How powerful of a PSU do I need

[Hribi]

I am looking for a new PSU and I was wondering if I need more than a 850W for:

Matična ASUS P6X58D E

CPU Intal i7 990X

OCZ Vertex 2 SATA II 2.5 90GB

OCZ Vertex 2 SATA II 2.5 90GB

Western Digital WD150HLFS VelociRaptor 150GB

Western Digital WD150HLFS VelociRaptor 150GB

Western Digital WD2002FAEX "Caviar® Black 2TB

Western Digital WD2002FAEX "Caviar® Black 2TB

Mushkin Blackline DDR3-1600 CL6 Kit "Ridgeback" 3x2048MB

Nvidia Quadro FX 3800

Nvidia GTX 570 SLi

Nvidia GTX 570 Sli

Asus Xonar HDAV 1.3

I have it overclocked and water cooled with:

Aquacomputer Aquaero 5 XT USB

Koolance RP-402X2 Dual 5.25in Reservoir for 1-2 PMP-400 Pumps

Koolance PMP-400 Pump

I was thinking on Corsair AX 850W PSU

Thanks

 

[Cyanide89]

More than 850w that's for sure.

 

[yassarikhan786]

850w should be wnough, but get the AX1200 for increased futureproofing

.

 

[Cyanide89]

850w should be wnough, but get the AX1200 for increased futureproofing

.

The AX850 would be most efficient at 75-85% load... with that hardware it would be very close to overdoing it. The Ax1200 would be ideal.

 

[S_I_N]

lol 1kwatt min imho cpu/mobo 2 ssd's 4 hdd's 3 gpu's and a sound card PLUS water cooling didnt say how many fans but those ad in as well. I'd plop down a Corsair AX1200 and forget it

 

[Hribi]

Ok thank you!