So I built a multi gpu mining rig using older gaming cards bought used. I have 2 r9 290xs, a r9 290 and an r9 390. Running on an msi z170a with an i5 6500t , 8gb ram, with a 750 and 1200w psu. Had slight stability issue but had it running nice. Rebooting ever other day for the last week. So one morning I wake up and see that windows had frozen. Did a reboot and my 290 had an opencl error couldn’t write dag for buffer. Tried uninstalling and reinstalling everything, switching risers, virtual memory is fine. Even by itself when the card tries to mine I get that error or the system crashes and I check event log and it says there was a bug check and memory dump but I have no idea how to check the memory dump. The card shows up in device manager, afterburner, gpu-z and claymore. It is running and fine until under load. Shouldn’t be a psu issue as it was running fine for weeks. Have tried lidag gser and eres commands with no luck. Best I got was after freshly installing it was mining for maybe one minute with all four cards before crashing and getting same error or crash. Getting another 290x and brand new 1080ti tomorrow to add so will do more tests. Any ideas? I know there’s a good chance the card is bad but it’s running fine until under load?
System runs fine with all four cards in but only the other 3 mining. Stable for 12+ hrs
I have the registry tweaks and a few other windows ten tips but any advice on stability is welcome too.