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Old 05-25-2009, 11:41 PM   #1 (permalink)
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Default PSU Specs help when considering graphics card


I am a building PC for someone and am getting this graphics card ( Nvidia Geforce 260 GTX Core 216 ) for it but am trying to pick out a suitible PSU for it, and I think I found one, but I need help on a certain spec I am trying to understand. My rig has the Nvidia Geforce 260 GTX and this PSU so I hope that it was a good pick indeed .

Heres the Graphics Card - EVGA 896-P3-1265-AR GeForce GTX 260 Core 216 896MB 448-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Desktop Graphics / Video Cards

Here is the PSU - Rosewill RP600V2-S-SL 600W ATX12V v2.01 SLI Ready Power Supply - Power Supplies

On the video card it says...
(Minimum recommended power supply with +12 Volt current rating of 36 Amp Amps.)

But I am wondering how do I confirm that this PSU gives the needed amount of Amps for sure.

On the PSU specs in the above link, if I am not mistaken, where it states the output as seen here...
Output +3.3@30A,+5V@55A,+12V1@19A,+12V2@19A,-12V@1A,+5V SB@2.5A

Seeing +12V2@19A

Does this mean that I take 19A + 19A = 38 Amps and since that exceeds of the needed 36 Amps at 12 volts stated for the video card, is that good enough?


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Old 05-26-2009, 12:30 AM   #2 (permalink)
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Default Re: PSU Specs help when considering graphics card

You are correct, that is how you determine the amps of a psu. Some PSUs have more than one +12v rail and some (the best ones) have 1 big +12v rail.

Rosewill is decent but I would go for one of these. - PC Power & Cooling S61EPS 610W Continuous @ 40°C EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply compatible with core i7 - Power Supplies - 49 amps on the +12v rail!'

or - CORSAIR CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply - Power Supplies - 52 amps on the +12v rail!

PC power & cooling is the best brand but Corsair is right behind them.

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Old 05-26-2009, 12:32 PM   #3 (permalink)
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Default Re: PSU Specs help when considering graphics card

Corsair FTW!!!

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Old 05-26-2009, 05:33 PM   #4 (permalink)
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Default Re: PSU Specs help when considering graphics card

I agree, I would leave the Rosewill on the shelf for someone else
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