This is definitely not the normal behavior of AMD graphics cards, the above method results in a decrease in memory clock speed at 144 Hz.
On my RX580 I also dropped to 300MHz
Just confirming what everyone else is seeing. And reporting my own issue. I have a Gigabyte 5700XT Gaming OC. I am using the latest driver 19.11.3.
I run a dual monitor setup. 32" 4K 60Hz refresh rate + 27" 2K 60Hz refresh rate. MCLK is stuck at 875MHZ. The GPU temperature at idle is between 50-60C. The fan spins off and on to bring is to the low 50s or if am lucky down to 49.
When using either monitor at single monitor setup, the MCLK drops to 100-300mhz. However, temperature stays 50-55C. The fan does not spin at all, so the idle temperatures stays above 50.
Curiously when I am gaming in 4K 60Hz, temperature ranges 70-75C, which is quite good. But for whatever reason the idle temperature could never go down to the low 40C even with a single monitory setup.
It seems like there is an issue with the driver which causes the MCLK to get suck at maximum. But still high idle temperature (50C +) even when MCLK drops to 100Mhz? Maybe there is a problem with my card.
There is no problem with your card. All the cards behave this way when using a dual monitor setup or single monitor with 144Hz refresh rate.
The official response from the software engineering team is that this is the expected behavior and I think this this is bulls@#$.
I don't even have words to express my disappointment, never gonna buy a gpu again in the first month the reviews were all pointless none saw this problems none are talking about them, they are probably using rtx cards and don't care about amd they just test them in a few games and that's why they miss all the problems that come with using them everyday or they are just plain stupid and don't see high mem clocks and high temps at idle.
Techpowerup tests multi-monitor power usage but you're right, most reviews are worthless, they just bench tomb raider and far cry and call it a day. None of them tested the AA modes to see if they worked (they don't), none of them mentioned that display scaling and VSR was completely broken (now fixed), etc.
My card doesnt downclock memory even after disconnecting second monitor and lowering refresh rate to 100hz or 60 hz. So yeah unless so called expected behavior is idling at 60w+ they just ignoring it. As lets be honest there are still more concerning bugs 5 months after release.Funny thing is nvidia used to have same problem in 2015 and fixed it with driver update causing all my freesync monitors to run at 143hz ever since.(gtx 980,1080 or rtx 2080)
Yeah also having two monitors connected seems to max out the memory clock...I also tried to put refresh rate of my monitor to 143Hz with CRU but it didn't work, the screen goes black....also tried from the radeon settings with custom resolution but that says something about custom resolution not supported. Probably i'm a noob and don't know how to input all the correct timings and values. But than again i shouldn't know all these things, AMD is supposed to make it work.
you can change it yourself through the DDU program,yes this is the same problem as NVIDIA had, but now win10 forces everything by itself, the problem disappears when I bought the latest monitor and with drivers from this year
Any news from driver engineering team?
My sapphire rx5700xt nitro+ memory is stuck at 875mhz on all refresh rates. (144hz,120hz or 60hz) with acer ed323qurabipx.
I tried custom refresh rates as well,no change.However i found out that if i run 1, 2 or 3 monitors at 1080p @ 60hz memory will downclock to 200mhz. But if run native 1440p even with one monitor memory will never downclock no matter what refresh rate.