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22a on 12V rail required for 7900GTX??

V

Veraxitas

Member
I was reading an article in PC magazine about the 7900GTX and it said that in order to run the card your PSU should run at least 22amps on the 12v rail. Well, I am wondering if my PSU is sufficient for my 7900GTX b/c I keep freezing up in games. I am using an Antec NEO 500. According to the specs for this PSU on Antecs website it has 3, 12v rails each running 17a. Does this mean that its not enough for my 7900GTX? I looked at some other PSUS on newegg and found a Silverstone running 48a on a single rail and a PC Power and Cooling running 38a on single rail. Is having 3 or 4 rails combined just as good as 1 rail with a lot of amps? I am not running multiple hard drives or SLI just a single 7900GTX on a Gigabyte 965P DS3, so is this NEO with 3, 17a rails ok, or should I get one that has more amps per rail? Thx
 
Hmm...I remember a thread about power consumption somwhere around in the video section...lemme try to search for it!
 
22A for the entire system maybe, but no single card can draw that much power without bursting into flames.

22A is 264 watts fyi.
 
Your PSU should be fine.

As was mentioned, 22A is total amperes, not per rail.
 
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