GPU + Mem load and temp in extended desktop

Hi all,

I am having problems with my extended desktop.

When I run an extended desktop on my 150EM / radeon 6970m my core and memory MHz turn to 250 / 900 and a voltage of 0.95v, heating up to 75 degrees celcius and turning up the fan speed. Is this normal?

When I switch back to one display monitor or notebook screen it goes back to normal 100 mhz / 150 mhz at 0.9v and only going up when I actually require load.

Hope someone can help me understand how to make the extended desktop work the same as one screen.

Thanks

 

naturally, firing two desktops requires more power of ur gpu than just with one since ure essentially talking two displays here. u could of course use tools like msi afterburner or amd overdrive to force ur clocks to idle, but no idea in how far that would affect ur performance

Sent from my Galaxy Nexus using Tapatalk 2

 

I don't quite understand how outputting to two monitors would put THAT much load on the GPU; the monitors have their own power source, after all.

How are you connecting your external desktop?

 

i dont think its cuz of the actual load. more like that the gpus drivers/vbios automatically switches to 2D load clocks once it detects more than one connected display. same goes for nvidia cards. workaround there was to manually force idle clocks with nvidia inspector.

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Hi both,

thanks for replying.

I connect the monitor through HDMI cable. Ill try a Dvi cable tomorrow.

 

It's not just the cores but the bandwidth to drive both displays and to ensure smooth playback and acceleration the clocks have to go up.

 

what's the resolution of your external display? mine that i have connected to my 9150 is WUXGA (1920 ×1200) and it doesn't trigger optimus/"fire" the dGPU (670m) connected either DVI or HDMI. i agree with prostar that running extended display alone shouldn't put so much of load on the hd4000 that it triggers your 6970m. (i don't think it has that much to do with power though. i mean yea, a powered peripheral might consume slightly less resources than it otherwise would if it was unpowered, but aren't we primarily talking about load here?)