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Psu good enough for SLI?

Last response: in Components
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June 7, 2009 11:14:58 PM

Hey guys, this is my first post and I joined specifically to ask this question. Would the psu that I have already http://www.newegg.com/Product/Product.aspx?Item=N82E168..., would I be able to run two 9800gtxs in SLI? I was told that it did not have the right power connectors but I wanted a second opinion.

More about : psu good sli

a b ) Power supply
June 7, 2009 11:22:21 PM

I reckon you will be ok, you may have to use molex to 6 pin adapters but thats not a major issue. Power and wattage should be OK.
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a b ) Power supply
June 8, 2009 12:16:37 AM

I don't think you'll have enough power, only 18A per 12V rail.
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a b ) Power supply
June 8, 2009 10:08:15 PM

Mousemonkey said:
My friend is running a pair of 8800GT's on one of those and has been for the last year or so with zero problems.
http://www.anandtech.com/printarticle.aspx?i=3413


According to that chart, 9800GTX is 10A at load. My math says that 2x10 > 18, and that's not taking drives into account.
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June 8, 2009 10:17:19 PM

hopefully he could put one on one rail and the other on the other rail (it has 2x18A rails)
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June 8, 2009 11:34:45 PM

IMO it would just be safer if he upgraded his PSU too. CM isn't a good brand for PSUs
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June 9, 2009 2:02:52 AM

theAnimal said:
According to that chart, 9800GTX is 10A at load. My math says that 2x10 > 18, and that's not taking drives into account.


What about the second rail? Couldnt I use that?
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June 9, 2009 2:53:27 AM

Evga only recommends 30a total on the 12v rails and from what I see I have 36(2x18) so i'm thinking I should be alright...
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a b ) Power supply
June 9, 2009 3:25:01 AM

goleafsguy said:
Evga only recommends 30a total on the 12v rails and from what I see I have 36(2x18) so i'm thinking I should be alright...


The rails are generally not additive.
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a b ) Power supply
June 9, 2009 3:26:06 AM

goleafsguy said:
What about the second rail? Couldnt I use that?


No. The PCIe and Molex should all be on one rail if there are only 2.
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June 9, 2009 3:58:37 AM

How exactly can I find out if they are seperate? I shut off the power and checked inside but I couldnt really figure anything out from it.
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