I'm not sure where to post this but if anyone knows Vegas it's you guys and gals. So here goes.
Parts list: i5 6600k Powercolor, Vega 64 Ref Card, G Skill Ripjaw V DDR4-3000, EVGA 850W 80+ Bronze Semi modular Atx
Id also like to note that with XMP and a 100% stable OC of CPU off and back to default still have issues.
I put a Vega 64 in there in place of my old R9 390. I pretty much had zero problems with the 390 but this is my THIRD Vega 64 and I have no clue what is going on. The AMD software will crash and need restarted. It will crash and basically cycle my screen to black screen then my monitor will cycle through all the inputs, find the Vega 64, then be ok but I have to reload my Wattman profile. Usually takes like 2 secs so not a big deal but annoying for a "top of the line" GPU. So the first one and the second that I had would freeze windows 10 when left idle, crash a few games, BSOD a few times etc etc. Third one has not BSOD, has not frozen windows, but still has some crashes (not as many) and the AMD software issues I mentioned above. I will say that Battlenet App when left on while PC is idle for a long time will freeze and go white screen when left idle but my profile in AMD goes back to default or crashes everytime this happens as well. Doesn't freeze windows though or BSOD. Like I said this is my third Vega 64 and I am BEYOND frustrated. Someone please help me.
I have reinstalled fresh windows 10 three times. I have tried the drivers many different ways. I have win 10 uninstalled them and reinstalled. I have rolled back. I have DDU exactly how they say to do it in safe mode without networking a few times. I have UV, OC, -25% power, +50% power. I have tried a whole bunch of Vega self UV guides and no matter what I do the AMD control panel software will crash from time to time. Newest BIOS on MOBO, Win 10 fully updated, Chipset drivers updated, etc. It is not thermal throttling except when left on default profile because that fan curve is a joke at best for these cards. My CPU is not overheating either nor is anything else according to HWmonitor as far as I can tell. I don't know what to do. It can't be another bad card... maybe my PSU? So please chime in if anyone can. I want to stay Red Team but this Vega 64 is making it hard... ( I have my reasons and am not here to debate Green vs Red and go green is NOT a fix for me right now. ) I mean the thing is a MONSTER when it works flawlessly.
Here are a few questions:
1) How does a PC react when a PSU is not enough power? I think maybe this is it but I don't want to buy a new PSU to find out. Any other way I can troubleshoot this?
2) Is the AMD driver software crashing their fault or is it my gpu's fault? Like I said I'm having way less problems with this 3rd card and do not want to keep sending them back because I'm starting to feel like I am the one missing something here and not the card itself.
3) Also anyone have experience with heaven valley? When I run HV in windowed mode and watch the monitoring in Wattman my GPU Mghz will drop like twice during the test from 1500 w/e it is to like 800. Why is this? Is this normal? How can I fix this? I thought I pretty much want a straight line the entire time for that test? Am I wrong? Again it's below 80c and supposedly throttles at 85c so that shouldn't be it.