on a 5830:
Phatk2 - with BFI INT enabled, 256 worksize, vectors (2vector), at ~360MHz RAM and as high coreclock as you can get. Look at my previous posts on the first page of this topic.
SDK 2.5 is a good choice, you have to make sure that if you have ever installed a driver after 11.11 or SDK 2.6+ that you manually go in and remove the opencl files left behind by SDK 2.6, neither the uninstaller or a reinstallation of an older driver properly removes them. Stream SDK 2.1 will get +1%, but for the time it will take for you to get it working (substituting around files, newer miners won't work right because this SDK only support OpenCL 1.0, etc) it's not worth it.
i see, thanks. I just dont know how to install/use phatk2. Where do i get the phatk2 kernel from? I found this site containing phatk2:
https://github.com/DDarko/Phoenix-Miner/tree/master/kernels/phatk2but where to put it? Please, your help is appreciated very much
edit:
i tried to replace the original phatk120823.cl or so with the kernelfile i found (phatk2). Get an error:
[2012-08-24 19:53:21] Started cgminer 2.7.3
error detected in the compilation of "C:\Users\root\AppData\Local\Temp\OCLABB2
tmp.cl".
nternal error: clc compiler invocation failed.
[2012-08-24 19:53:22] Failed to init GPU thread 0, disabling device 0
[2012-08-24 19:53:22] Restarting the GPU from the menu will not fix this.
[2012-08-24 19:53:22] Try restarting cgminer.
ress enter to continue:
same error when i call the kernel phatk2120823.cl and use -k phatk2
As you mentioned its hard to deinstall higher drivers/sdk. i deinstalled drivers and sdk via install manager, then went to windows/system32/ delted 3 files (amdcpl64, amdcplcl64,Opencl or so) and the same on systemWOW64 or so. Reinstalled sdk 2.5 and driver version 11.11. im pretty sure there is no 2.6 sdk running, but how can i tell? Did i miss any files?