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AX850 enough?

post #1 of 6
Thread Starter 
I am currently running an AX850 with crossfire 6950s at stock and an i7 2600K at 4.6 ghz. There has been a couple times where my PC has just turned off without and blue screens while playing BFBC2. I would generally say this is a PSU problem, but shouldn't by AX850 be plenty? I was thinking about getting an Kill-a-Watt plug from a local home improvement store and running prime95 and furmark to see how much power it really uses. Good idea? Any thoughts?

Thanks!
post #2 of 6
Quote:
Originally Posted by yanks8981 View Post
I am currently running an AX850 with crossfire 6950s at stock and an i7 2600K at 4.6 ghz. There has been a couple times where my PC has just turned off without and blue screens while playing BFBC2. I would generally say this is a PSU problem, but shouldn't by AX850 be plenty? I was thinking about getting an Kill-a-Watt plug from a local home improvement store and running prime95 and furmark to see how much power it really uses. Good idea? Any thoughts?

Thanks!
A HX650w would be enough for that setup...

It could be a bad PSU or maybe cabling. I would check that everything is tight and in place. Have a spare PSU you can test with? Maybe pull out a 6950 and see how your rig does with a backup.
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post #3 of 6
It should be plenty. However, it sounds like you've stress tested your rig and it didn't fail, so I assume your overclock is stable.

Edit: Is it ridiculous to suggest BFBC2 is just acting up? Maybe something water-cooling related?
Edited by t-ramp - 8/8/11 at 11:20am
post #4 of 6
You're right: the AX850 should be overkill for this.

AMD recommends a 500W peak-rated power supply to power a system that has just one 6950 in it, so that means even a quality 650W PSU is enough.

It sounds like it could be a heat problem.
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by t-ramp View Post
It should be plenty. However, it sounds like you've stress tested your rig and it didn't fail, so I assume your overclock is stable.

Edit: Is it ridiculous to suggest BFBC2 is just acting up? Maybe something water-cooling related?
My temps running Prime95 in the past were around 60, and BFBC2 shouldnt be worse than that, if anything better. My GPUs are always around 45. I only seem to have problems with BFBC2. I love the game, but hate it at the same time.
post #6 of 6
6950 CF = GTX 580 of power required

AX850 can run two GTX 580s

sounds like either your vid card is broken or your psu.

Update all drivers to latest.

1. test each card separately
2. if both card work fine...then try to locate another psu
3. test each card separately again with the diff. psu
4. test both card in CF with the diff. psu.
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