I built this desktop computer over the course of a few months, and it's been running for 3 months now. My problem has been persistent during this entire time that I've been using it, and I think it's finally time to ask for help in figuring this out. First off, here are my specs (nothing is overclocked):
ASUS M4A89TD Pro/USB3
Phenom II x4 975
Gigabyte 6870 HD (x2 for crossfire)
Emprex 21.5" LCD 1680x1050 60hz (Borrowing this until I get my own monitor)
G.SKILL 2x2GB DDR3 1600mhz (reads as 1333mhz in the bios, but it's not my main concern right now)
Antec HCG 750w
AZZA Spartan 102E
The problem is this: Whenever I try to utilize crossfire for gaming, within a (short) matter of time, everything goes haywire. The sound will go crazy (skips the last bit that got through over and over and over) while my monitor goes black, and then I'm told that there is no signal going to it. Then the sound cuts out entirely. I have no indication of whether or not I still have any input into the computer through my mouse and keyboard, and all I can do is hit the switch to power off the depressing way. I am able to boot right back up afterwards if I want to.
I've done a lot of experimenting and observing already, and here's what I know. I hope it's helpful.
-This is only a problem when I'm trying to use crossfire. If I disable crossfire, this NEVER happens. EVER.
-This issue only occurs under heavy load on the graphics cards. As in, either gaming or running a gpu benchmark (furmark).
-It doesn't matter whether the game I'm running supports crossfire or not.
-I have the latest drivers, the latest AMD Vision Engine Control Center, and the latest Application Profiles.
-When the issue occurs, my computer APPEARS to still be running. The CPU and PSU and case fans are all still spinning, the lights are still on... But I've noticed that the TOP GPU seems to be shut off. While the bottom GPU's fans continue to spin, the top's do not.
-The PSU is bottom-mounted, and is just beneath the lower GPU. I've tried turning the PSU upside down, to suck air in from the vent beneath where it's mounted. I thought perhaps the hot air from the bottom GPU was overheating the PSU. But nothing changed from this experiment.
-I've never seen the GPUs surpass 80C. Even during a furmark burn-in test, the issue pops up and I lose signal just as the top card is nearing 80C, which usually takes approximately 2-3 minutes.
-I recently updated my mobo bios to the latest version. I learned that my GPUs apparently have an official bios update available for them (right from gigabyte's site), but I have no idea how I would go about flashing them. I can't figure it out and I couldn't find a good guide to follow.
-I've tried swapping the cards in their top and bottom spots, and have even swapped out the crossfire cable wire thingy too. No changes.
I really hope someone can help me figure this out. Thanks in advance to anyone who spends some time with me on this.
ASUS M4A89TD Pro/USB3
Phenom II x4 975
Gigabyte 6870 HD (x2 for crossfire)
Emprex 21.5" LCD 1680x1050 60hz (Borrowing this until I get my own monitor)
G.SKILL 2x2GB DDR3 1600mhz (reads as 1333mhz in the bios, but it's not my main concern right now)
Antec HCG 750w
AZZA Spartan 102E
The problem is this: Whenever I try to utilize crossfire for gaming, within a (short) matter of time, everything goes haywire. The sound will go crazy (skips the last bit that got through over and over and over) while my monitor goes black, and then I'm told that there is no signal going to it. Then the sound cuts out entirely. I have no indication of whether or not I still have any input into the computer through my mouse and keyboard, and all I can do is hit the switch to power off the depressing way. I am able to boot right back up afterwards if I want to.
I've done a lot of experimenting and observing already, and here's what I know. I hope it's helpful.
-This is only a problem when I'm trying to use crossfire. If I disable crossfire, this NEVER happens. EVER.
-This issue only occurs under heavy load on the graphics cards. As in, either gaming or running a gpu benchmark (furmark).
-It doesn't matter whether the game I'm running supports crossfire or not.
-I have the latest drivers, the latest AMD Vision Engine Control Center, and the latest Application Profiles.
-When the issue occurs, my computer APPEARS to still be running. The CPU and PSU and case fans are all still spinning, the lights are still on... But I've noticed that the TOP GPU seems to be shut off. While the bottom GPU's fans continue to spin, the top's do not.
-The PSU is bottom-mounted, and is just beneath the lower GPU. I've tried turning the PSU upside down, to suck air in from the vent beneath where it's mounted. I thought perhaps the hot air from the bottom GPU was overheating the PSU. But nothing changed from this experiment.
-I've never seen the GPUs surpass 80C. Even during a furmark burn-in test, the issue pops up and I lose signal just as the top card is nearing 80C, which usually takes approximately 2-3 minutes.
-I recently updated my mobo bios to the latest version. I learned that my GPUs apparently have an official bios update available for them (right from gigabyte's site), but I have no idea how I would go about flashing them. I can't figure it out and I couldn't find a good guide to follow.
-I've tried swapping the cards in their top and bottom spots, and have even swapped out the crossfire cable wire thingy too. No changes.
I really hope someone can help me figure this out. Thanks in advance to anyone who spends some time with me on this.
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