5850 Linux Overclock more than 775Mhz without modified BIOS

[sanchaz]

So is it possible to overclock a 5850 in linux more than 775Mhz without modifying the BIOS?

EDIT:
btw why can it be done in windows and not in linux?

[1714938910]

1714938910

[1714938910]

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[harm]

Hi!
I have the same problem.
I have got a XFX 5850 black edition:

Code:

user@linuxcoin:/media/usb$ aticonfig --adapter=all --odgc 
Adapter 0 - ATI Radeon HD 5800 Series 
                            Core (MHz)    Memory (MHz)
           Current Clocks :    157           300
             Current Peak :    765           1125
  Configurable Peak Range : [550-775]     [900-1125]
                 GPU load :    0%

Adapter 1 - ATI Radeon HD 5800 Series 
                            Core (MHz)    Memory (MHz)
           Current Clocks :    157           300
             Current Peak :    765           1125
  Configurable Peak Range : [550-775]     [900-1125]
                 GPU load :    0%
user@linuxcoin:/media/usb$

I am able to overclock from 765 to 775, or anything within the "Configurable Peak Range".
Whith AMDOverdrive I can change the range to set memory to 300, but I can't configure an higher value than 775 on core.

I have tried to cange the pcie mhz in the bios from 100 to 110, but the card still runs with 775 mhz...

[grndzero]

Depending on which card it is exactly you should be able to set the clock to 875 on a stock card. I had to load a modified BIOS with 1.088 voltage to be able to run 900-975 stably.

Installing the ATI 11.6 Linux drivers (remove fgrlx packages first before installing) will let you set out of bound clock and memory settings with aticonfig.

export DISPLAY=:0
aticonfig --odsc 875,300 --adapter=all