R9 R290, Catalyst 13.12, Powertune +20%, GPU@1025MHz and RAM@1250MHz with Linux-v0.1.4 running -a 0, two threads per GPU and no other load. So far, no one was able to reproduce this in Windows but it should be possible because even a 280X easily hits more than 2700cpm. Still wondering because yesterday a user with 2 R9 290X reported only about 6100 cpm.
Can I ask what you are using a version of the LINUX it?
I am using UBUNTU DESKTOP version
Only recognizes a GPU, only 2300C / M ,with 3800C/M so long way
Will there under LINUX how to modify the GPU CLOCK, MEM CLOCK, GPU fans