My Crossfire setup doesnt *appear* to be working

[philstanbridge]

I thought I'm best off starting my own thread rather than jumping in on others misfortune. I have just bought myself two 1900 cards and a board. I've got a Sapphire XT master, a MSI XTX slave and the new Asus A8R32-MVP (R580) motherboard.

Both cards work on their own, and both slots work on the motherboard. The 6.2 cats are installed and it recognises a crossfire setup. But when I run benchies (05) it would appear that only one card is working. Admittedly my test setup is only using a Venice 3000 on stock air, but even so, I'd expect better results. So what's happening here?

A single card in 05 at stock gets me the same score as two cards in crossfire mode so something aint working?

 

[philstanbridge]

Okay guys to update this thread today - I am installing my 4800 X2, just as soon as I can find a heatsink for it!

 

[philstanbridge]

Hi phil

In case you missed it, I was just asking what core and mem frequencies CCC was reporting to you.(

Hey mate I think it was reporting 500/600 or thereabouts but it only showed 1 card whereas I expected to see 2. I managed to get a little further last night, I finally got ATI tool to report the speeds correctly and could overclock the cards, but it didnt make a jot of difference to 05 - so I'm hoping this was down to the cpu. I'll report back with my findings.

 

[philstanbridge]

what were you scoring? A venice 3000 and 2xX1900 is a massively mismatched system.....

I know, it was the only cpu I had to hand and I thought what the hell..
I was hitting 8200 in 05 with everything maxed, ie AF x 16, AA x 6 etc etc.