Mailinglist Archive: radeonhd (93 mails)

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Re: [radeonhd] GPU throttling?
  • From: Alex Deucher <alexdeucher@xxxxxxxxx>
  • Date: Thu, 18 Feb 2010 15:50:43 -0500
  • Message-id: <a728f9f91002181250m5d0db214rf6afee5d7185a59f@xxxxxxxxxxxxxx>
2010/2/18 Ákos Maróy <akos@xxxxxxxx>:
Rafal,

I also tried to run rovclock to check on the GPU clock speeds, but the
results are invalid:

Don't use rovclock, it's only applicable to r1xx-r4xx radeons (so it
won't work on your card), and even then it doesn't take into account
the post divider properly.

Alex


$ sudo rovclock -i
Radeon overclock 0.6e by Hasw (hasw@xxxxxxxx)

Found ATI card on 01:00, device id: 0x68a1
I/O base address: 0x4000
Video BIOS shadow found @ 0xc0000
Invalid reference clock from BIOS: 0.0 MHz
Memory size: 0 kB
Memory channels: 1, CD,CH only: 0
tRcdRD:   3
tRcdWR:   5
tRP:      7
tRAS:     8
tRRD:     3
tR2W-CL:  2
tWR:      5
tW2R:     0
tW2Rsb:   0
tR2R:     1
tRFC:     13
tWL(0.5): 0
tCAS:     0
tCMD:     0
tSTR:     0
XTAL: 27.0 MHz, RefDiv: 192

Core: 27.0 MHz, Mem: 27.0 MHz


is there any way to determine the real GPU clock speed?


Akos

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