Plan to run GTX970 SLI, thoughts in current PSU.

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jay2tall

jay2tall

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Apr 9, 2007
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I am currently running the system in my signature. I've had my existing PC Power and Cooling 750w PSU for many years and has never failed me. It was designed to run 8800GTX SLI back in the day, but being it is older I have slight concerns with running more than one card. Any thoughts on this to put my concerns at ease? I know some components degrade over time, but I believe 970s in SLI suggest 700W, though I don't believe that is a confirmed requirement from NVIDIA.

This is my PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817341011

I am looking to purchase (2) ASUS GTX970 STRIX cards. Whenever the heck they are in stock.
 
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Alex Kelly


I took AGES to decide between the ASUS and MSI, went for the MSI in the end for the same reasons you did. I'm using a 750W PSU too, and I plan to SLI in the future. I think you'll be fine. :)
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jay2tall

jay2tall

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Apr 9, 2007
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I take that back, I am going to be rocking 2 MSI GAming 4G GTX970's. After much review I settled on these because they use better power on the VRAM, where as the ASUS used the stock setup. Both the Asus and MSI use 6 phase VRM's on the GPU. It also uses a 6pin + 8pin setup where ASUS uses only and 8 pin and seems that it may effect the max GPU boost speed. They should be here 10/1. Hopefully the 750 holds up, but its a 60A rail.
 
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sportsfanboy

sportsfanboy

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Mar 16, 2008
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I believe I read a thing, that a guru had an overclocked 970, and the whole system draw under load was somewhere around 300ish watts. That was with a normal gaming setup, with an overclocked i7 and so on. GTX 780ti's use roughly 250w per unit, and I know the gtx 970 uses far less than that.

I would have to guess, that a 970 sli rig with an i7 overclocked, and normal amounts of peripherals, should pull somewhere in the neighborhood of 650 watts during heavy gaming.

Not a ton of headroom, but unless you plan to game 12 hours a day, the psu should handle it just fine IMO
 
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Alex Kelly

Alex Kelly

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Oct 12, 2013
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I took AGES to decide between the ASUS and MSI, went for the MSI in the end for the same reasons you did. I'm using a 750W PSU too, and I plan to SLI in the future. I think you'll be fine. :)
 
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