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The Radeon RX 6900/6950 XT Owners Thread.

I think 100C (to 105C?) is "fine" for a 6900 (if you can stand the noise!) but I also seem to remember further back in this thread that a 6950 shouldn't go over 90/95C on hotspot iirc.
 
Wing-Man:
Wing-Man said:
@buttkinz
If your having lock up and black screen at stock setting. I’d look at other problems and not just the GPU.

I remember back in my x99 days, battlefield would do the same stuff and ever other games was fine. After week of testing and so it it turned out to be ram settings
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I got a fresh set of ram that were in the list for the motherboard just in case, in the end I just got a 7900xtx. Although I had to reinstall windows as the crashes had made a right mess of all the programs, got a new ssd as well just in case. Have got nearly a full computer left over now . What I have found is the 6900 has 3 white led’s that light up momentarily on boot. Sometimes 1 of them lights up half way and dims, if I kept booting it I could get all three to work the same and I had no crashes then. I guess it points to the you having a power fault maybe, I tried swapping psu cables etc
 
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Finally got round to playing with overclocking, 4677 without BIOS mods / MPT or similar, seems stable:
www.3dmark.com

I scored 4 677 in Steel Nomad

AMD Ryzen 7 5700X3D, AMD Radeon RX 6950 XT x 1, 32768 MB, 64-bit Windows 11}
www.3dmark.com www.3dmark.com

Scores start to go backwards with the memory any higher so I assume we're getting into memory error territory or something... I was down to 1060mV on Nomad but that was not stable anywhere else.
 
Aztec2Step said:
Just got my hands on a Sapphire MBA 6900XT (secondhand, mates rates). Makes a decent bump in performance from my overclocked Sapphire Pulse 6800 (non-XT) so I should be able to hold off a more expensive GPU upgrade for a couple of years! :D
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And you still have more Vram than a RTX 5070 and a 6900XT can actually draw real frames itself lol.
 
Mercurial said:
I think 100C (to 105C?) is "fine" for a 6900 (if you can stand the noise!) but I also seem to remember further back in this thread that a 6950 shouldn't go over 90/95C on hotspot iirc.
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downclocking these cards even in 4k works great
mine runs 120w to 160w in 4k.
silently
once your game experience is the same you can drop fps to match that and no difference in gameplay.
one game I went from 220fps to 150fps no difference in gameplay

and the price I paid is really was a bargain for the performance
 
I got my 6900XT 4 years ago, and hope to have it for a few years more. I upgraded from a 2015 GTX 970.

I'm a big fan of keeping graphics cards for a long time, and then having a big bump up in performance and seeing real jump in performance for your money.

My son currently is quite happy with the old GTX 970 in his machine still - he's currently got a 7800X3D, so is saving up for a new graphics card. He'll see a huge leap when he pays up £££.
 
RBImGuy said:
downclocking these cards even in 4k works great
mine runs 120w to 160w in 4k.
silently
once your game experience is the same you can drop fps to match that and no difference in gameplay.
one game I went from 220fps to 150fps no difference in gameplay

and the price I paid is really was a bargain for the performance
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Couldn't agree more. I run at 1440p, and set the min and max clocks to 2200 and 2300 respectively (Adrenaline detects max clock at 2524), and undervolt by -50 for everyday and don't touch the memory (if I do I set it to 2112, a sweet spot Lt.Matt mentioned ages ago), I don't even bother taking -10 off the power. This results in an almost silent card which chews through everything with good efficiency.

For reference I play single player mainly and cap my monitor to 120mhz.

I'm looking to getting a RX9070XT (price/perf depending), but may stick with 6900XT myself, and put that in my sons build (originally it was going to be the other way around).

Edited to add - I also now play most games in Linux, the performance is great in the majority of titles i've played, Cyberpunk for example using the same settings gets >10fps in the benchmark demo under Linux compared to Win11.
 
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Aztec2Step said:
Just got my hands on a Sapphire MBA 6900XT (secondhand, mates rates). Makes a decent bump in performance from my overclocked Sapphire Pulse 6800 (non-XT) so I should be able to hold off a more expensive GPU upgrade for a couple of years! :D
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My 6950XT Red Devil performs great for me at 1440p, so I assume your 6900XT is similar. You'll be golden with that card.
 
teejay73 said:
My 6950XT Red Devil performs great for me at 1440p, so I assume your 6900XT is similar. You'll be golden with that card.
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Yeah, 1440p here too (and occasional 2160p). To be fair, the 6800 was doing just fine but I couldn't resist a steal of a 6900XT! The missus now gets the same upgrade I got 4 years ago, to a 6800 from a Vega 56 which is a doubling of performance.
 
I've been running my MBA card bone stock since day one... always thought about undervolting/overpowering, but was too busy gaming :D

Are there any "idiot proof" settings you'd recommend to get it running more efficiently, and perhaps pull a few extra frames at the same time?

Cheers!
 
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Sumanji said:
I've been running my MBA card bone stock since day one... always thought about undervolting/overpowering, but was too busy gaming :D

Are there any "idiot proof" settings you'd recommend to get it running more efficiently, and perhaps pull a few extra frames at the same time?

Cheers!
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If you see my post at #4752 it's some pretty standard base settings to work from. I've tweaked further in the past, but those are the ones I've settled on for 'set and forget'. You may do better :)
 
Thanks! What were you optimizing for there? Just being cool and quiet with some fps sacrifice, I guess?

If I wanted to go the other way (i.e., give it more of a power limit for moar fps) what are the trade-offs (other than, I assume, more heat and noise!).
 
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Sumanji said:
Thanks! What were you optimizing for there? Just being cool and quiet with some fps sacrifice, I guess?

If I wanted to go the other way (i.e., give it more of a power limit forhttps://www.youtube.com/watch?v=MgYnKu8RYAU moar fps) what are the trade-offs (other than, I assume, more heat and noise!).
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Yep, cool and quiet. If I was going for FPS I would up the min and max clocks to in my case 2400/2524, keep the undervolt at -50, up the power slider to 5% and change the memory to 2112 (edit - Fast timings). Your settings may vary, for instance on any more than 5% on the slider makes negligible difference for me, but power draw goes way up.

Trade offs are heat noise and power draw as you surmised

EDIT - also see post #4624 for some interesting things @Firegod found when undervolting.
 
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harmattan said:
I moved to a 6950xt last month after I sold my 4090 im preparation for the next-gen cards. My "problem" is the 6950xt plays everything very well, so now I have little reason to upgrade.
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people dont understand the difference when actual gaming has no to little difference in gameplay
but you pay 3x as much for a nvidia card that dont do any difference
utube reviewers dont understand that
 
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