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Adept I
Adept I

RX 6800 XT High Idle Memory Clock

Hi everyone,

 

as many others I'm currently experiencing the problem where my graphics card won't clock down the memory clock on the Desktop. I know that the problem has to do with my LG-GL 850 144Hz Monitor, as the Card clocks down as soon as i put it to 120Hz. The Internet and also this forum is full of people having the same problem, but there seems to be no fix incoming. The only solution i found for myself was using CRU, creating a custom resolution and using LCD-Standard values. The problem with that is, that its overclocking my monitor and also I'm loosing my 10 Bit Colordepth. I don't know why, but its not letting me change it back to 10 Bit again.

So AMD, is there any chance to get a fix for that with that brandnew graphics card? It would be very nice to not waste so much energy for nothing and keeping the card hot.

 

Thanks for any answers.

 

edit: So somehow i made my 10 Bit and lower Clock work with CRU Standardsettings, but the highest achievable Hz-Rate I'm getting with this is 137 Hz. Everything above that makes the Radeon Software change to 8 Bit. I guess it has something to do with bandwidth, but I have no idea of what? Anyone has an idea?

19 Replies
Adept I
Adept I

Re: RX 6800 XT High Idle Memory Clock

Same hardware combination here.  141.7Hz is as far as I can get without losing 10Bit. 

 

141.7.png

 

 

And managed to go 142 after a couple of tries

 

142.png

 

 

 

 

Adept II
Adept II

Re: RX 6800 XT High Idle Memory Clock

Same problem, like my previous 5700 xt issue Smiley Sad. My monitor is Benq Ex3202R (1440p 144hz)

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Adept I
Adept I

Re: RX 6800 XT High Idle Memory Clock

Same problem here with the RX 6800 XT. Close to 2000 Mhz Memory Clock at desktop idle.

Adept I
Adept I

Re: RX 6800 XT High Idle Memory Clock

Very interesting. Do you have an actual idea of what exactly you're doing there or is it just trial and error? I don't have any clue what these settings there are doing and I am a bit concerned, that with these settings the picture may get distorted or the monitor even get damaged.

Two Hz less would definitely be okay, but I'm not sure about my monitor. I just don't get what the problem with a low memory clock and just monitor standard timing would be. Smiley Sad

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Esteemed Contributor III

Re: RX 6800 XT High Idle Memory Clock

Make sure your Display setting is set to 144.

Screenshot_3.png

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Adept I
Adept I

Re: RX 6800 XT High Idle Memory Clock

I have exactly the same error. Running Dell S2721DGF at 1440p. Even at 60Hz it is still stuck at ~ 2000 MHz even on a single monitor.

Is there a simple solution to that if CRU does not work?

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Adept I
Adept I

Re: RX 6800 XT High Idle Memory Clock

What exactly do you mean? Of course it is set to 144Hz or what are you suggesting?

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Esteemed Contributor III

Re: RX 6800 XT High Idle Memory Clock


@gravyrizor wrote:

Hi everyone,

 

as many others I'm currently experiencing the problem where my graphics card won't clock down the memory clock on the Desktop. I know that the problem has to do with my LG-GL 850 144Hz Monitor, as the Card clocks down as soon as i put it to 120Hz. The Internet and also this forum is full of people having the same problem, but there seems to be no fix incoming. The only solution i found for myself was using CRU, creating a custom resolution and using LCD-Standard values. The problem with that is, that its overclocking my monitor and also I'm loosing my 10 Bit Colordepth. I don't know why, but its not letting me change it back to 10 Bit again.

So AMD, is there any chance to get a fix for that with that brandnew graphics card? It would be very nice to not waste so much energy for nothing and keeping the card hot.

 

Thanks for any answers.

 

edit: So somehow i made my 10 Bit and lower Clock work with CRU Standardsettings, but the highest achievable Hz-Rate I'm getting with this is 137 Hz. Everything above that makes the Radeon Software change to 8 Bit. I guess it has something to do with bandwidth, but I have no idea of what? Anyone has an idea?


I would highly suggest all of you with this issue report it using the Bug Report in Radeon Settings.

If you want two way support from AMD you can also report your issues here, this is good if they need to ask you questions as the bug report is just one way communication: https://www.amd.com/en/support/contact-email-form

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Adept I
Adept I

Re: RX 6800 XT High Idle Memory Clock

I have the same issue here.

Would really appreciate a fix. 
Reported this bug over the radeon Bug report tool.Screenshot 2020-12-08 201054.jpg

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