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580 sli with psu - Page 2

post #11 of 14
I previously had a Corsair TX750W..... and that worked half way with my i7 system on 2 SSD, and 3HDD's... The very demanding games like 3dMark11 started throttling and slowing down like the videocards weren't getting too much power... Then upgrading the PSU fixed it. Also make sure u set the power management and multi-display (if one display) both to maximum performance/single display performance under the Nvidia Control panel...
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post #12 of 14
Your are fine. I checked my system before and it uses around 850 watts from the wall. Thats with 1.15v for both gpu's, 1.44v for the cpu, 18 fans and dual water pumps.
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post #13 of 14
Quote:
Originally Posted by Desert Rat View Post
Your are fine. I checked my system before and it uses around 850 watts from the wall. Thats with 1.15v for both gpu's, 1.44v for the cpu, 18 fans and dual water pumps.
Exactly. And @OP don't forget that the 850W that the PSU is rated for is DC output from the unit to the PC, not the AC input from the wall. 850W from the wall means the PSU is outputting around 700W to the PC, so he has 150W of headroom left ... and he's doing some pretty extreme overvolting on his system, plus he has the pumps, etc.

HX850W is plenty for OC'd SLI 580's + OC'd processor.
    
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xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
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hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
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asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
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post #14 of 14
Thread Starter 
thanks guys then i probably wont change my psu
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