I've just built a new computer. Here are the specs:
ASUS Crosshair Formula V
AMD Phenom II X4 965 Black Edition (4-core, @3.4GHz) (No OC)
4GB (2x2GB matched pair) OCZ PC3 10666 RAM
2x ASUS/ATI Radeon HD6870 1GB cards (running in crossfire)
Seagate 1TB Barracuda ST1000DM003 (SATA3/7200/64M) (Bought new)
Corsair VS650 PSU (Bought new)
At first, I had a lot of problems. BSOD and crashing. After updating the motherboard BIOS that stopped.
Now I'm having some issues specifically with the graphics cards.
Occasionally I've gotten a BSOD. Mostly while running in crossfire mode. They've all been GPU related. Unable to restart the GPU driver
- video scheduler error, etc.
Most of the errors have been in-game freezing. Either it freezes, freezes, then gives a black screen (mostly), or freezes, gives a black screen then crashes. In crossfire it's been most likely to crash and give a restarted the GPU driver message.
My PSU only has 2x 6-pin wires (on one branch of wires), so I've been using some 2x molex > 1x 6-pin converters for the other two (each card takes 2x 6-pin). I thought it may be a power issue due to this, but I'm leaning away from that conclusion now. The PSU is 650W so it should be enough. Even using one wire from one branch and another from a different branch it's had issues.
Not sure what to think.
All times are for Battlefield 3 online play unless stated otherwise. It's not just problems with this game though. Saints Row 3 and Sonic Generations have also seen freezing/crashing.
GPU 1 worked for 100 minutes (in Battlefield 3 Online and a few other games) with 1x Molex power and 1x 6-pin power. No problems. [Requires further testing to see if it was a fluke]
GPU 2 froze after 13 minutes with 1x Molex power and 1x 6-pin power.
GPU 1 froze after less than 4 minutes with 2x Molex power. [Also froze, black screened then recovered twice in Sonic Generations during about 10 minutes of play]
GPU 2 froze after 20 minutes with 2x Molex power.
GPU 1 with 2x 6-pin power worked for 120 minutes for Sonic Generations without problems but 16 minutes then froze for Battlefield 3.
GPU 2 froze after 9 minutes with 2x 6-pin power.
In Crossfire with GPU 1 first and GPU 2 second, I played for 60 minutes without problems in campaign mode of Battlefield 3.
In Crossfire with GPU 2 first and GPU 1 second, I had freezing/crashing often in various games.
It doesn't seem to be a specific card. It doesn't seem to be a specific configuration of power cables.
seem to not make a difference (Tried November 2010 version, beta version, most current stable version).
The PSU doesn't seem to be overheating as far as I can tell (fan is running - cool in box generally).
The GPU's haven't overheated. (Average temp 65 C - highest 71 C).
CPU hasn't overheated. Highest temperature during a freeze was 46 C.