The Radeon RX 6900/6950 XT Owners Thread.

andyr · 25 Jan 2021 at 11:09

LtMatt said:
Sounds like your PSU might not be up to the task.

What are you using and how many cables?

Its a corsair RM850i but i'm only using 1 cable with two 8 pin plugs , i will have to try two seperate cables .
strange thing is that it will run timespy stress test but not benchmark

LtMatt · 25 Jan 2021 at 11:54

andyr said:
Its a corsair RM850i but i'm only using 1 cable with two 8 pin plugs , i will have to try two seperate cables .
strange thing is that it will run timespy stress test but not benchmark

Try two cables and see if it helps.

andyr · 25 Jan 2021 at 12:42

LtMatt said:
Try two cables and see if it helps.

Yes , works fine now and thanks
score 16706 , all at stock

LtMatt · 25 Jan 2021 at 12:45

andyr said:
Yes , works fine now and thanks
score 16706 , all at stock

Good stuff.

What is your default core clock speed as show in Radeon Software > GPU Tuning?

Mine is 2499.

andyr · 25 Jan 2021 at 13:01

LtMatt said:
Good stuff.

What is your default core clock speed as show in Radeon Software > GPU Tuning?

Mine is 2499.

Just enabling it without alteration its 2549

LtMatt · 25 Jan 2021 at 13:01

andyr said:
Just enabling it without alteration its 2549

Top bins.

NathG79 · 25 Jan 2021 at 13:22

I’m sure this has been talked about already but someone on here might be able to shed a bit more light.

I currently have a 6900XT hooked up on a cablemod vertical riser kit.
GPU-Z shows the GPU running @ 16x PcI-E 3.0. Obliviously before the riser was fitted it ran/showed as PcIE-4.0.

Will I notice any performance drop?.. or is it worth investing in the linkup 4.0 riser cable, (Which is £75) eeek!.

I’ve heard that most cards don’t yet saturate PCI-E 3.0 speeds. But what about infinity cache, Sam and other the other bells and whistles these new cards have, specifically the new 6000 series.

Thanks.

andyr · 25 Jan 2021 at 13:37

LtMatt said:
Top bins.

set my memory profile in bios and all at stock got 17407 in time spy.

What do you use for hosting images ?

NathG79 said:
I’m sure this has been talked about already but someone on here might be able to shed a bit more light.

I currently have a 6900XT hooked up on a cablemod vertical riser kit.
GPU-Z shows the GPU running @ 16x PcI-E 3.0. Obliviously before the riser was fitted it ran/showed as PcIE-4.0.

Will I notice any performance drop?.. or is it worth investing in the linkup 4.0 riser cable, (Which is £75) eeek!.

I’ve heard that most cards don’t yet saturate PCI-E 3.0 speeds. But what about infinity cache, Sam and other the other bells and whistles these new cards have, specifically the new 6000 series.

Thanks.

Nath, not sure if it helps much but can confirm with Linkup riser cable i get PCi express 4.0 for graphics interface showing in cpuz

LtMatt · 25 Jan 2021 at 13:46

andyr said:
set my memory profile in bios and all at stock got 17407 in time spy.

What do you use for hosting images ?

IMGUR.

andyr · 25 Jan 2021 at 14:01

LtMatt said:
IMGUR.

Thanks

muziqaz · 25 Jan 2021 at 14:39

GhostDog1981 said:
I had a Gigabyte 6900XT briefly then returned to another etailer as I couldn't see any perfomance jump from my Sapphire Nitro 6800XT.

I got Timespy Graphics scores of only 18600 on the 6900XT overclocked, versus 19500! on the 6800XT overclocked

The CPU I am using is only R5 3600 and a B550 ROG Mobo with 3600mhz RAM

Just wasn't worth it for me and couldn't justify a £500 price premium over the 6800XT Nitro.

I believe it has been known for a while now that 6800xt and 6900xt are bottlenecked by anything lower than 5000 series

NathG79 · 25 Jan 2021 at 17:03

@andyr

How long is the riser you purchased?.
Is it the right angle version?

Can only find a 10cm one on the rainforest.

andyr · 25 Jan 2021 at 18:03

NathG79 said:
@andyr

How long is the riser you purchased?.
Is it the right angle version?

Can only find a 100cm one on the rainforest.

Hi it was this one
LINKUP - Ultra PCIe 4.0 X16 Riser Cable [RTX3090 x570 B550 RX6900XT Tested] Shielded High-Speed Vertical Mount Gaming PCI Express Gen4 2021┃Universal 90 Degree Socket {30cm} 3.0 Gen3 Compatible
I see them on said site

Overlag · 26 Jan 2021 at 04:08

I got a very weird bug that's started since installing my 6900XT. I cannot get into the bios of my Crosshair 6 Hero now without clearing the CMOS every time i want to. Very odd and hopefully totally unrelated and just a coincidence.

LtMatt · 26 Jan 2021 at 06:53

Overlag said:
I got a very weird bug that's started since installing my 6900XT. I cannot get into the bios of my Crosshair 6 Hero now without clearing the CMOS every time i want to. Very odd and hopefully totally unrelated and just a coincidence.

Try disabling compatibility support module (CSM) under the Boot menu in the BIOS.

Conanius · 26 Jan 2021 at 09:45

AMD Reference 6900XT arrived yesterday. Very happy. I'll be replacing my 3900X with a 5900X/5950X as soon as I can find one for sale that isn't scalp central.

Pics for hall of fame entry

3DMark Scores so far...

https://www.3dmark.com/3dm/57345261

Timespy - 17925 with a GFX score of 19.4k. Not bad for a reference card, I think theres more in there but will be waiting till I get my new CPU and start tinkering with everything else properly...

LtMatt · 26 Jan 2021 at 11:30

Conanius said:
AMD Reference 6900XT arrived yesterday. Very happy. I'll be replacing my 3900X with a 5900X/5950X as soon as I can find one for sale that isn't scalp central.

Pics for hall of fame entry

3DMark Scores so far...

https://www.3dmark.com/3dm/57345261

Timespy - 17925 with a GFX score of 19.4k. Not bad for a reference card, I think theres more in there but will be waiting till I get my new CPU and start tinkering with everything else properly...

Nice, you managed to get from AMD directly?

What is your default core clock as shown in Radeon Software > Gpu Tuning ?

NathG79 · 26 Jan 2021 at 12:31

andyr said:
Hi it was this one
LINKUP - Ultra PCIe 4.0 X16 Riser Cable [RTX3090 x570 B550 RX6900XT Tested] Shielded High-Speed Vertical Mount Gaming PCI Express Gen4 2021┃Universal 90 Degree Socket {30cm} 3.0 Gen3 Compatible
I see them on said site

Thanks..

This is the one I have ordered.
Is there much slack cable left over on a 30cm cable?..

(Sorry to drag things off topic)

Kaapstad · 26 Jan 2021 at 18:47

Welcome all and on TROH.

The Roll of Honour.

Date 26/01/2021, Make AMD Reference, Conanius, Link
Date 24/01/2021, Make PowerColor Red Devil, eeii, Link
Date 23/01/2021, Make PowerColor Red Devil LE, Too Tall, Link
Date 15/01/2021, Make AMD Reference, Overlag, Link
Date 14/01/2021, Make XFX Merc 319, Seanoog, Link
Date 14/01/2021, Make PowerColor Red Devil, Heofz, Link
Date 13/01/2021, Make XFX Merc 319, ch99mr, Link
Date 10/01/2021, Make AMD Reference, Breezer, Link
Date 10/01/2021, Make XFX Merc 319, ronski, Link
Date 07/01/2021, Make AMD Reference, Biffa, Link
Date 06/01/2021, Make PowerColor Red Devil, heartburnron, Link
Date 04/01/2021, Make Sapphire Nitro+, Mister_tangerine, Link
Date 01/01/2021, Make Sapphire Nitro+, Jumper118, Link
Date 01/01/2021, Make AMD Reference, Jumper118, Link
Date 31/12/2020, Make AMD Reference, NathG79, Link
Date 30/12/2020, Make PowerColor Red Devil, Nugsy88, Link
Date 27/12/2020, Make AMD Reference, LtMatt, Link
Date 26/12/2020, Make AMD Reference, Abhishek Shukla, Link
Date 24/12/2020, Make AMD Reference, ch99mr, Link
Date 24/12/2020, Make Sapphire Nitro+, hornytoe, Link
Date 23/12/2020, Make AMD Reference, Diplodocus, Link
Date 23/12/2020, Make AMD Reference, DeathStorm, Link
Date 23/12/2020, Make PowerColor Red Devil, Jonnym28, Link
Date 17/12/2020, Make AMD Reference, DustyMiller, Link
Date 16/12/2020, Make AMD Reference, Curlyriff, Link
Date 16/12/2020, Make AMD Reference, Chewie, Link
Date 16/12/2020, Make AMD Reference, Too Tall, Link

To get on the Roll of Honour all you have to do is post a pic with your user name on it of your Radeon RX 6900 XT.

muziqaz · 26 Jan 2021 at 19:03

It's here. Finally