The RX 6000 series Owners' Club

[Space Lynx]

That game is crazily demanding.

or badly coded.

 

[turbogear]

I didn't try much yet. I've got no time. Just simple benchmarks etc.
The problem with all 6000 series cards is the power limit. it is locked and thus you can't go crazy with it but I plan to check. Maybe over the weekend. I need to get a good benchmark that would leave the cpu alone and just get the card maxed out. Maybe some benchmarks at 4k. My 2700x at 1080p can't keep up with the 6900xt.

In theory your card is able to deliver 525W with 3×8pin connector compare to mine where limit is 375W because of only 2x8pin, but if it is locked and not allowed to go that high then it is a pity.

3x8pin connector is then kind of useless until somebody modes the bios.

 

[ratirt]

In theory your card is able to deliver 525W with 3×8pin connector compare to mine where limit is 375W because of only 2x8pin, but if it is locked and not allowed to go that high then it is a pity.

3x8pin connector is then kind of useless until somebody modes the bios.

I will have to try it out t some point but I'm worried my PSU is not enough.

 

[kapone32]

I didn't try much yet. I've got no time. Just simple benchmarks etc.
The problem with all 6000 series cards is the power limit. it is locked and thus you can't go crazy with it but I plan to check. Maybe over the weekend. I need to get a good benchmark that would leave the cpu alone and just get the card maxed out. Maybe some benchmarks at 4k. My 2700x at 1080p can't keep up with the 6900xt.

The 2700x has the same chips as the 2920X. Based on my own testing with a 2920X vs a 5600X meant that I was leaving up to 60% performance on the table. As an example the TWWH2 battle benchmark brought back 102 FPS @1440p high with the 2920X and 157 FPS @1440P high using the 5600X. Having said that the 6900XT is about 15% faster than my 6800XT. I wish Asus would get off their butts and release a BARS support BIOS for my X399 STrix. I have said it before but I would really like to see how HBM works with BAR.

 

[turbogear]

I will have to try it out t some point but I'm worried my PSU is not enough.

Yes Corsair 760W supply that your specs show could be not enough.
I own 1200W Corsair HX1200i which is platinum certified.

I have a lot of other stuff in my PC like 4 HDDs extra raid Controller, 8 fans, lighting and Laing DDC 18W pump.

In any case it does not help always to throw more power at GPU.
Depending on ASIC quality at some point your burning power with very little extra performance.

For me the sweet spot is what I mentioned in previous posts. Increasing more TDC and GPU power brings only little higher performance which is also not stable.
My GPU reaches it voltage limit at around 2.7GHz setting.

 

[Athlonite]

I really need to get some time to look at this stuff. I havent noticed anything so far but I keep forgetting. I'm getting a new monitor soon (damn hope it will arrive) and I need to double check that with FreeSync Premium.
BTW. I tried CP2077 yesterday and damn, at some point I got 20FPS 60FPS is spot on hehe. That game is crazily demanding.

what res are you playing at and have you tried the Fidelity FX Dynamic setting try 90% to 100% and also turn of motion blur it's a frame rate vampire

 

[ratirt]

what res are you playing at and have you tried the Fidelity FX Dynamic setting try 90% to 100% and also turn of motion blur it's a frame rate vampire

I play at 4k. Haven't tried the motion blur but fidelityFX I did. 80 to 100. It does depend where you at in the game and so the FPS drops. Noticed that whenever I run in game the FPS drops. I think it might have something to do with the motion blur.

 

[turbogear]

Having said that the 6900XT is about 15% faster than my 6800XT.

I wonder why you say 6900XT is 15% faster than 6800XT.
According to TPU review it is at most 9% faster than 6800XT.

AMD Radeon RX 6900 XT Review - The Biggest Big Navi

AMD's Radeon RX 6900 XT offers convincing 4K gaming performance, yet stays below 300 W. Thanks to this impressive efficiency, the card is almost whisper-quiet, quieter than any RTX 3090 we've ever tested. In our review, we not only benchmark the RX 6900 XT on Intel, but also on Zen 3, with fast...

www.techpowerup.com

With my overclocked 6800XT it is actually faster than reference non overclocked 6900XT.

 

[fec32a4de]

C'mon, guys, surely there're more than two RX 6000 series owners here.....

Thanks to my bro, I finally got this gem. It constantly boosts to 2500Mhz and that's not listed anywhere, not sure if that's normal. Temp,etc are all fine when it is boosting.

 

[Athlonite]

Thanks to my bro, I finally got this gem. It constantly boosts to 2500Mhz and that's not listed anywhere, not sure if that's normal. Temp,etc are all fine when it is boosting.

As long as temps and power consumption are under control the boosting to those speeds should be the norm

 

[kapone32]

I wonder why you say 6900XT is 15% faster than 6800XT.
According to TPU review it is at most 9% faster than 6800XT.

AMD Radeon RX 6900 XT Review - The Biggest Big Navi

AMD's Radeon RX 6900 XT offers convincing 4K gaming performance, yet stays below 300 W. Thanks to this impressive efficiency, the card is almost whisper-quiet, quieter than any RTX 3090 we've ever tested. In our review, we not only benchmark the RX 6900 XT on Intel, but also on Zen 3, with fast...

www.techpowerup.com

With my overclocked 6800XT it is actually faster than reference non overclocked 6900XT.

I took that information from all of the reviews I have watched and factoring SAM into the equation.

 

[ratirt]

I've noticed something weird. My 6900xt default settings for vcore is 1175mv. That's like wen you OC you bump the voltage. I need to definitely lower it. For now I got it working at 1.1v but I think I can go lower. I might try OC but i won't get to far with my current PSU. Problem is, there isn't a lot of PSUs for purchase at any store I've checked 850 is a minimum and those are nowhere to be found either.

 

[turbogear]

I've noticed something weird. My 6900xt default settings for vcore is 1175mv. That's like wen you OC you bump the voltage. I need to definitely lower it. For now I got it working at 1.1v but I think I can go lower. I might try OC but i won't get to far with my current PSU. Problem is, there isn't a lot of PSUs for purchase at any store I've checked 850 is a minimum and those are nowhere to be found either.

1175mV is the stock voltage for 6900XT and 1150mV is the default for 6800XT.
These values are fixed and at the moment it is also not possible to increase further by tools like MPT.
Increasing this will send the GPU into safe mode and lock the clock at 500MHz.

When you change the settings in the Radeon Software by decreasing the voltage, you are changing the boosting behavior.
If you track the voltage by logging for example with HWiNFO, you will see it goes higher than what you set it to, but if you can lower the voltage in Radeon settings you can boost higher.

I have my 6800XT set at 2650MHz@970mV and in HWiNFO I see the card going to 1100mV with frequency boosting to 2600MHz.
With default settings the boost hits 1150mV limit much faster and frequency cannot go that high within the same power consumption limits.

If you really want to limit the max boost voltage allowed then you need to reduce this in the MPT. Doing this could reduces power consumption for same frequencies.
Some people are able to limit this value to around 1070mV for 6800XT and still reach frequencies in range of 2600MHz.
My card does not like this, especially if I push the frequency that high as I am doing.
The GPU is unstable if I change it to lower than 1130mV on my card.

 

[kapone32]

1175mV is the stock voltage for 6900XT and 1150mV is the default for 6800XT.
These values are fixed and at the moment it is also not possible to increase further by tools like MPT.
Increasing this will send the GPU into safe mode and lock the clock at 500MHz.

When you change the settings in the Radeon Software by decreasing the voltage, you are changing the boosting behavior.
If you track the voltage by logging for example with HWiNFO, you will see it goes higher than what you set it to, but if you can lower the voltage in Radeon settings you can boost higher.

I have my 6800XT set at 2650MHz@970mV and in HWiNFO I see the card going to 1100mV with frequency boosting to 2600MHz.
With default settings the boost hits 1150mV limit much faster and frequency cannot go that high within the same power consumption limits.

If you really want to limit the max boost voltage allowed then you need to reduce this in the MPT. Doing this could reduces power consumption for same frequencies.
Some people are able to limit this value to around 1070mV for 6800XT and still reach frequencies in range of 2600MHz.
My card does not like this, especially if I push the frequency that high as I am doing.
The GPU is unstable if I change it to lower than 1130mV on my card.

View attachment 188071

I am going to try this

 

[turbogear]

I am going to try this

In case you have not used MPT before and want to read more about it before trying something, here is a good article at Igor's Lab about using MPT:
https://www.igorslab.de/en/the-grea...ith-big-navi-and-the-morepower-tool-practice/

 

[Felix123BU]

For Nitro+ 6800XT you have GPU power limit set to 290W by default compared to 255W on reference design card.
This mean when you apply 15% powerlimit you allow 332.35W to GPU core. You need to add to that around 45W for the other components of the GPU which means you have a total of around 377W.
This is close to the limit of what 2×8pin and PCIe slot can supply a combination of 375W. You are driving your card on it's limits.

Maybe you need further tuning. I thought Nitro+ can achieve better results than reference cards with respect to overclock and under volt.

A good air circulation hopefully will help with the temperatures.
I have Cooler Master Cosmos C700P which provides a lot of air flow with 2 fans at bottom for air suck in and 6 fans on radiators that push the air out.
Before I went water cooling for 6800XT, my temperatures were 67°C and junction 90°C max under stress tests. At that time, I had modified fan curve to go to 100% fan speed relatively fast.

I have water cooled setup now. The 6800XT has maximum 47°C and Junction of 67°C in stress tests but Junction temperature in games is around 54°C.

I have reference XFX 6800XT and I use 275W for GPU core and 305A TDC applied by using MPT additionally I have 15% power limit in Wattman.
This means the GPU core is allowed to take 316.25W and total GPU power is around 361W.
I am able to achieve 2580-2612MHz clock in games like Assassin's Creed Valhalla.

My setting in Wattman are 2650MHz@970mV.
These are my settings for daily gaming and not just to achieve highest score for short Benchmark.
I am achieving a score of 19376 in Time Spy with this.

So far very stable in all games that I recently played (Borderland 3, Assassin's Creed Valhalla, Cyberpunk).


Mine does not like VRAM overclock though. Even 50MHz increase on MCLK causes crashes in benchmarks. Maybe it has to do with SAM. I have not tried it without SAM.

Are those Alphacool parts for the loop? I have something very similar coming next week

 

[turbogear]

Are those Alphacool parts for the loop? I have something very similar coming next week

No my loop consists mainly of EK components (rads, fans, tubing, reservoir and pump combi).
6800XT block is also from EK.
The CPU block is from XSPC as well as the liquid used in the loop.
I have Aquacomputer MPS which is loop flow and temperature measurement sensor.
I have also Aquacomputer filter in the loop that has two valves that helps when opening the loop so that liquid does not flow out from both ends of the loop.
Only a few of the fittings in the loop are from Alphacool.

I have been into watercooling since 2014.

 

[ratirt]

1175mV is the stock voltage for 6900XT and 1150mV is the default for 6800XT.

I thought it is a bit lower than that but I guess I must have missed something.

 

[Felix123BU]

No my loop consists mainly of EK components (rads, fans, tubing, reservoir and pump combi).
6800XT block is also from EK.
The CPU block is from XSPC as well as the liquid used in the loop.
I have Aquacomputer MPS which is loop flow and temperature measurement sensor.
I have also Aquacomputer filter in the loop that has two valves that helps when opening the loop so that liquid does not flow out from both ends of the loop.
Only a few of the fittings in the loop are from Alphacool.

I have been into watercooling since 2014.

I see, well, for me its my first full loop, so all look the same from a distance, but I shall get pro soon enough....before breaking stuff at the first try

 

[turbogear]

I see, well, for me its my first full loop, so all look the same from a distance, but I shall get pro soon enough....before breaking stuff at the first try

Youtube is a good friend when building stuff for the first time.
It helped me a lot when last summer I built my own expensive Cross bike by buying all separate components and putting them together without breaking anything.

 

[Felix123BU]

Youtube is a good friend when building stuff for the first time.
It helped me a lot when last summer I built my own expensive Cross bike by buying all separate components and putting them together without breaking anything.

yup, from a theory point of view I'm all set, watched vids, read articles etc. Really hyped. Did everything there was to do with a PC, full water loop is the only thing I have not done, and I have a lot of crazy mods on record regarding cooling, but I am really hyped to see how my 6800 XT, and the whole system hums along under water Was not as impressed by a GPU since I got the ATI 4870 in 2008, but this 6800 XT blew me away, I really want to play around with it under optimal conditions

 

[turbogear]

yup, from a theory point of view I'm all set, watched vids, read articles etc. Really hyped. Did everything there was to do with a PC, full water loop is the only thing I have not done, and I have a lot of crazy mods on record regarding cooling, but I am really hyped to see how my 6800 XT, and the whole system hums along under water Was not as impressed by a GPU since I got the ATI 4870 in 2008, but this 6800 XT blew me away, I really want to play around with it under optimal conditions

Looking forward to see your setup in action when you have it completed.

Just for curiosity which high static pressure fans did you order?
I am using EK Vardar.
How many radiator do you plan to use?
I have three 1x120mm, 1x240mm and 1x360mm.
I use the EK medium thick radiators (PE) because there is no place in my case for push pull configuration. Thick radiator (XE ) need push pull for optimum cooling.

For thermal past, I am using Thermal Grizzly Kryonaut.
I was thinking to buy the Kryonaut Extreme but in November when I built my 6800XT block only the big 33.84g package was available for ~87€. Now 2g is also available but still for 20€.

Indeed 6800XT is a great card. I have been with red team since the days of 4870. All my previous cards were since then Radeons.

 

[Felix123BU]

Looking forward to see your setup in action when you have it completed.

Just for curiosity which high static pressure fans did you order?
I am using EK Vardar.
How many radiator do you plan to use?
I have three 1x120mm, 1x240mm and 1x360mm.
I use the EK medium thick radiators (PE) because there is no place in my case for push pull configuration. Thick radiator (XE ) need push pull for optimum cooling.

For thermal past, I am using Thermal Grizzly Kryonaut.
I was thinking to buy the Kryonaut Extreme but in November when I built my 6800XT block only the big 33.84g package was available for ~87€. Now 2g is also available but still for 20€.

Indeed 6800XT is a great card. I have been with red team since the days of 4870. All my previous cards were since then Radeons.

I am getting the loop mainly for the 6800 XT, but also to try full loop cooling.

As for fans, have a couple of Noctua P12's, they are really good on the current AIO, have a couple of Noctua P14 redux 1500rpm, another couple of Noctua A14 industrial 2000 rmp, will see which ones are the best combo, but want to fit the P12s on the 2x280mm radiators, 30mm thickness, thicker ones wont really fit in the current case. Fans will be push only.

The 6800 XT will get the Eisblock Aurora Acryl GPX-A Radeon RX 6800XT block, and the 5800X will get the Alphacool Eisblock XPX block.
One thing I am not sure if I made the best choice is the pump, its a DC-LT 2600 rpm small pump. But in case I am not pleased, will probably get a stronger one. Wanted it to be quiet mainly, so in 2-3 days will see how it goes. For pastes. have a lot lying around, will probably choose between the Thermal Grizzly Kryonaut or the Gelid GC Extreme, both have had great results on GPUs.

And I have also been Radeon only since the 4870, whenever there was time for an upgrade, the best choices keeping in mind price/performance/longevity was always a Radeon card, though I wanted to give Nvidia a chance with the 3080, but there still is none to be found.

Was more than happy to get a 6800 XT on launch day Will post pics when the new setup is complete, and hopefully the result will be

 

[xenosys]

New poster, and proud owner of a new 6800XT! Just up picked a Power Color Reference model last week. Had to pay £100 over the MSRP to secure it but well worth it in the end once I got it home, put it under water and started running some benchmarks.

I bought myself an EK Quantum-Vector Water Block and installed it a few days ago as well, and put it on a custom loop with a couple of EK 360mm Radiators (1 x PE and 1 x XE) to cool both the CPU and GPU.

On idle, I'm around 30 degrees and on full load during a Port Royale/Time Spy stress test, I'm around 54-55 degrees with a Junction Temp. of around 70 after an hour of looping. During gaming, I'm usually around 50/66-67 respectively.

During a TimeSpy bench, I was hitting a graphics score of 20329 just by tinkering with the Radeon software and under volting. Setting my core clock slider between 2600-2700mhz, 960mv, and 2110mhz Fast Timings on the memory. It would stay at a consistent 2620-2620mhz on benches. When setting the "auto overclock" feature on the software, it would set it as 2508mhz automatically, so I knew immediately I had a pretty good card on my hands.

I think tinkered around a bit more with MPT (More Power Tool) and increased the total wattage output on the card from 300w to 340w, and managed to get it benchmarkable on the slider between 2690-2790mhz and outputting around 2740mhz whilst increasing the voltage to 1085mv. I did manage to then score 20900+ on TimeSpy (screenshot attached) but for some reason I had an issue with System Mark so couldn't validate the score. It wasn't stable though.

Then, put it back down to 2655-2755 on the slider and scored a 20650. This was the most stable I've managed to get it since.

All in all, I must have lucked out with the silicon lottery to pick up a card that decent on OC'ing, so I'm quite happy to have paid the extra £100 for it in hindsight.

 

[turbogear]

One thing I am not sure if I made the best choice is the pump, its a DC-LT 2600 rpm small pump. But in case I am not pleased, will probably get a stronger one. Wanted it to be quiet mainly, so in 2-3 days will see how it goes.

I am using EK-DDC 3.2 PWM pump. EK branded Laing with extra EK heat sink mounted at the bottom to help with cooling of the motor and prolong the life of it.

I have the PWM from DDC connected to my ASUS Crosshair VIII hero CPU fan port.
I have in AI Suite a profile to control the speed of cooling fans and pump depending on CPU temperatures.
When doing normal office stuff like surfing, the loop is quiet and ramp up higher when gaming.
I allow it ramp up quite high while gaming, producing more noise but optimum temperatures.
I game in any case with headset so it does not disturb much.

One thing that I noticed after I went water cooling with 6800XT reference card is that there is significant coil whine.
With original cooler it was hidden behind the noise of cooler but the Vardar fans from cooling loop don't make that high noise and I hear it always if I run some 3D task like Time Spy whie not wearing headset.