Hi,
I’ve recently got ATI Radeon 5970 and I tried to run some of my OpenGL programs in crossfire mode. I was disappointed when it came to compare performance with CF on/off - no difference. I’ve tried various tweaks to force CF to work:
- rename to etqw.exe: crash, GLEW failed to initialize
- create custom profiles using RadeonPro: no difference, however I noticed slight improvment with Supertiling method
I’ve tried this on simple (basic per-pixel lighting) as well on complex programs (HDR render with AO and shadows, GPGPU calculations) with no effect (looks like only one GPU is working). In DirectX11 apps, speedup was almost 1,9x.
Is there something else to do? Or everything we can do is to wait when finally ATI improves their drivers and enables us to choose manually CF profiles?
Thanks