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Vaerli

Jun 18 2008, 10:13 PM

Sterling14

Jun 19 2008, 08:32 AM

That power supply should be alright, but I think your really going to be close to it's limits. Remember as power supplies age, they start to lose some total wattage. I think the average might be about 10% per year of total wattage lost. If that number is right, in probably less then 2 years, that power supply might be having some trouble running SLI. I'd think if you could find at least a 600-watt power supply you should be alright, but 700-watt might be the best.

Vaerli

Jun 19 2008, 09:45 AM

Well, I'm trying to keep it as close to 1000$ as possible. That one is just a few dollars under, after the rebate code thing from here. :D

So, something like this would be much better then, right?

http://www.newegg.com/Product/Product.aspx...N82E16817104014

or this
http://www.newegg.com/Product/Product.aspx...N82E16817104018

of course, that brings it up 40$ or so.

Actually, I think this looks the best, and its fairly cheap.

http://www.newegg.com/Product/Product.aspx...N82E16817371001

dc3

Jun 19 2008, 09:59 AM

QUOTE(Sterling14 @ Jun 19 2008, 08:32 AM)

A PSU will not lose power over time, what happens is another thing entirely. The electrolytic capacitors break down in time, these are used to filter the AC voltage as it is being rectified to DC voltage. The PSU will not lose power, but the signal becomes "dirty" and will cause it's own brand of problems.

The recommended wattage for that GPU with two cards in SLI is between 400W - 450W.

Vaerli

Jun 19 2008, 10:52 AM

so, are you suggesting replacing power supplies after 3-4 years then?

I was pretty sure that some psus (mainly cheaper ones) lost like 4-5 watts of power for every degree celcius or whatever.

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