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The Radeon RX 6900/6950 XT Owners Thread.

Interesting. Well in that case maybe it is expected after all. As you are under water it should be much less of an issue for you luckily as your temps will be below the 95c limit.

XTXH chips really need water or AIO cooling to shine.

I'm not actually that impressed with the cooling on my card - I see peaks on the junction temp of 93c at stock in TS gfx test 2. Maybe it's a bad mount or crappy paste?
 
I'm not actually that impressed with the cooling on my card - I see peaks on the junction temp of 93c at stock in TS gfx test 2. Maybe it's a bad mount or crappy paste?
I’ve shared your post in the AMD subreddit for some extra exposure.
Looks like it is expected as confirmed above by Amiga. :)
I've closed the support ticket with XFX as it's supposed to be at 95C as XFX and then later Amiga confirmed above that his Gigabyte 6900 XTXH has the same 95c limit for hotspot.
 
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A user on oc.net suggested to use the second BIOS and increase the voltage to 1.2v using MPT and sure enough that works and you can use the GPU with a hotspot temp of up to 110c.

Had an initial reply from XFX support but I don’t think they fully understand issue as they said it’s expected.
Why return the card if you managed to get the temp and voltage the way you want with the merc LT Edition would that not now allow you to push the card past the standard merc black ?

I'm probably not the best person to judge - I really have no interest in running such an expensive piece of silicon at 115'C :p
But it works fine for me: GPU Hotspot Temps peak at 88'C in Time Spy, card is stable, and framerates are as expected.
It's probably more of an issue if you are trying to push the boundaries further.

Only observation vs the previous Asus TUF RX 6900 is that the fans seem to be a bit noisier under load - that could be because of the higher boost clocks.
That sounds promising i am the same regarding pushing the card i probably wouldn't overclock the card either i think they really need to be watercooled to avoid damaging the card with higher than spec overclocks. As long as it runs well that's the main concern. I may reconsider returning it

Thanks
 
Why return the card if you managed to get the temp and voltage the way you want with the merc LT Edition would that not now allow you to push the card past the standard merc black ?


That sounds promising i am the same regarding pushing the card i probably wouldn't overclock the card either i think they really need to be watercooled to avoid damaging the card with higher than spec overclocks. As long as it runs well that's the main concern. I may reconsider returning it

Thanks
I got the voltage where I wanted it, but not the temperature. It really needs to be water-cooled to get the most from it so I will stick with the Ultra Edition Merc.
 
Cheers Matt i agree. If i had ordered the card expecting a good overclock then i can see the disappointment in it actually being a bit of a backward step. I think if i had paid £250 more for a watercooled version of the card then i would really expect to push it a good amount beyond any air cooled version.
 
Cheers Matt i agree. If i had ordered the card expecting a good overclock then i can see the disappointment in it actually being a bit of a backward step. I think if i had paid £250 more for a watercooled version of the card then i would really expect to push it a good amount beyond any air cooled version.

My card was only 40 quid more (1589) than the Merc LE, so I'm happy with that.
 
I'm probably not the best person to judge - I really have no interest in running such an expensive piece of silicon at 115'C :p
But it works fine for me: GPU Hotspot Temps peak at 88'C in Time Spy, card is stable, and framerates are as expected.
It's probably more of an issue if you are trying to push the boundaries further.

Only observation vs the previous Asus TUF RX 6900 is that the fans seem to be a bit noisier under load - that could be because of the higher boost clocks.

About the fan noise..might sound silly and probably makes no difference but i noticed that dodgy support bracket cuts across the fan shroud no other card bracket does this. Have you tried the card without the bracket ? Might add noise being in the way of fans.
 
https://www.3dmark.com/spy/21384322

Is this a good score for my air cooled 6900 xt with a power limit of 400 watts set in MPT?
Yes, you could improve it with a lower temperature/higher fan speed.

You also want to check that your memory speed is not losing you any graphics score points above 2100Mhz.

For example I lose performance once i go over 2124Mhz on my sample.
 
Yes, you could improve it with a lower temperature/higher fan speed.
I already maxed out the fans of both my GPU and case intake fans. The temps are a bit high but its not throttling. The thing is I did this benchmark with 2600 MHz maximum frequency, however whenever I push it anything further than 2600 it just crashes. Like 2610 MHz crashes. So I guess this is all I will get from this card.
 
I already maxed out the fans of both my GPU and case intake fans. The temps are a bit high but its not throttling. The thing is I did this benchmark with 2600 MHz maximum frequency, however whenever I push it anything further than 2600 it just crashes. Like 2610 MHz crashes. So I guess this is all I will get from this card.
Okay, score looks about right for the clocks and temps. :)

What model are you using?
 
Has anyone noticed how much SAM has effected there temps?

I'm going to have to look into that - I just moved from a Z490 Godlike motherboard and 11700K CPU to a ASRock Taichi Razer Edition with 5950X and SAM turned on yesterday, and my temps during the stress test used to be 72 degrees C with 98 degree at junction/hot spot, and the junction temps jumped to 110 degrees with the same 72 degree GPU temps!

I have a new higher flow Fractal Meshify 2 case replacing my Corsair Carbide 678C, but I still have 7 fans (3 front intake ML140 RGB, 1 bottom intake ML140, 2 top out with radiator ML140, 1 backside output ML140 RGB. The 4 RGB fans top out at 1200 RPM, and the ML140 non-RGB on radiator and bottom can hit 2000 RPM loudly). The old Corsair case still has my old motherboard and CPU for a spare gamer build with my GTX 1080 or 6700 XT - it's a pain to build in the corsair case with a top mount rad and I didn't want to yank everything out to put in the new motherboard and CPU.

I didn't change my AMD Adrenaline settings from before. I have set my Sapphire Nitro+ 6900XT GPU MHz to stay between 2280 and 2600, and the system wont let me go below 1145 or 1150mv and still complete benchmarks, with memory set to max out at 2110. GPU Fans are set to hit 15% at 30 degrees, 30% at 50 degrees, 40% at 60 degrees, 50% at 80 degrees, 80% at 90 degrees. I see other people never going over 30-40% GPU fans in their builds. Power is set at +15.

My Timespy GPU scores rose from 19532 to 20145, and my CPU score rose from 12348 to 13239 = overall rose from 18032 to > 18683. Temps reported in Timespy are still low 70's degrees average. But with the AMD overlay open I think I saw the hot spot temps get to 108 to 110 degrees in Timespy - they've never been that hot before. Results were fairly consistent on Adrenaline 21.6.1 but never quite reaching as high as my first post-5950X-upgrade score.

Upgrading from Adrenaline 21.6.1 to 21.6.2 lowered my Timespy scores by about 100 points at the best of times, but made my 5950X CPU scores randomly vary as much as 500-600 points between tests, sometimes around 13,200 and other times around 12,500. I have XMP turned on in BIOS, and my G.Skill memory is running at it's rated 3600 MHz. I have not tweaked CPU or RAM in BIOS, just used XMP. At some point I updated the Taichi BIOS from rev 1.3 to Rev 1.5 with no help, BIOS which was needed to use SAM.

I am not using MPT to up the power limit - I'd like to make my board last, and that's why the 10-12 degree jump in junction/hot spot temps to 110C worry me. Thoughts?

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