The RX 6000 series Owners' Club

[Felix123BU]

You're correct, although JayZ2Cents isn't very proficient with overclocking AMD cards at all. I'm sure the equivalent of a 6900XT Golden Sample under ice water with a higher voltage and power limit would score better than 20900 in Timespy. With MPT to up the wattage by 60-70 watts, and some tweaking in Wattman, you can probably score upwards of 22-23k on that card.

Indeed, I was basically screaming the whole video "MPT, MPT, MPT", there is one universal thing that makes the 6000 series quite a lot faster, MPT and moar watts


Core voltage control would be brilliant too, assuming it will ever happen.

 

[Space Lynx]

Indeed, I was basically screaming the whole video "MPT, MPT, MPT", there is one universal thing that makes the 6000 series quite a lot faster, MPT and moar watts


Core voltage control would be brilliant too, assuming it will ever happen.

wth is mpt, i have had a 6800 since launch and no idea what y'all are on about lol

 

[Felix123BU]

wth is mpt, i have had a 6800 since launch and no idea what y'all are on about lol

More Power Tool, igors lab, allows you to up the power limits on these cards over their maximum, giving a nice performance boost, at the cost of more heat and ofc more power

 

[Space Lynx]

More Power Tool, igors lab, allows you to up the power limits on these cards over their maximum, giving a nice performance boost, at the cost of more heat and ofc more power

i just looked into it, yeah im not willing to do a biosflash to use it. if i was under custom water i'd give it a go, but stock cooler even with strong fan curve, i don't want to push it more than it already goes on the junction temp

 

[Felix123BU]

i just looked into it, yeah im not willing to do a biosflash to use it. if i was under custom water i'd give it a go, but stock cooler even with strong fan curve, i don't want to push it more than it already goes on the junction temp

You do not need to do a biosflash to use it, just to extract the bios, load it into MPT, modify power setting, write to the windows soft power play table and you are good to go for increased power (basically some registry tweks). You do not need to flash a modified bios to the card

And yeah, it depends on how good your cooling is, if your JT is already very high, then its not an option, you need very good cooling to raise power "safely"

 

[Raendor]

Finally after hours of different issues I’m starting to find the clock and voltage settings that allow me to run RDR2 (my test game) at below 220w (more often around 200w) mark. Had to set 2250-2350MHz range and 1075 voltage. It’s pretty stupid that these settings don’t really mean much in relationship with ingame numbers as my clock hovers at around 2300 mark and voltage at 1000mv. When set 1050 seems unstable and 1100 is already too much wattage to my liking. Seems I might try to test in between or just settle and not bother. At default fan curve i had junction in mid-high 80s, but with custom fan up to 60% junction sits at mid 70s and overall in 60s at about 50% rpm. Might lower the curve too for some middle ground. Overall, it’s ok, but too much time consuming.

 

[turbogear]

I own now 6900XT Lquid Devil Ultimate since Saturday.
I bought it as birthday gift for myself as the replacement for my damaged 6800XT.



The 6800XT which got damaged with ESD was sent few days ago to the shop for repair or replacement.
Let's hope for the best.
I am not sure if it would be repaired at all as I had original cooler removed before and replaced with water cooler.
I put the card back in original form, but I am sure they will recognize that the warranty stickers were removed one time and placed again.
So I don't know if I would get a replacement for that or not. If I get the replacement for that then I will sell that on eBay.


The 6900XT Liquid Devil Ultimate is completely another beast. It is special binned 6900XT to achieve higher performance.
AXRX 6900XTU 16GBD6-W2DHC/OC - PowerColor

It has two Bios file; the OC and the Unleash.
The second "Uleash bios" has default power setting of 332W. If you put 15% from Radeon Software slider you have then 382W headroom.

This card is a monster of performance I can say already with the first short test session.
Already applying the Auto Tuning GPU overclock gave a good feeling that I have got a very capable card on my hands.
I had multiple 6800XT and 6900XTs in my hands but this is the highest ever auto OC frequency.

I had very little time on weekend to play around with it due to my birthday and with just a little tuning only on the Core frequency, I was able to get it stable running at 2750MHz@1175mV.
Fire Strike Stress test passed with score of 98.8% with these settings. I am sure a little more tuning of voltage will bring the stability score in range of 99.5%.

This is the Time Spy score.
I have not at all yet tuned VRAM and is set default.
I believe the score will go in direction of 22K or higher ones I tune the VRAM frequency.
I did not also try higher GPU clock. Maybe something like 2800MHz would also be possible.



I ran Assassin's Creed Valhalla benchmark and this is already 11% faster than my 6800XT which was overclocked to 2750MHz@1020mV and gave 123 FPS on average and here I have 137 FPS.



Here are the settings that I used:



For the air-cooled 6900XT Ultimate, one need to apply some more power with MPT as default with OC bios is set by PowerColor to only 303W.
For the Liquid 6900XT Ultimate it is as mentioned above 332W for Unleash bios.
I had chat with W1zzard on Sunday and he provided me with a new beta GPU-Z which now supports these new cards. Thanks @W1zzard for the help. You are really great.


So I was able to save the bios to load it into MPT. I also uploaded both Bioses to the TPU database.
Note: One needs MPT version 1.3.4. The older version 1.3.3 does not support these new cards.


I have not changed anything with MPT so far, but only looked at default settings for the Unleash bios.
So you can see below that 332W is default, i.e. 382W total power with 15% slider.
There is still performance on the table. Looking at the TDC, it is set to 320A by default.
It can be pushed further in direction of 382A to match with Core power.

The maximum GFX voltage is 1200mV for this card compared to 1175mV for regular 6900XT.


The frequency slider here can go up to 4GHz.
I am pretty sure, I will never be able to reach that frequency.



I am hesitating at the moment to push the card to it limits.
I have suspicion that the ESD shock that killed my 6800XT could also have affected the PSU.

The new card ran perfectly fine with these really high power setting on the same PSU, but I don't have a piece of mind and don't want to risk this high end card.
I am looking for a new 1200W supply. HX1200i is the one I own and would love to get same again but really difficult to get any Platinum rated 1200W supplies at the moment.

PowerColor recommends on their website a minimum of 900W power supply for this card.

 

[xenosys]

I own now 6900XT Lquid Devil Ultimate since Saturday.
I bought it as birthday gift for myself as the replacement for my damaged 6800XT.

View attachment 197423

The 6800XT which got damaged with ESD was sent few days ago to the shop for repair or replacement.
Let's hope for the best.
I am not sure if it would be repaired at all as I had original cooler removed before and replaced with water cooler.
I put the card back in original form, but I am sure they will recognize that the warranty stickers were removed one time and placed again.
So I don't know if I would get a replacement for that or not. If I get the replacement for that then I will sell that on eBay.


The 6900XT Liquid Devil Ultimate is completely another beast. It is special binned 6900XT to achieve higher performance.
AXRX 6900XTU 16GBD6-W2DHC/OC - PowerColor

It has two Bios file; the OC and the Unleash.
The second "Uleash bios" has default power setting of 332W. If you put 15% from Radeon Software slider you have then 382W headroom.

This card is a monster of performance I can say already with the first short test session.
Already applying the Auto Tuning GPU overclock gave a good feeling that I have got a very capable card on my hands.
I had multiple 6800XT and 6900XTs in my hands but this is the highest ever auto OC frequency.

View attachment 197425


I had very little time on weekend to play around with it due to my birthday and with just a little tuning only on the Core frequency, I was able to get it stable running at 2750MHz@1175mV.
Fire Strike Stress test passed with score of 98.8% with these settings. I am sure a little more tuning of voltage will bring the stability score in range of 99.5%.

This is the Time Spy score.
I have not at all yet tuned VRAM and is set default.
I believe the score will go in direction of 22K or higher ones I tune the VRAM frequency.
I did not also try higher GPU clock. Maybe something like 2800MHz would also be possible.

View attachment 197419

I ran Assassin's Creed Valhalla benchmark and this is already 11% faster than my 6800XT which was overclocked to 2750MHz@1020mV and gave 123 FPS on average and here I have 137 FPS.
View attachment 197420


Here are the settings that I used:
View attachment 197421


For the air-cooled 6900XT Ultimate, one need to apply some more power with MPT as default with OC bios is set by PowerColor to only 303W.
For the Liquid 6900XT Ultimate it is as mentioned above 332W for Unleash bios.
I had chat with W1zzard on Sunday and he provided me with a new beta GPU-Z which now supports these new cards. Thanks @W1zzard for the help. You are really great.


So I was able to save the bios to load it into MPT. I also uploaded both Bioses to the TPU database.
Note: One needs MPT version 1.3.4. The older version 1.3.3 does not support these new cards.


I have not changed anything with MPT so far, but only looked at default settings for the Unleash bios.
So you can see below that 332W is default, i.e. 382W total power with 15% slider.
There is still performance on the table. Looking at the TDC, it is set to 320A by default.
It can be pushed further in direction of 382A to match with Core power.

The maximum GFX voltage is 1200mV for this card compared to 1175mV for regular 6900XT.
View attachment 197422

The frequency slider here can go up to 4GHz.
I am pretty sure, I will never be able to reach that frequency.
View attachment 197424


I am hesitating at the moment to push the card to it limits.
I have suspicion that the ESD shock that killed my 6800XT could also have affected the PSU.

The new card ran perfectly fine with these really high power setting on the same PSU, but I don't have a piece of mind and don't want to risk this high end card.
I am looking for a new 1200W supply. HX1200i is the one I own and would love to get same again but really difficult to get any Platinum rated 1200W supplies at the moment.

PowerColor recommends on their website a minimum of 900W power supply for this card.

Looks great!

Nice to see someone post some more information regarding this card. It's like finding a needle in a haystack at the moment. Would be interested to see what sort of scores you could post with another 70-80 watts of power given it's a 525w card, with some tweaking in Wattman to Memory, Voltages and Frequencies. I can easily see this card hitting 22.5-23k with a stable 2850-2900Mhz on the core clock in 3D Mark.

 

[turbogear]

Looks great!

Nice to see someone post some more information regarding this card. It's like finding a needle in a haystack at the moment. Would be interested to see what sort of scores you could post with another 70-80 watts of power given it's a 525w card, with some tweaking in Wattman to Memory, Voltages and Frequencies. I can easily see this card hitting 22.5-23k with a stable 2900Mhz on the core clock in 3D Mark.

Yes, there seems to be still a lot of potential, but as I said I am at the moment hesitant to push it very high before I can get another 1200W Platinum class PSU.
The reason why my 6800XT died was ESD shock onto the card. It could be that PSU also got some of the hit.
So I am careful at the moment before I get a new supply. I don't want to risk this nice expensive piece of HW.
I paid 2349€ for this 6900XT Performance monster.

Ones I have a new supply I will RMA my Corsair HX1200i so that it can be checked by them.
It has 7 years warranty and I have it since 3 years.

There are not many review out there and with some that I found the reviewers seems to not know how to handle RDNA2 card when it comes to OCing and they were not getting any performance out of it.
Maybe I am supper lucky and their samples were not so good or they just don't know how to properly tune these.

Some reviewers had the air-cooled Ultimate which is limited to 303W and that could be reason for them not getting good performance.
One of the reviewer wrote that for his LC testing he got new 332W bios from PowerColor.
So basically maybe PowerColor sent him bios from the Liquid Devil Ultimate to flash it onto his air-cooled Ultimate.
They sent him new version of flashing tool amdvbflashWin v3.2.
I have the amdvbflashWin v3.15 but that does not support the Ultimate cards.

So theoretically maybe it is possible to flash 6900XT Liquid Devil Bios onto air-cooled 6900XT Ultimate, but one does not need to flash a bios to get higher power targets.
That is easily done with MPT.

 

[Space Lynx]

Seeing as how the world of silicon is now dead due to mining until at least 2023... I may consider going full custom water... always wanted to... could get an EK block for my 6800 and try this wattman stuff out. its safe to OC heavy on water 24/7? as long as temps are ok? i care about longevity of my gpu is main reason i don't bother.

 

[turbogear]

Seeing as how the world of silicon is now dead due to mining until at least 2023... I may consider going full custom water... always wanted to... could get an EK block for my 6800 and try this wattman stuff out. its safe to OC heavy on water 24/7? as long as temps are ok? i care about longevity of my gpu is main reason i don't bother.

Putting a water block onto these cards is easy.
The temperatures would be much better.
The performance depends on the silicon lottery.
If you are lucky and have a great card then it could be pushed more if not then water cooling does not help.

For the 6800 you should not push the power with MorePowerTool as far as for example like 6800XT or 6900XT.
If you have reference card then the VRM is not as powerful like the 6800XT reference. You card has I think less phases.
For non-reference cards most probably you will find some with more powerful VRMs.

 

[GamerGuy]

@turbogear - I have the excellent Nitro+ RX 6900 XT and I find myself actually jealous of you with that awesome RX 6900 XT LDU!

Regardless, 'grats on scoring that monstrous card!

 

[turbogear]

@turbogear - I have the excellent Nitro+ RX 6900 XT and I find myself actually jealous of you with that awesome RX 6900 XT LDU!

Regardless, 'grats on scoring that monstrous card!

Thanks a lot.
If the 6800XT did not fail, I would have not given any chance anymore to another 6900XT.
I had tested two 6900XT before, the Red Devil and Sapphire Toxic and both were not worth the money as my 6800XT OCed to within 300-400 points from both of them, but these new XTXH silicon cards seem to in their own league.

 

[ratirt]

I own now 6900XT Lquid Devil Ultimate since Saturday.
I bought it as birthday gift for myself as the replacement for my damaged 6800XT.

View attachment 197423

The 6800XT which got damaged with ESD was sent few days ago to the shop for repair or replacement.
Let's hope for the best.
I am not sure if it would be repaired at all as I had original cooler removed before and replaced with water cooler.
I put the card back in original form, but I am sure they will recognize that the warranty stickers were removed one time and placed again.
So I don't know if I would get a replacement for that or not. If I get the replacement for that then I will sell that on eBay.


The 6900XT Liquid Devil Ultimate is completely another beast. It is special binned 6900XT to achieve higher performance.
AXRX 6900XTU 16GBD6-W2DHC/OC - PowerColor

It has two Bios file; the OC and the Unleash.
The second "Uleash bios" has default power setting of 332W. If you put 15% from Radeon Software slider you have then 382W headroom.

This card is a monster of performance I can say already with the first short test session.
Already applying the Auto Tuning GPU overclock gave a good feeling that I have got a very capable card on my hands.
I had multiple 6800XT and 6900XTs in my hands but this is the highest ever auto OC frequency.

View attachment 197425


I had very little time on weekend to play around with it due to my birthday and with just a little tuning only on the Core frequency, I was able to get it stable running at 2750MHz@1175mV.
Fire Strike Stress test passed with score of 98.8% with these settings. I am sure a little more tuning of voltage will bring the stability score in range of 99.5%.

This is the Time Spy score.
I have not at all yet tuned VRAM and is set default.
I believe the score will go in direction of 22K or higher ones I tune the VRAM frequency.
I did not also try higher GPU clock. Maybe something like 2800MHz would also be possible.

View attachment 197419

I ran Assassin's Creed Valhalla benchmark and this is already 11% faster than my 6800XT which was overclocked to 2750MHz@1020mV and gave 123 FPS on average and here I have 137 FPS.
View attachment 197420


Here are the settings that I used:
View attachment 197421


For the air-cooled 6900XT Ultimate, one need to apply some more power with MPT as default with OC bios is set by PowerColor to only 303W.
For the Liquid 6900XT Ultimate it is as mentioned above 332W for Unleash bios.
I had chat with W1zzard on Sunday and he provided me with a new beta GPU-Z which now supports these new cards. Thanks @W1zzard for the help. You are really great.


So I was able to save the bios to load it into MPT. I also uploaded both Bioses to the TPU database.
Note: One needs MPT version 1.3.4. The older version 1.3.3 does not support these new cards.


I have not changed anything with MPT so far, but only looked at default settings for the Unleash bios.
So you can see below that 332W is default, i.e. 382W total power with 15% slider.
There is still performance on the table. Looking at the TDC, it is set to 320A by default.
It can be pushed further in direction of 382A to match with Core power.

The maximum GFX voltage is 1200mV for this card compared to 1175mV for regular 6900XT.
View attachment 197422

The frequency slider here can go up to 4GHz.
I am pretty sure, I will never be able to reach that frequency.
View attachment 197424


I am hesitating at the moment to push the card to it limits.
I have suspicion that the ESD shock that killed my 6800XT could also have affected the PSU.

The new card ran perfectly fine with these really high power setting on the same PSU, but I don't have a piece of mind and don't want to risk this high end card.
I am looking for a new 1200W supply. HX1200i is the one I own and would love to get same again but really difficult to get any Platinum rated 1200W supplies at the moment.

PowerColor recommends on their website a minimum of 900W power supply for this card.

I wonder if I could put Bios from your card on my Red Devil. I could get some stuff unlocked though.
There should not be any difference between the Ultimate and the regular Red Devil.

BTW, what TJmax you get with the liquid cooler?

 

[turbogear]

I wonder if I could put Bios from your card on my Red Devil. I could get some stuff unlocked though.
There should not be any difference between the Ultimate and the regular Red Devil.

BTW, what TJmax you get with the liquid cooler?

I don't think that you can flash the bios just like that without some modification. The new cards have a different ID, so I don't know if flashing the bios onto regular 6900XT could brick it.
These new cards are based on high binned XTXH silicon. In theory if you were lucky with your regular 6900XT and you have one of low leakage chips, it could also hit higher frequencies.

I suppose in future luck to get a regular high binned 6900XT Red Devils will become rare as most probably the best chips will be sorted out by AMD for the XTXH variants that are going to be launched soon by multiple partners.

I don't think you need new bios except if you want to push voltage towards 1200mV.
Did you try to OC your Red Devil?
If you are able to push it towards 2.8GHz with more power through MPT then yes it could make sense to unlock the higher frequencies otherwise it would not bring you any benefit.

At 2750MHz setting my card is far from 1200mV. The voltage goes in range of 1115mV when frequency peaks at 2700MHz. So mine does not need that high voltage.
That is why my first setting was 2750MHz@1175mV and it works stable without issues.
I did not try for example 2800MHz or higher. In that case maybe voltage will be in direction of 1175mV.
As I mentioned above, I am careful at the moment not to try too hard until I don't have a new power supply. Mine could have some damage due to ESD shock that killed my 6800XT.
I don't want to risk my expensive card at the moment.

For the TJmax, I saw max 84°C when the card was overclocked to 2750MHz@1175mV with 382W Core power.

 

[ratirt]

For the TJmax, I saw max 84°C when the card was overclocked to 2750MHz@1175mV with 382W Core power.

Nice. My card sometimes hit the 90+ range when loaded to the roof. I wanna get more fans in my chassis and bigger for that matter. I think better airflow will make some difference.
I still haven't tried the OC and currently I got the card undervolted to 1.1v @ 2400Mhz mem @2100Mhz seems OK.

 

[Felix123BU]

I don't think that you can flash the bios just like that without some modification. The new cards have a different ID, so I don't know if flashing the bios onto regular 6900XT could brick it.
These new cards are based on high binned XTXH silicon. In theory if you were lucky with your regular 6900XT and you have one of low leakage chips, it could also hit higher frequencies.

I suppose in future luck to get a regular high binned 6900XT Red Devils will become rare as most probably the best chips will be sorted out by AMD for the XTXH variants that are going to be launched soon by multiple partners.

I don't think you need new bios except if you want to push voltage towards 1200mV.
Did you try to OC your Red Devil?
If you are able to push it towards 2.8GHz with more power through MPT then yes it could make sense to unlock the higher frequencies otherwise it would not bring you any benefit.

At 2750MHz setting my card is far from 1200mV. The voltage goes in range of 1115mV when frequency peaks at 2700MHz. So mine does not need that high voltage.
That is why my first setting was 2750MHz@1175mV and it works stable without issues.
I did not try for example 2800MHz or higher. In that case maybe voltage will be in direction of 1175mV.
As I mentioned above, I am careful at the moment not to try too hard until I don't have a new power supply. Mine could have some damage due to ESD shock that killed my 6800XT.
I don't want to risk my expensive card at the moment.

For the TJmax, I saw max 84°C when the card was overclocked to 2750MHz@1175mV with 382W Core power.

One can use the -f argument to flash the bios, -f being "obey card, NOW!" and poof, if the bios is not super weird, you can flash an Asus bios to a Sapphire card and vice versa, but for these card being so elusive, its a small risk, and I say small because its basically impossible to fatally brick a card if you are not a complete noob

 

[turbogear]

One can use the -f argument to flash the bios, -f being "obey card, NOW!" and poof, if the bios is not super weird, you can flash an Asus bios to a Sapphire card and vice versa, but for these card being so elusive, its a small risk, and I say small because its basically impossible to fatally brick a card if you are not a complete noob

So TPU seems to have now released a flashing tool for those daring ones who want to experiment with flashing around bioses from other cards.

AMD VBFlash / ATI ATIFlash 3.15​

AMDVBFlash / ATI ATIFlash 5.0.567 Download

AMD AMDVBFlash is used to flash the graphics card BIOS. The version released by ATI was called ATIFlash or just WinFlash. It supports all AMD Radeo

www.techpowerup.com

3.15 (April 19th, 2021)​

• Adds support for AMD Radeon RX 6700 XT, RX 6800, RX 6800 XT, RX 6900 XT
• Adds AMDVBFlashDriverInstaller.exe, written by us at TPU, which lets you easily install/uninstall the AMD driver that's now required to execute flashing

 

[Outback Bronze]

6800XT OCed

Seems like the best value card no?

 

[Weleleh]

I have a Sapphire 6900XT Toxic LE, I have the Ultimate bios and the new AMDVBFLASH however there's no -f argument so can't force flash and end up getting mismatch ID.
Any idea?
My card has dual bios so not worried.

 

[turbogear]

I have a Sapphire 6900XT Toxic LE, I have the Ultimate bios and the new AMDVBFLASH however there's no -f argument so can't force flash and end up getting mismatch ID.
Any idea?
My card has dual bios so not worried.

That is what I was saying some posts back.
The Ultimate cards are having a new silicon version XTXH released from AMD with a new ID.
Sorry no idea how to force flash.
Maybe try to ask the creators of the tool at Techpowerup.

 

[Weleleh]

It's possible to flash via Linux apparently.
Having mismatche ID's doesn't mean anything we could always force flash. Also die stepping happened on RDNA too and it worked fine.
The only reason I see this not working on RDNA2 is due to some driver level checks done on Windows apparently.

 

[turbogear]

Seems like the best value card no?

Yes if you get a good sample that can OC very well.
This depends on silicon lottery.

 

[ChristTheGreat]

anyone knows how could I force constant voltage, so I can keep high GPU frequency, event if the game doesn't use the GPU at max? I guess by bios flashing with higher value?

Thing is, that I want to hav 2 profiles: one normal, the other one for gaming :/

 

[turbogear]

anyone knows how could I force constant voltage, so I can keep high GPU frequency, event if the game doesn't use the GPU at max? I guess by bios flashing with higher value?

Thing is, that I want to hav 2 profiles: one normal, the other one for gaming :/

I don't think there is a way to fix the voltage.
From my experimenting with multiple 6900XT and 6800XT cards, they don't hold voltage at one value all time but it is varying as GPU needs it based on the boost algorithms.
The slider in Radeon SW seems to be like kind of reference but card does whatever it wants.
For example in my 6800XT I had the slider at 1020mV for 2750MHz but GPU was jumping between 800mv up to 1110mV.

Editing bios to change different parameters is not yet possible for RDNA2 but even then I am not sure if fixed voltage for fixed frequency will be possible except if one can somehow disable the boost algorithms.