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Jumping clocks with my RX 480 on Win7 64 Desktop and Crimson 16.7.3

Question asked by bad_sign on Jul 29, 2016
Latest reply on Aug 2, 2016 by bad_sign

My system: Win7 pro 64, i5 3570k@3.9 GHz, 16 GB DDR3 1866, AsRock Z77 Extreme 4,

XFX RX 480 8GB OC Black Edition (already installed Accelero Xtreme 4 on it) @ Crimson 16.7.3

Samsung U28D590D (DP, UHD)(on 480), Samsung BW2433 LW (DVI, FHD)(on iGPU HD3000)

 

 

i noticed some strange gpuclock jumps. I'm on desktop only radeon setting open nothing else. gpu is most of the time not in idle mode and ram has also a strange behavior.

gpu jumps between 300 and 1290 MHz, ram between 300 and 2000 MHz

my power meter jumps between 140watt and 210 watt (whole system with screens)

 

why isnt the gpu in idle all it has to do is to refresh the screen(s)

now i forced the gpu to 300 MHz with global wattman but i cant do anything against the ramclock :/

even with youtube 4k video the gpu is at 25% load with 300MHz

 

without crimsons clock timeline fps, frametime went down to 0 but gpu still jumps like before

 

 

 

Picture description:

FPS

Frametime

GPU1 Load (my RX 480)

GPU1 Coreclock (jumping between 300 and 1290 MHz)

GPU1 Memoryclock (jumping between 300 and 2000 MHz)

GPU1 Memoryload (~500mb stable)

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