Different clock speed with two monitors?

Is it correct that 5870 with 2 monitors connected have different idle clock? Because my idle clock is 400/1200, but i think it where around 150/300 or something with only one monitor. Also it seems kinda bugged as in UVD mode (DXVA in MPC HC for example), the clock gets "underclocked" from idle(400/1200) to 400/900.

 

Not a bug but a feature/fix/workaround.
When 2 or more displays/monitors are connected, the clocks rise to fix flickering.
I think this was introduced in 10.4 drivers.

 

Word to the wise, the flickering came back with my 1090T installation

Default clocks or overclocks, opening a page with video like Youtube and running a video causes a flicker both when the video starts, and when I close the browser with a video on it

Not just me has reported it, but other people on Overclocking.net too with the 10XXT line

Clocks are back to their little game of going from 400/1000 to 150/300 and back again like lightspeed, maybe 1/60th of a second of the refresh rate

 

Ah i see, thanks.

Anyway there is flickering here as well, when going from idle to UVD for example, as it underclock you see the flicker on both screen

 

I think the only way to fix that problem is that ATi release a new BIOS.
Or that the card assemblers fix the BIOS by their own.