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Drivers & Software

slimbig
Journeyman III
Journeyman III

Memory Clock Gets Maxed Out On Dual Monitors

Update:

On Crimson Edition 16.5.2.1 Hotfix problem is still there

Hi

When I extend desktop to my secondary monitor the memory clock gets maxed out and stays there at 1450 MHz it will not go down unless I switch to single display, this result in serious card heating problem, it idles at 75c

My system information:

Driver:            Crimson 16.4.1 (cleanly installed)

OS:                 Windows 8.1 x64

Card:              Sapphire R9 380 Nitro

Display 1:       Benq XL2730Z      running at 144 Hz connected to DP

Display 2:       Asus VX23H          running at 60 Hz connected to HDMI

Further details to eliminate the back and forth Q and A

- It does not matter what resolution FHD/QHD I set or refresh rate I set if it's 60, 100, 120 or 144 as long as I extend desktop to secondary monitor the memory clock goes up and stays up at 1450 it directly goes to the value set at the over-drive while idle

- If I switch to single display (does not matter which monitor of the two) memory clock drops to 150 MHz as it supposed to

- Tested Crimson16.3.2 and got the same results

- I only install drivers after fully uninstalling the old one then running DDU in safe mode to make sure all traces were removed so the driver installation process is not questioned here

- The only scenario where I don't get the memory clock problem is when I connect both monitors by DVI which is not a solution since I will be stuck at 1080p resolution and 60 Hz refresh rate (the Benq monitor is QHD / Free sync / 144 Hz) so you know why not

- To save your time I have done all possible tests under my system, mixed monitor connection interfaces and reached the following conclusion/driver bug

>>> If you connect two monitors to an R9 380 and use DP or HDMI at QHD resolution on one of them you will get the memory clock constant maxing out while card is idle and high idle temperate issue <<<

A response and a fix from AMD would be appreciated

Thank you

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4 Replies
berble
Adept I
Adept I

Re: Crimson 16.4.1 Driver Bug - Memory Clock Gets Maxed Out On Dual Monitors

I have to admit that i i'm running 16.3.2 drivers until it was released and i haven't noticed, but my memory clock is also maxed for no reason (1200MHz)

Here is my system.:

Driver:            Crimson 16.3.2

OS:                 Windows 10 x64

Card:              Gigabyte hd7870 (GV-R787OC-2GD)

Display 1:       Iiyama Prolite E2208HDS           1920x1080 60hz, connected via dvi

Display 2:       Samsung SyncMaster 2232BW      1680x1050 60hz, dvi to hdmi cable

At least my card's temperature is ok, below 40 degrees on both core and vram. I hope it will be fixed soon.

conners
Adept II
Adept II

Re: Crimson 16.4.1 Driver Bug - Memory Clock Gets Maxed Out On Dual Monitors

I think you answered your own question.

"The only scenario where I don't get the memory clock problem is when I connect both monitors by DVI which is not a solution since I will be stuck at 1080p resolution and 60 Hz refresh rate (the Benq monitor is QHD / Free sync / 144 Hz) so you know why not"

I would venture to say that you monitors Hz difference is the problem. But hey who am I to tell your arrogant (narcissistic) self anything?

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slimbig
Journeyman III
Journeyman III

Re: Crimson 16.4.1 Driver Bug - Memory Clock Gets Maxed Out On Dual Monitors

Do you even?

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wolf_walker
Adept I
Adept I

Re: Memory Clock Gets Maxed Out On Dual Monitors

Amusingly, I had this problem years ago (as far back as this original thread likely) with a 290x, and I have this same problem with a 5700xt today in 2019.  Oi...

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