Hi,

I have an HD5970 with two internal GPUs and in windows 8 with catalyst 12.8, 12.10 or 12.11 (beta4) the second GPU is never used. Always at 0% usage. I used GPU-z to confirm that the 2 GPUs were enabled and they realy are, but for some unknown reason, 2nd GPU is never used. In windows 7, with 12.8, 12.10 or 12.11 drivers everything works perfect, with 2nd GPU working. I tried this with 3dmark 06, 3dmark Vantage, 3dmark 11, Crysis 2 and FIFA 13. One strange thing is that in windows 8 appears a new option in Catalyst (that doesnt exists in windows 7) to enable crossfire. I think the problem is here. Windows 8 or the Catalyst drivers are seen only one GPU and not a one card with two GPUs.

I would appreciate any help. I've tried everything with no sucess.

Regards,

Hugo

It might be a good idea to report this issue > http://www.amdsurveys.com/se.ashx?s=5A1E27D20B2F3F58

Intel I7 960 @ 3.87ghz *Intel DX58SO *HIS HD6970 2gb *Corsair TX650M *2x4gb Corsair XMS3 *WD Black 1TB *Windows 7 Home Premium 64bit *Gateway HD2401 24" 2ms 1920x1200  ***Asus N71Jq laptop *Intel I7 720QM Processor *Mobility Radeon HD5730 1gb *8gb Ram *Windows 7 64bit  ***Acer 5750 laptop

* A clear conscience is usually a sign of bad memory *

Thanks. I follow your sugestion. I also report a ticket to XFX, the brand of my card.

Regards,

Hugo