Computer shuts down after running a game with 2x 580's

[hardyboys209]

My computer shuts down when i start a game with my 580's and im almost possitive its my psu. I tested each card and slot on the mobo. I just want to make sure. I'm expecting to buy a new one anyways.

Specs:
Rosewill Hive 750w
EVGA Gtx580 (SLI)
Gigabyte p67A-UD7-B3
i-5 2500k @ 3.30
500g Seagate

 

[toddybody]

Have any Windows error reports? Did it happen after any specific system change? New program/drivers installed?

If its the PSU, that sucks🙁 Hopefully Rosewill has a good warranty for you. Hardware certainties are more expensive but less frustrating that software uncertainties 😛

 

[JackNaylorPE]

Rosewill Hive is not a bad PSU..... at least not the 650.

http://www.hardwaresecrets.com/article/Rosewill-HIVE-650-W-Power-Supply-Review/1460/11

But the 750 is woefully undersized.

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-580/specifications

According to nvidia then, you need a quality 850 watter....more if overclocking

Thermal and Power Specs
Maximum GPU Temperature (in C) - 97 C
Maximum Graphics Card Power (W) - 244 W
Minimum System Power Requirement (W) - 600 W4

600 for 1st card and rest of system + 244 for 2nd card

http://www.guru3d.com/articles_pages/geforce_gtx_580_review,7.html

Here is Guru3D's power supply recommendation:

GeForce GTX 580

On your average system the card requires you to have a 650 Watt power supply unit.

GeForce GTX 580 in SLI

A second card requires you to add another 250 Watts. You need a 900+ Watt power supply unit if you use it in a high-end system (1 KiloWatt recommended if you plan on any overclocking).

For each other card (3-way SLI) that you add, just add another 250 Watts and 20A on the 12V rails as a safety margin. What would happen if your PSU can't cope with the load?: