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The Radeon RX 6900/6950 XT Owners Thread.

Would love some help if anyone has the time. I can't seem to reliably get timespy to work on my reference 6900xt. I left everything stock besides fast timing and was just trying to get a bit cooler by undervolting. It was working just fine at 1080 and now doesn't seem to run even at 1100mv with everything pretty much stock. I do have pbo enabled on my 5600x with curveoptimizer -10 on all but 2 2 best cores that are both -5. Sorry on phone I'll send screen shots later
 
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Zarban said:
Would love some help if anyone has the time. I can't seem to reliably get timespy to work on my reference 6900xt. I left everything stock besides fast timing and was just trying to get a bit cooler by undervolting. It was working just fine at 1080 and now doesn't seem to run even at 1100mv with everything pretty much stock. I do have pbo enabled on my 5600x with curveoptimizer -10 on all but 2 2 best cores that are both -5. Sorry on phone I'll send screen shots later
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Harlequin said:
Try it all at stock including cpu and ram
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And restart the PC. I've seen 3DMark bug out sometimes in Firestrike and Timespy where it crashes even with stable GPU settings. Resetting to default and restarting the system fixed it.
 
Ya I'm wondering bif that's the case because it'll work at a certain undervolt . I'll game a bit run it and it won't work . I'll bring the voltage up and it'll work. Does anyone possibly have any stable 6900xt reference card overclocks and undervolts that aren't to aggressive?
 
Zarban said:
Ya I'm wondering bif that's the case because it'll work at a certain undervolt . I'll game a bit run it and it won't work . I'll bring the voltage up and it'll work. Does anyone possibly have any stable 6900xt reference card overclocks and undervolts that aren't to aggressive?
Click to expand...
Morning, I was doing to write a statement on my recent findings with voltages and under volting.
What I've found is when you drop the voltage too far, what you've set goes out of the windows and the card takes over. You can see this behaviour by using HWinfo 64, and click on the GPU core voltage to set the graph going. I've noticed if you use extra power limit (255w default) +15% 293w this is where the card uses what it needs and you are totally wasting your time messing with the voltage tab as it makes no difference lol.
I'm currently using default clocks 500/2504 on my card, 1175mv max. That tab is closed, and +15% to push the clocks on the card with a 2122Mhz vram (fast). This is netting me 2.5Ghz in game clock, clearly the waterblock is helping too.
I'd give the card 100% fan and +15% power only and see what clocks it hits, it'll give you a ball park idea of where you can will sit.
Timespy is awful too the 2nd test is the one, if you are stable in that gaming is easy lol.
 
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