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Is my PSU big enough?

  • Power Supplies
  • Components
Last response: in Components
August 19, 2012 11:10:04 PM

Hi All,

Recently I built the following system, some parts were from my previous build namely HDD, Case and PSU.

New Parts:
Intel Core i7 3930K
G.Skill 16GB (4x4GB) DDR3 Kit, PC-12800 (1600Mhz), RipjawsZ, 9-9-9-24-2N
Asus Rampage IV Formula, X79
Gigabyte 7970 3GB x 2 (Crossfired) Cat 12.8
3 x 23" Samsung LCD monitors (5760x1080)

Existing Parts:
2 x WD 500GB HDD
1 x OCZ Agility 3 120GB
1 x OCZ Agility 3 240GB
Thermal Take tough power 850W
Raven II case

OS Win 7 64bit Pro

Now the the issue I have is the system locks during gaming, usually after about 15 min or so. I can't even use the reset boutton on the case, I have to physically cut the power.

With general apps like Firefox for example I'm getting corruptions in the text and then a black viewing area, with IE9 I'm only getting corrupted text.

With 2 HDDs, 2 SSDs, 2 7970s and 4 120 fans running, do I need beefier PSU?

More about : psu big

a b ) Power supply
August 20, 2012 12:48:36 AM

Unless your PSU is faulty it is enough.

What are the temps while playing games?
a c 432 ) Power supply
August 20, 2012 2:05:00 AM

Although I prefer single rail PSUs, there is nothing wrong with that PSU powering a pair of 7970s. You should have room to spare... depending on what other power hungry components you have in the system.
August 21, 2012 11:36:55 PM

I've fixed the issue by rolling back the video card drivers to Cat 12.4

Strange that I had issues with 12.8 where so many others don't. Need look into this more.