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Deane F
10-08-2007, 09:50 AM
If I have an Enermax 600w PSU with two 12v rails each rated for 22A (which happily runs a N7900GT card) does that mean that a single card can draw the combined total of the two rails - ie: 44A ?

I'm thinking about getting a 8800GTX in a few months and apparently they need at least 30A. And I don't really want to have to replace the power supply again.

wratterus
10-08-2007, 09:58 AM
Thats correct, it's the combined amperage that matters. That PSU will run an 8800gtx without breaking a sweat :D

Deane F
10-08-2007, 10:02 AM
Sweet!

The_End_Of_Reality
10-08-2007, 10:31 AM
I am running a madly overclocked 8800GTS 640MB on an Enermax Whisper II 535W so that will have no issues running a GTX.

But personaly I would not spend all that money on a GTX at this stage, get a GTS and once the next nVidia series is out (should be Novemberish) the prices of the 8 series will drop and the 9 series will be a lot faster... the 9800GTX is said to be twice as fast as the currect 8800 Ultra...

Pete O'Neil
10-08-2007, 01:02 PM
Thats correct, it's the combined amperage that matters. That PSU will run an 8800gtx without breaking a sweat :D
Thats incorrect! It actually depends on the PSU, any decent PSU manufacturer will quote the maximum current that can be draw over all the 12v rails. Very few PSU's can actually max out all 12v rails simultaneously. Deane F if you look on the Enermex website it will say what the maximum load you can draw over the 12v rail.