PSU problem

[fuz12]

I just built a new system and everything was running smoothly until i launched a game and the computer shut off and restarted itself a few moments later. I know it has something to do with the power supply because I hooked up a different one and things are running fine. The original one is an OCZ GameXStream 700W which I thought would be plenty. The other one I tried hooking up was an OCZ 850W psu from a different computer. Here are my specs:

Intel Core i7 920
2 x GTS 250 1GB SLI
3 x 2GB DDR3 1600MHz
WD 1TB hdd
OCZ GameXStream 700W

Do you think the psu is deffective? I was certain 700W would be enough to run 2 GTS 250's in SLI but I may be wrong. Please let me know what you think.

Thanks

 

[o1die]

What's the problem? The 700w may not be enough for your system. You answered your own question. I can't test the ps for you. I would just try it on another system.

 

[ares1214]

actually, 700 watts might not be enough. i know it isnt the most accurate thing, but at the newegg wattage calculator it say your system is 722 watts, so that might be why. both psu are quality, so i dont think it is a defect.

 

[rolli59]

I just built a new system and everything was running smoothly until i launched a game and the computer shut off and restarted itself a few moments later. I know it has something to do with the power supply because I hooked up a different one and things are running fine. The original one is an OCZ GameXStream 700W which I thought would be plenty. The other one I tried hooking up was an OCZ 850W psu from a different computer. Here are my specs:

Intel Core i7 920
2 x GTS 250 1GB SLI
3 x 2GB DDR3 1600MHz
WD 1TB hdd
OCZ GameXStream 700W

Do you think the psu is deffective? I was certain 700W would be enough to run 2 GTS 250's in SLI but I may be wrong. Please let me know what you think.

Thanks

You tried another PSU problem fixed. That points to your original PSU. Being 700 watt it should be big enough but what amps does it have on the +12 volt rails. If there is plenty of amps it is most likely something wrong with it.

 

[JackNaylorPE]

I got 453 watts using Antec's calculator and I added in an optical drive, 4 USB, 1 firewire 15% capacitor aging, bunch of fans and an OC to 3.2 GHz

With twin GFX cards and serious OC, I'd look at a Antec SG-850 or Corsair HX-750/850
W/o heavy OC and Antec SG or TP 650 or a Corsair TX650 should do

 

[ares1214]

corsair recommends around 750 watts, so i dont know how there is such a big difference

 

[rolli59]

corsair recommends around 750 watts, so i dont know how there is such a big difference

Maybe there is no big difference. You said it yourself that the problem got fixed with another PSU. Yours might simply be defective.

 

[ares1214]

that definitely is possible, but that psu was also unquestionably within wattage needs. try the 700 watt in another computer, if it works, it isnt enough wattage, if it doesnt, then it is defective.