hec Zephyr MX 750 750W Peak Output ATX12V V2.3 / EPS12V V2.91 SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Power Supply

Pros: I've already reviewed this product once but I just want to come back and share some more information. From what i can tell, rails one and two are dedicated just to the PCI cords on the supply. and to make things even easier on us, they nicely labeled which rail the connectors are attached to. this is to keep from overloading one rail, but i have a feeling some of you complaining about your PC shutting down don't realize this (because i didn't at first lol). i made my build with one radeon 3870 originally. worked fine. the card used one PCI 6 pin wire. recently i just added a 3870X2 card (yes, you can crossfire a X2 with a single GPU card). this 3870X2 required both a 6 and an 8 pin connector, so i grabbed the wires at random. come game time my PC shut down during crysis. upon inspection i realized that i was using all wires on rail 2. duh! so, i switched out the 8 pin for the one on rail 1. ...continue down...

Cons: this made it so that i had the two 6 pin connectors running off rail 2 and the 8 pin running off of rail one. i rebooted my computer and everything was fine, so i decided to put it under load and booted crysis back up. well, i just got done with a 2 hour session of crysis and my PC never flinched. now, i'm not saying this is everyone's problem, because DoAs happen, but this is definitively something that should be kept in mind when building your PC with this supply.

Overall Review: sometimes you think you know everything about what you're doing and you miss something like this.

Pros: A lot of connectors, you can power EVERYTHING. It appears COOL (nice color, nice blue led). Silent.

Cons: So... Having so many cables, modularity would be appreciated, but of course the price would increase. The worst is that when you buy a 750W PSU it is because you need to supply latest hardware... It was unable to work playing Crysis (DitrectX10) with two ATI HD4850 in CrossfireX, shutting down after some minutes (or seconds) of gaming. Thus, what it is for? Even doing multitasking on Vista Ultimate 64 it shuts down! When switched to a CoolerMaster RS700 no more problems... It is a HEC fault, be aware!

Overall Review: Newegg refunded all expenses. Newegg is the best on line hardware seller!
Ah, I had almost forgotten: by reading the answers of the HEC customer service in this site, I should have realized that they are unable to fix those issues. I think HEC is selling a PSU that is not compatible with today technologies.