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Which power supply for GTX 480's in 3-way SLI?

post #1 of 44
Thread Starter 
Hey guys, So I'm looking to upgrade my PSU for my rig, and I'm trying to decide which PSU I should get.

As the title says, I will be putting 3x 480's in there, and I'll be using the rest of the hardware below in my sig.

I WANT to overclock my CPU to at least 4.0GHz, if not higher when I get my H100, and I would like to OC my 480's, even if just a little.

Which PSU would be best for my build with overclocks? I've been looking at these two, and I have $200 max to spend. Ideally I want to spend $180ish. I'm up for other suggested PSU's that aren't these two, as well. But I would prefer them to have at least 4x-6+2pin pcie so if I want to do two cards later down the road that require 2x8pins I can.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817814019

and

http://www.newegg.com/Product/Product.aspx?Item=N82E16817171056

Thanks guys, and let me know! - Jessekin32
Edited by Jessekin32 - 2/23/12 at 9:45pm
post #2 of 44
You're going to need more than 1000w; that's for sure. I put my system (sig rig w/ OC 480's) on a watt meter, and while running prime simultaneously with furmark I was at 870w... honestly I would do something closer to 1200w just to be safe.
post #3 of 44
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139014

you might need more than one though tongue.gif

BTW, don't worry about needing more than 1200W if you go with the AX1200. The PSU internals are 100% identical to a 1500W Thermaltake but Corsair decided to rate it a 1200W to get the 80Plus Gold rating
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Kalki
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post #4 of 44
Don't get the ABS.
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post #5 of 44
Thread Starter 
Quote:
Originally Posted by Usario View Post

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139014
you might need more than one though tongue.gif
BTW, don't worry about needing more than 1200W if you go with the AX1200. The PSU internals are 100% identical to a 1500W Thermaltake but Corsair decided to rate it a 1200W to get the 80Plus Gold rating

That's a lot more than I can spend frown.gif

After watching this video, you would think that I wouldn't need something that much bigger. I don't have to OC the GPU's, and odds are I won't because I dont want to have to manually adjust fans and have them loud loud loud. If I just OC'd my CPU to maybe 4.4GHz max, would I still need something bigger than A 1000w?

Edit:* Video: http://www.youtube.com/watch?v=R7jtEg3RcDA
Edited by Jessekin32 - 2/23/12 at 9:56pm
post #6 of 44
Quote:
Originally Posted by Jessekin32 View Post

That's a lot more than I can spend frown.gif
After watching this video, you would think that I wouldn't need something that much bigger. I don't have to OC the GPU's, and odds are I won't because I dont want to have to manually adjust fans and have them loud loud loud. If I just OC'd my CPU to maybe 4.4GHz max, would I still need something bigger than A 1000w?

No.

Click the link in my signature. 3 480's pulled more than 1000W. There were heavily overclocked with high voltages. That is what kills the power consumption. If you keep stock voltage, you will be more than fine.

And running furmark and prime is dumb. Gaming with not reach that. When gaming with stock volts, you should be below 900W and I am very close to say in the 800W range max.

Hope this helps.
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Liquid
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3930k ASUS Rampage IV Gene EVGA GTX480 @ 900MHz @ 1.1V EVGA GTX480 @ 900MHz @ 1.1V 
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4 x 4Gb Corsair Dominator 1866MHz Samsung 830 256GB LG DVD Burner Win 7 x64 
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DELL U3011 DELL U3011 DELL U2410 Ducy Shine 2 
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post #7 of 44
Personally Id aim for having a 1200 watt psu or higher, but whatever floats your boat.
    
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post #8 of 44
Thread Starter 
If I ABSOLUTELY have to, I'll save more money and get a better PSU, I'd just rather not tongue.gif
post #9 of 44
Quote:
Originally Posted by AddictedGamer93 View Post

Gonna need a 1200 watt at least. I recommend either the AX1200 or X1250 Gold, or if you are into multi railed psus, the High Current Pro 1200. And yes, these are way ver your budget, but thats what its gonna take.

No....
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3930k ASUS Rampage IV Gene EVGA GTX480 @ 900MHz @ 1.1V EVGA GTX480 @ 900MHz @ 1.1V 
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4 x 4Gb Corsair Dominator 1866MHz Samsung 830 256GB LG DVD Burner Win 7 x64 
MonitorMonitorMonitorKeyboard
DELL U3011 DELL U3011 DELL U2410 Ducy Shine 2 
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Enermax Platinum 1200W Silverstone FT03 G500 Native Instruments Komplete Audio 6 
Audio
Yamaha HS80m 
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Liquid
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CPUMotherboardGraphicsGraphics
3930k ASUS Rampage IV Gene EVGA GTX480 @ 900MHz @ 1.1V EVGA GTX480 @ 900MHz @ 1.1V 
RAMHard DriveOptical DriveOS
4 x 4Gb Corsair Dominator 1866MHz Samsung 830 256GB LG DVD Burner Win 7 x64 
MonitorMonitorMonitorKeyboard
DELL U3011 DELL U3011 DELL U2410 Ducy Shine 2 
PowerCaseMouseAudio
Enermax Platinum 1200W Silverstone FT03 G500 Native Instruments Komplete Audio 6 
Audio
Yamaha HS80m 
  hide details  
Reply
post #10 of 44
Thread Starter 
I guess I'm kind of stuck getting something bigger than, eh? hahaha, I guess I'll have to wait on ordering my third GTX 480 from newegg then... I was going to order it next week.
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