Originally Posted by candy_van
The smoothness (or stutter) issue you're describing is more driver related.
It's an issue that exists w. 12.11 Betas / 13.1s and should be corrected w/ 13.2s when officially released (not that current beta).
That 7870 likely has a bunch of headroom even w/ stock volts.
YMMV of course, but a lot of people are able to hit 1200MHz on the core w/o any kinda of bump.
I Think I am running the 12.11 I'll try the 13.1 soon, the lack of smoothness with 7870 while FPS is good (60 ) is comparable to the effect of 6970 game play with high resolution game capture through manycam (desktop live streaming chat software) , disappears when the second monitor is not active, and most of the times is neglige able after a system reboot. Maybe due to heat as 7870 or 6970 get 10 degrees Celsius temp rise when hooked to dual display.
And yes 7870 hits easily 1200 MHz core clock especially when hooked to a single monitor and with the Vram at default clock : I managed to get a relatively stable 1200/1450 Core /Vram on single monitor 20 mVolts bump and maximum cooling (fan at 100% ) maximum temp = 52 degrees.
stable on dual display @ 1188/1444 max temp 52 , stable with crysis2 at 1155/1444.
I m a sure the card could do a lot better with good cooling I agree with you as I have a tiny inWin buc PC case(that I am keeping because of the x4 sata hot swap feature) with overclocked CPU etc and tough to cool.