Hi, thanks for your response.
2013-08-21 17:39 keltez?ssel, Alex Deucher ?rta: > On Wed, Aug 21, 2013 at 10:31 AM, Boszormenyi Zoltan <zboszor at pr.hu> wrote: >> Hi, >> >> I read this Phoronix article: >> http://www.phoronix.com/scan.php?page=article&item=amd_hd6000_dpm&num=1 >> >> 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? >> > Are you seeing the same results on your board? If so are the results > roughly the same with dpm enabled vs. disabled? If so I doubt there > is a problem with dpm. On older dGPUs like this one dpm won't really > improve performance since the cards come up with relatively high > clocks by default. It's mainly for saving power when the GPU is idle. I have enabled dpm: $ cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.11.0-0.rc6.git0.1.fc20.x86_64 root=UUID=00df37a2-be3d-46fe-963a-ca08977fc5f6 ro quiet rhgb radeon.audio=1 radeon.dpm=1 LANG=hu_HU.UTF-8 I have just tried "openarena 0.8.5" again with forced "low" performance. Results is 26.87fps with low performance, 59.40-59.70fps with forced high performance. > >> 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=1087&pid=1176&psn=&lid=1&leg=0# >> > Note that a lot of 6570 cards, including yours use DD3 memory rather > than GDDR5 so they will have fairly limited memory bandwidth. I know. The 6570 tested by Phoronix must be GDDR5 but it's not mentioned specifically. Best regards, Zolt?n B?sz?rm?nyi > > Alex > >> 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, >> Zolt?n B?sz?rm?nyi >> >> _______________________________________________ >> dri-devel mailing list >> dri-devel at lists.freedesktop.org >> http://lists.freedesktop.org/mailman/listinfo/dri-devel
