In this article we've been comparing two top notch products both capable of producing up to 700~750 Watt quality power for your PC. Efficiency in between 20 and 100% load is guaranteed to be at least 80+ Gold, in our test we saw average efficiency of around 90%! At high loads output voltage is stable and well within ATX specifications while the sound noise level remains relatively silent.

When we look more into detail we do notice some differences between the two competitors. In both connectivity and cable length the Corsair AX750 is a bit more luxurious than the Coolermaster Silent Pro Gold 700. The latter comes with only 4 molex connectors to connect your peripherals with, and while molex is less used now with SATA being more of a standard, 4 connectors is not a lot much for a high-end product. Remember these PSU's are modular so if the user doesn't need them they could easily put it out of their way by just disconnecting the modular power cord. High-end users tend to be very creative with hooking up all kinds of periphery... Aside of this we also found the Corsair unit to produce less AC output ripple, less AC inrush current and little less sound noise. In contrary, Coolermaster's Silent Pro Gold offers little extra cooling power for your PC internals.

Standby power consumption is good and conform with new EU2012 standby power regulations for both units. In order to maintain a good power factor, Active PFC is being used and this seems to work quite well, only at low load levels it gets harder for both units to stay near the perfect PF of '1'. Safety wise they both did survive our short circuit test, if however you're being given the very special talent to kill your computer hardware in a very short period of time, do know Coolermaster gives a warranty period of 5 years where Corsair even extends this up to 7 years! Some trust they have...

At the time of writing we found the Corsair Professional Series Gold AX750 to be priced €138 where the Coolermaster Silent Pro Gold 700W goes for €110. At these price rating you'll probable find higher rated products but do know they come with lower efficiency and probable are less silent too. At €138 the AX750 might be a little overpriced compared with Coolermaster's unit, but in return you do get more luxury and little less extra performance on a electrical point of view.

Before I let you go I'd like to thank Coolermaster for having us over once again and for supplying us their review sample, I'd also like to thank Corsair for sending us their reviewing sample of the AX750 power supply. I hope you liked reading this article, until next time!