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hotspot_102   02-06-2008 at 11:12:25 AM

nvidia lists that the 12 v rail needs 22 amps, i cant find a psu that offers 22 amps on the 12v.

any suggestions? or am i misunderstanding?

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tlmck   02-06-2008 at 11:31:41 AM
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Many PSU's list multiple +12v rails. When combined these generally are more than 22a depending on the PSU. Others have a single large +12v rail.

An example of a multi-rail that would work would be this. http://www.newegg.com/Product/Prod [...] 6817371007 To calculate the total +12v amps available you would divide the total +12v wattage by 12v. The remainder would be the total +12v amps. For this PSU that would be 34a. http://www.newegg.com/Product/Show [...] wer+Supply

An example of a large single +12v rail would be this at 33a. http://www.newegg.com/Product/Prod [...] 6817139003

If you were thinking of a dual card SLi setup, this would be more appropriate. http://www.newegg.com/Product/Prod [...] 6817341002

All three above would serve you well.

------------------------------ I know what I know, and I don't know what I don't know.
 Reply to tlmck
ohiou_grad_06   02-06-2008 at 07:26:43 PM
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Ironically, I have a PSu that came with case that claims 24A. so they are out there.

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rgeist554   02-06-2008 at 07:32:07 PM
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Ughnn, I got 60 Amps on mine. /flex

Anyways, 22 amps is the requirement for the entire system, not just the card. As others have stated, you can also combine rails to meet those requirements.

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geofelt   02-06-2008 at 09:10:31 PM
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The nvidia recommendations are for a system wide total of xx amps on the total 12v rails. 22a is only an approximate minimum.

The PC power & cooling silencer610 has 49 good amps on a single 12v rail. http://www.newegg.com/Product/Prod [...] 6817703005

it may be a bit of overkill, but it works fine in my system, and is quiet to boot.

Message quoted 1 times
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ZOldDude   02-06-2008 at 10:02:39 PM
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geofelt wrote :

The nvidia recommendations are for a system wide total of xx amps on the total 12v rails. 22a is only an approximate minimum.

The PC power & cooling silencer610 has 49 good amps on a single 12v rail. http://www.newegg.com/Product/Prod [...] 6817703005

it may be a bit of overkill, but it works fine in my system, and is quiet to boot.


If your on the Newegg email list you would have shaved another $10 USD off the price.
Newegg says your "saveing" $80 but PC Power & Cooling will sale dirrect for the same $119.

All PC P&C units are rated full -constant full load- rather than surge and at either 40C or 50C (for the Turbo's) air intake.
Best PSU's made and I get the same OC useing the same parts as others report but -without- haveing to raise any voltages.

------------------------------ *While we crash and burn, small, low tech, agrarian societies such as the Hmong in the mountains of Laos will continue on without so much as blinking an eye.*
 Reply to ZOldDude
geofelt   02-06-2008 at 10:58:30 PM
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@ZOldDude:
My newegg shows free delivery, I think PC P&C charges delivery.

What e-mail list are you referring to? Are you saying that some products are sold at different prices, depending on what list you are on? Am I missing something here?

Reply to geofelt
rgeist554   02-06-2008 at 11:27:25 PM
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You can get those promo codes from newegg for $5-15 off + free shiping, etc.

Reply to rgeist554
SirCrono   02-06-2008 at 11:42:38 PM
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I think the OP thougth the PSU had to have EXACTLY 22 amps on the 12v rails.

If that's the case, well no, 22 amps is the minimum.

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35% Done
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Reply to SirCrono
hotspot_102   02-07-2008 at 06:05:34 AM
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thanks for the help, this forum offer some great advice.

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