Hi,
I read this Phoronix article: http://www.phoronix.com/scan.php?page=article&item=amd_hd6000_dpm&nu...
Congrats to the progress achieved so far.
However, I can see an interesting deviation for HD6570 from the observed trend of other chips.
r600g can reach 80+ percent of the performance of Catalyst for most HD6xxx chips except for 6570, where the performance is around 10-20 percent.
Do you have a theory about this difference? Maybe DPM doesn't work as intended on HD6570?
I have this kind of video card, so I wanted to test it myself. The exact model of my card is: http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1...
I have installed kernel 3.11-rc6 on Fedora 19 using this koji kernel: http://koji.fedoraproject.org/koji/buildinfo?buildID=457463
I haven't tested Catalyst but my r600g results mostly match the ones in the article even with a different CPU.
Best regards, Zoltán Böszörményi