#############UPDATE############
Try to use the latest drivers to get best results.
The latest driver atm (September 15) is:
Amd 13.10 Beta Driver you could find it here:
##############################
I’m doing some testing right now but with the new AMD Catalyst OpenGL 4.3 beta driver for Windows 8.1, installed clean in a windows 8 (disabling driver signature) the Cycles kernel compiled successfully in around 5 minutes.
Specs:
Intel qx6700 @3.6
8Gb ddr2
Amd 7950 3gb gddr5
Windows 8
Blender 2.68a 64bit
How to:
Driver:
Clean old drivers with driver sweeper (Alternatives: Atiman Uninstaller, Driver fusion)
use CCleaner after driver sweeper to clean any remaining entries in the registry.
Reboot
Install new driver (I used this driver)
reboot again.
Blender:
Win + R type CMD press enter
go to your blender folder. ex: Cd C:\Program Files\Blender Foundation\Blender
press enter and then type: set CYCLES_OPENCL_TEST=all
And now: start blender.exe
Inside blender go to File -> User preferences -> System
Under compute device select OpenCL and then Tahiti.
Close the preferences windows and go to the render panel and select device: GPU Compute.
Close all unnecessary programs to release some memory and try to render something, the first time it’ll take ~5 minutes you can check in the log window if the build has succeed.
The first time i tried my pc crash so take care not to lose something.
EDIT: Well it works fine in pretty basic scenes however there’s some glitches in more complex scenes:
BMW-MikePan scene 128 samples 8 Minutes Gpu only (AMD 7590) i expected more speed but it’s a beta driver so hopefully we can see a fully functional one before the end of summer.
EDIT:
I don’t have enough posts yet so my replies are going moderated so it’ll be a little delay in my replies.
YAFU: If i had enough time i’ll try to test it in linux but i’m messing around with wayland so i have to do a fresh install first and i don’t have too much spare time.
To the forum: I hope that using edit for reply wasn’t against any rule in the forum, i know that is not the correct way to do things and i’m sorry but i don’t know if i’ll have enough time to reply tomorrow.
Anyhow everyone have enough information to try this by himself now so it’ll be interesting to know what gpus are capable to run cycles and if it would have artifacts like my 7950 cause it could be OC related.