Hello, I recently picked up a second Sapphire HD5770 and am running it in crossfire. When I check the ATI Overdrive section it states my second card's GPU Clock @ 399mhz - half the speed of the supposed clock.
I loaded CPU-z and it reports the same clock speeds.
I am running an ASUS p5Q-E motherboard - so both cards are capped @ 8x PCI - but from what i've read that makes a 2-5% difference from the 16x slots.
My 3dMark Vantage Score is around 12-13 for GPU score.
8GB OCZ DDR2 Ram
ASUS p5Q-E MB / Q9300 Yorkfield
2 x Sapphire HD5770 Vapor-X Crossfired
850W Antec TruePower Quattro PS
What gives with the low(er) GPU score and odd GPU core readouts?