hello, I bought a video card MSI HD 6970 Lightning to supplement my machine that already has a HD 6970 XFX, but I can not do CROSSFIREX, the catalyst reports that a this disabled.
Why is this happening?
Please post your system specs, and check the PCIe speed in the Radeon settings / system / hardware tab for both GPUs.
I am a layman in these matters little how much more you simplify for me will be better
One of your cards isn't running at the correct PCIe speed for Crossfire to be operational, both PCIe slots would need to be x8 speed or higher. Check that your motherboard is actually capable of running a 2nd card at those speeds and that if it is you are using the correct 2nd PCIe slot.
I use this motherboard, and according to the specifications everything is ok
The manual for that motherboard says that the 2nd PCIe slot only runs at 4x speed and that it shares bandwidth with the PCIe x1 slot. In the motherboard Northbridge settings in the BIOS you have probably got it set auto for the 2nd PCIe x16 slot, set it to x4 mode and take anything out of the PCIe X1 slot if there is something in there. 4x speed may work but at reduced performance vs a PCIe slot working at 8x or 16x speed.
ok, let's say I can leave the two 4x but I try and I try and not think where this change and the worst eh I think I have done a lot of stupid things in my bios.
Would you help me?
obrservei the manual and it is written that there are two PCI-e 16x one of which has a gray version 4x I do not know what it it means .... help ..
Sorry but I am unsure what you mean? I already said that you would need to adjust the 2nd PCIe slot speed to 4x instead of Auto. It shows how to do that in the motherboard manual page 2-21 of the English manual (advanced / chipset section of the motherboard BIOS). If it doesn't work after that then your motherboard is too slow to support Crossfire cards without bridge cables and you would need to get a motherboard that has either 2 full PCIe 2.0 or PCIe 3.0 x16 slots which both run at least at 8x speed when both are used.
I found the choice really says 4x (force), marked this option but still no news, and the catalyst still says I have a disabled card.
I already did everything I could do, really I am a little sad about this CrossFireX the promise was to be something very simple but it became almost impossible for an average user like me
Please help me
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