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PSU problems

A

atkane

Junior Member
So I'm building a new PC, and I ran into this problem:

My GPU (ATI Radeon X700 Pro) requires that it be hooked up to a 300W PSU. The case I am getting is a Shuttle, and the included PSU is 220W (PFC). I have looked for a 300W+ PSU that fits the dimensions for the case (82mm x 43mm x 190mm WxHxD), but the best I found was a Shuttle 250W PFC.

Since PSU's with PFC run about 95% whereas PSU's without PFC run around 70%, I figure:
220W * .95 = 209W as opposed to 300W * .70 = 210W

So do you think my GPU would run on a 220W PFC? 250w PFC? Or should I start looking at external 300W+ PSU and/or a different case?

Any help is much appreciated.
 
Originally posted by: atkane
So I'm building a new PC, and I ran into this problem:

My GPU (ATI Radeon X700 Pro) requires that it be hooked up to a 300W PSU. The case I am getting is a Shuttle, and the included PSU is 220W (PFC). I have looked for a 300W+ PSU that fits the dimensions for the case (82mm x 43mm x 190mm WxHxD), but the best I found was a Shuttle 250W PFC.

Since PSU's with PFC run about 95% whereas PSU's without PFC run around 70%, I figure:
220W * .95 = 209W as opposed to 300W * .70 = 210W

So do you think my GPU would run on a 220W PFC? 250w PFC? Or should I start looking at external 300W+ PSU and/or a different case?

Any help is much appreciated.
Click to expand...


That is a really good PSU and you shouldn't have a problem. People have been able to put a lot of load on those PSUs, the ratings are a bit confusing but trust me, you will be ok.
 
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