https://bugs.freedesktop.org/show_bug.cgi?id=40024
--- Comment #6 from Andrew Randrianasulu randrik@mail.ru 2011-11-02 04:31:12 PDT --- for memtimings on radeon 7500 (changed via rovclock, while running proprietary driver) see forum post here and down :
http://forums.gentoo.org/viewtopic-p-3687568.html#3687568
-----------copy--------------
#rovclock -i Radeon overclock 0.6e by Hasw (hasw@hasw.net)
Found ATI card on 01:00, device id: 0x4c57 I/O base address: 0x3000 Video BIOS shadow found @ 0xc0000 Reference clock from BIOS: 27.0 MHz Memory size: 32768 kB Memory channels: 2, CD,CH only: 0 tRcdRD: 9 tRcdWR: 4 tRP: 8 tRAS: 18 tRRD: 3 tR2W-CL: 3 tWR: 4 tW2R: 2 tW2Rsb: 1 tR2R: 2 tRFC: 20 tWL(0.5): 2 tCAS: 3 tCMD: 0 tSTR: 1 XTAL: 27.0 MHz, RefDiv: 6
Core: 258.75 MHz, Mem: 364.50 MHz
------------copy-end-------------
And after over-clocking, note, some timings were lowered
------------copy2--------
UberPinguin ubrpngn # rovclock -i Radeon overclock 0.6e by Hasw (hasw@hasw.net)
Found ATI card on 01:00, device id: 0x4c57 I/O base address: 0x3000 Video BIOS shadow found @ 0xc0000 Reference clock from BIOS: 27.0 MHz Memory size: 32768 kB Memory channels: 2, CD,CH only: 0 tRcdRD: 5 tRcdWR: 2 tRP: 4 tRAS: 14 tRRD: 3 tR2W-CL: 2 tWR: 3 tW2R: 0 tW2Rsb: 1 tR2R: 1 tRFC: 14 tWL(0.5): 2 tCAS: 3 tCMD: 0 tSTR: 1 XTAL: 27.0 MHz, RefDiv: 6
Core: 290.25 MHz, Mem: 380.25 MHz ----------copy2 ends----
reported speed boost:
from ~647fps to ~1018 in glxgears
guess 260 ->290 engine and 364 -> 380 mem can't explain such big boost alone?