PSU question regarding Amperage needs for Nvidia GF 7900

October 12th, 2006, 02:25 AM

Question,

I noticed the reqs for the new 7900s is a required 20-22 amps on the 12v rail. So to determine if my PSU meets the requirement do I simply look at the Tech Specs?

For example my Antec 430W TruePower 2.0 puts out 17 amps on the 12v rail. Is the calculation that simple? Or am I missing something- I've built plenty of PCs before, and always made sure I had enough wattage, but this is the first time I've run into Amperage reqs for a specific component.

So, if the answer to the above is yes, does anyone have a recommendation. I'm looking for a single card solution- not crossfire or SLI.

I'd love to get by without a new PSU, but I'm not about to upgrade into stability issues.

Could someone let me know?

Thanks,

Al

**Regeneration** · October 12th, 2006, 02:28 AM

The Antec TruePower II is using two rails for the 12v rail, so that means 12v1+12v2 = total amps.

October 12th, 2006, 02:32 AM

So in other words, 32-34 amps, and we're ok. Very good to know. Just curious- any opinion on whether I should upgrade anyway? The PSU that is. And thanks for the quick feedback, much appreciated.

JA

**Regeneration** · October 12th, 2006, 03:54 AM

430w is pretty fine at this point.

October 12th, 2006, 05:25 AM

Thanks for the replies. Much appreciated.

JA