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how to crossfire two 3870

I'm having the same problems with an Asus P5E, everything's connected as it should be, bios settings are right and all the drivers are OK. Crossfire is enabled in Catalyst but GPUz and 3DMark show it as disabled and I'm getting ~11k in 3DMark so something's not right.
 
OK, I have now had access to PC.
This PC is now running fine (on the surface that is).
The latest bios seems to have a problem (F7). But all previous deall with the ATI drivers well.
The mobo (Gigabyte X38-DQ6) bios has little for graphics card.
PCI - Default, PEG - PCI 1 slot gets seen 1st, PEG2 - PCI 2 slot gets seen 1st.
Have tried all three settings.
Basically ATI CCC says crossfire is enabled. Yet only one card shows up (this maybe correct - I have no idea).
In other s/w the link shows as 'not connected' or 'enabled = false'.
WEI does not register any performance rating for card. Hence WEI of 1.
Have tried single & double bridge, with no difference shown.
On a clean install. (Everything - total HD format).
On loading the latest ATI drivers. 1st run of CCC showed crossfire enabled by default.
Yet everything else implies a problem.
OS is Vista Ultimate 64 bit.
 
Well after another total format.
The 'hotfix' along with dotnet3.5 seems to have done it.
Thanks to all. :cool:
Some progs still say (inc 3DMark) that crosfire isn't enabled.
But some do.
Everest (see attached)& ATI CCC (see previous post #3).

WEI has now updated.
 
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