Please do not get either one Coolmax or Diablotek.
They can't deliver the power that it says on the box, not even close.
An Antec Earthwatts 430 can put out more juice than a Coolmax or Diablotek 800.
I am begging you, don't get the Coolmax or the Diablotek.
There is a reason Chrysler doesn't put Dodge Neon engines into their Dodge Vipers.
- Edit - Review showing the Coolmax 750 failing when the reviewer tried to get 500 out of it http://www.hardwaresecrets.com/article/Coolmax-CUL-750B-750-W-Power-Supply-Review/977/7
One try of 500 and the PSU was blown for good, couldn't turn it back on.
The best efficiency from the device was below 200w.
Seriously, just don't plz god.