I finally got 2 working 7950's after months of RMA'ing.
Anyway, both these cards work on their own for the most part. I have a Gigabyte WF3 Ghz Edition and MSI Twin Frozr III.
So for the last month or so, i've been using the Gigabyte on its own. Like i said, it worked for the most part. I had been getting a lot of crashes and artifacts, but ever since going from dual monitor back to a single, it's happened less often.
I did try to RMA the card, but OCUK told me it was fine in testing. So that lead me to believe there might be an issue elsewhere in my system. So yesterday i got my MSI card, and upon enabling crossfire i got crashes as soon as any 3D app put load on the cards (usually within 10 - 30 seconds). So naturally i'd tend to think this is PSU related, and possibly what was causing my issues before.
So i did all the necessary steps, uninstalled drivers, ran driver sweeper, put power control settings to +20 in Catalyst. I also disabled ULPS and tried underclocking the cards as they both have factory overclocks. None of this worked of course, hence why i'm on here
My latest attempt involved unplugging all my mechanical HDD's and just leaving in 2 SSD's. Yes, i have 7 drives in total. Anyway, this kind of worked! I was able to run Unigine Heaven without a problem, however as soon as i exited it, i got a crash with a screen full of artifacts.
Could it be an issue with my PSU? I did log some stats through GPU-Z and it showed VDDC Current [A] with a maximum of 126.5. My PSU is apparently rated 70 amps on the 12v. So what i'm wondering is, would this be a faulty PSU or is it just not powerful enough? Bear in mind that those amps were logged when i had everything plugged in, all HDD's and under full load in Heaven. Or am i totally misunderstanding what VDDC Current is?
I'm gonna test another PSU later, just wanted to make sure i was on the right track first though. Might also be worth noting that i was able to xfire 5850's a couple of months ago, though i think i had 1 less SSD then.
Anyway, both these cards work on their own for the most part. I have a Gigabyte WF3 Ghz Edition and MSI Twin Frozr III.
So for the last month or so, i've been using the Gigabyte on its own. Like i said, it worked for the most part. I had been getting a lot of crashes and artifacts, but ever since going from dual monitor back to a single, it's happened less often.
I did try to RMA the card, but OCUK told me it was fine in testing. So that lead me to believe there might be an issue elsewhere in my system. So yesterday i got my MSI card, and upon enabling crossfire i got crashes as soon as any 3D app put load on the cards (usually within 10 - 30 seconds). So naturally i'd tend to think this is PSU related, and possibly what was causing my issues before.
So i did all the necessary steps, uninstalled drivers, ran driver sweeper, put power control settings to +20 in Catalyst. I also disabled ULPS and tried underclocking the cards as they both have factory overclocks. None of this worked of course, hence why i'm on here
My latest attempt involved unplugging all my mechanical HDD's and just leaving in 2 SSD's. Yes, i have 7 drives in total. Anyway, this kind of worked! I was able to run Unigine Heaven without a problem, however as soon as i exited it, i got a crash with a screen full of artifacts.
Could it be an issue with my PSU? I did log some stats through GPU-Z and it showed VDDC Current [A] with a maximum of 126.5. My PSU is apparently rated 70 amps on the 12v. So what i'm wondering is, would this be a faulty PSU or is it just not powerful enough? Bear in mind that those amps were logged when i had everything plugged in, all HDD's and under full load in Heaven. Or am i totally misunderstanding what VDDC Current is?
I'm gonna test another PSU later, just wanted to make sure i was on the right track first though. Might also be worth noting that i was able to xfire 5850's a couple of months ago, though i think i had 1 less SSD then.
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