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Which PSU for SLI

post #1 of 45
7/13/12 at 6:25am
Thread Starter 
Which PSU recommended for this gaming rig. I have cpu on water. I have 2 pumps, 3 radiators and 18 fans. PSU must be modular?

Asus P8Z77v- Deluxe
I7 3770k overclock to 4.8
2x Evga gtx 670SLI
Corsair dominator 8Gb

Thanks
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post #2 of 45
7/13/12 at 6:32am
I vote for the SILVERSTONE ST85F-P 850W

You probably only need 700-750 watts or less, but this silverstone 850 watt is on sale for $129.99 after MIR.
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post #3 of 45
7/13/12 at 6:38am
Thread Starter 
Are you sure that will be fine? Not enough W?
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post #4 of 45
7/13/12 at 6:40am
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I calculate 840W. hm,.. psu is not modular mad.gif
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post #5 of 45
7/13/12 at 6:42am
You would only need a 650w psu for that build.


http://www.newegg.com/Product/Product.aspx?Item=N82E16817151106

would do fine.
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post #6 of 45
7/13/12 at 6:43am
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650W for this rig?? bigeyedsmiley.png
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post #7 of 45
7/13/12 at 6:43am
Yep. Even a tad less, but I'd opt for 650w minimum.
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post #8 of 45
7/13/12 at 6:53am
Quote:
Originally Posted by M_T_M View Post

I calculate 840W. hm,.. psu is not modular mad.gif

The psu I linked is modular....newegg states it is Fully Modular and the pictures show the same.

And how were you calculating wattage? You really do not need much more than 700 watts.
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post #9 of 45
7/13/12 at 6:55am
While the rig will consume less than 650W at any given time, it should be said that it will be pushing a 650w unit pretty much to capacity.
When this happens the PSU will generate more heat and will be required to spin the fan up to compensate, therefore increasing sound levels.
Another thing to consider is that PSU's reach optimal efficiency at around 50% load. Knowing this, I think it would be in your best interest to get
at least a good quality (corsair, xfx, seasonic) 750W or even 850W PSU. This will ensure that your psu is funning cooler, quieter and at higher efficiency.

Also modular PSUs are very nice just for the sake of less cables you have to manage. If you want fully modular I would recommend the Corsair A Series or the Seasonic X series. Bother are actually made by Seasonic and will perform amazingly.

Hope this helps!

Edit: After looking at the your sig rig, your current PSU would be more than enough!
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post #10 of 45
7/13/12 at 6:59am
GTX670 will be about 180w with OC and a 3770K with a big OC will be about 100w. So that's about 460w for the three components and let's say you use 100w for everything else, so that's 560w. So really, 600-650w max for the psu for this build.thumb.gif
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CPUMotherboardGraphicsRAM
Intel I7 3970x @4.8GHz  Asus Rampage IV Extreme  EVGA GTX TITAN @1.2GHz Corsair Dominator Platinum @2.4GHz 
Hard DriveOptical DriveCoolingCooling
OCZ Vertex 4 256gb LG BluRay Burner EK Supreme HF/rx360/rx120/GT AP14/MCP655 EK-FC TITAN XXL Edition 
OSMonitorKeyboardPower
Windows 7 64bit Samsung 275t Plus Logitech K360 Corsair AX650 
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Corsair Obsidian 800d Performance MX Steelseries Aluminum Klipsch Pro Media 2.1 
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