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2 x ASUS HD6950s unlocked to 6970 and running at 950/1450. According to GPU-Z both cards are running at 8x PCI-E 1.0 (so presumably 4x PCI-E 2.0 equivalent?).
That's all my motherboard supports.I get 74.3 FPS and 1871 score @ 900Mhz core / 1400MHz memory at the same settings. So that seems a little low... this is with a 980X though so it could be because you have a Core 2 Duo but Heaven dont seem that CPU heavy so i'd expect atleast 70 FPS.. Do you know why the cards are running at 8x PCI-E 1.0? i think it's because of that.
@ jaaye - have you tried increasing the voltage? Or underclocking RAM to get 880MHz core?
ok so.
got the cards today( HIS 6950). fitted with difficulty they are massive.
put the card in. pushed flash WIN using the BAT file, put the slider on 20% overclocked to 880 / 1375 and success no artifacts and i got
heaven 2579
my 5850 crossfire got 1309 huge improvement
What case is that martynpd? Looks sweet.