid nitrogen cooling or even helium, and the power system has to cope with high power. In video cards EVGA GeForce GTX 1080 Classified, KFA2 GeForce GTX 1080 HOF and ASUS ROG Strix GeForce GTX 1080 we just get enhanced power system. Including the increased number of phases – in their EVGA used 14 + 3, and at KFA2 – 12 + 3.
But this amount is not enough. The load of several hundred amperes on the lines is too extreme even for overclocking graphics cards. Therefore, many overclockers develop their own boards for external power supply cards. For example, Andy Bock from BenchBro team has in 2011 developed the corresponding project Resurrection of the Zombie. At that time it did not go speech about the 14 + 3 phase, but the project requirements were appropriate:
“The goal of this project is to supply a universal system of cards. Often during extreme overclocking with liquid nitrogen, the bottleneck is the power subsystem. In the video nominally set all 2-8 power phases. And under these extreme conditions is not enough. This restriction is well emphasized by the same graphics Lightning from MSI with 12-phase power system, which can achieve a much higher clock speeds. And now the power of the power subsystem HD5870 Lightning graphics card is available for all. ”
ASUS also unveiled external power subsystem, as well as some other manufacturers in late 2014. Now they were joined and EVGA. Fee Epower gen V was developed by “the court” overclockers EVGA Kingpin and TIN. The board is equipped with additional phases of the power subsystem and is connected to the video card. It uses thick cables that can withstand considerable power because EPower gen V can provide a current up to 600 A. For a stable power supply available 14 phases. VRM cooled by a passive heatsink. On the board itself is powered by three 6-pin connectors, ie theoretically Epower gen V can receive up to 225 watts from the power supply.
The maximum current of 600 A is distributed through 12 phases of stress (12x 50 A) with a maximum of 2 V. In the memory chips (VMEM) can be supplied to more than 90 A. For EVGA Epower gen V recommended a good power supply with a power line 12 in the Class of 1200 up to 1,500 watts.
Except for the power subsystem on the board there are several fan connectors and an external module EVBot, but it is also possible to direct control through EVGA graphics cards. The board has a number of 7-segment displays and buttons through which you can make the settings directly (for example, change the voltage). The PCB are several points of the direct measurement of voltage, paved paths designed for high current.
EVGA EPower gen V will soon be available on the website www.evga.com. The price is still unknown. Details will soon be published in the forum thread EVGA.