cowie

oh....i get around the same with on or off mostly.
it helps keep the load temps down on dice with it off thuo

Alba

May as well join in.

3 x Sapphire 5870's, benching at 1050/1300 so far stock air.

eva2000

oooh congrats.... 1050/1300 volts used ?

Just installed 9.12 official drivers and did some stock W3570 speed runs @3200Mhz with HD5870 Tri-CF @850/1200





Installed a few more benchmarks

Using 20" BenQ 1600x1200 LCD Monitor so max res is 1600x1200



All DX11 Benches below @1024, 1280 and 1600 resolutions

Alba

1.275v, only 2 cards atm, 3rd will be here any day now, I'm hoping today

eva2000

Nice looks better than mine around 1.262v gets me 990mhz on GPU with normal scores, with same volts 1000mhz = lower scores. Haven't tried beyond 1000mhz GPU 1.312v yet. I'm slowly testing increments against the sub test scores to ensure there's adequate volts for the clocks to give normal increased scores

Alba

Tried 950 at stock volts but it locked up, but maybe that was coz I left the fan on auto, don't know.

At 1050 I set the fan to 70% in CCC to make sure they don't cook.




These cards don't scale nearly as well as the 4890's.
For eg. CPU at the same clocks in 3DM06

4890 @ 1050/1150
5870 @ 1050/1300

1 x 4890= 21k
2 x 4890= 30k

1 x 5870= 28k
2 x 5870= 31k

youngpro

its not that they dont scale, its there is a cpu bottleneck, if you throw more cpu power at it, you will see them keep scaling for a while yet!

fact is 3dmark06 is like 3dmark05 now, the power we have in our gpus, its totally a cpu based benchmark, if you throw alot of cpu power at your gpu tests (cpu test doesnt matter) you will see the framerates keep going up... single card is not as bottlenecked, thats why you see the dramatic increase from 4890 to 5870

oh yeah if you want to really compare gpu vs gpu, try vantage xtreme with a cpu at 4.5 or something... thought ive been hearing now even vantage x is starting to cpu bottleneck with 4 5870s or 2 5970s...

Alba

That's sounds logical.
In a way, todays high end GPU are far ahead of high end CPU's, would you agree that that's the case?

This is with i7 950 @ 4GHz and 2 x 5870's at stock