5850 Linux Overclock more than 775Mhz without modified BIOS

Zenitur

sr. member

Activity: 362

Merit: 250

Code:

$ aticonfig --od-enable
$ aticonfig --list-adapters
* 0. 02:00.0 ATI Radeon HD 5800 Series
1. 01:05.0 ATI Radeon HD 3200 Graphics

* - Default adapter
$ aticonfig --odsc=1000,250 --adapter=0

Adapter 0 - ATI Radeon HD 5800 Series
New Core Peak : 1000
New Memory Peak : 250
$ kanotix@Kanotix:~$ aticonfig --adapter=0 --od-gettemperature

Adapter 0 - ATI Radeon HD 5800 Series
Sensor 0: Temperature - 71.00 C

nomnomnom

sr. member

Activity: 313

Merit: 250

Interesting, I assumed that the cards are all more or less the same if they are 5850, maybe not

Quote from: Zagitta on June 17, 2011, 11:55:41 AM

as for volting in linux: http://forum.bitcoin.org/index.php?topic=10228.0

Nice link, thx!

Zagitta

full member

Activity: 302

Merit: 100

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Quote from: Grinder on June 17, 2011, 09:37:24 AM

I don't think those who can clock higher than 775 with AMDOverdriveCtrl have stock firmware. At least I haven't been been able to do it on any of my 4 5850 from 3 different brands. It can underclock more than aticonfig, though.

My reference ASUS card goes all the way up till 1200 :3 memory down to 900 only tough but that was fixed with AMDOverdriveCtrl...

as for volting in linux: http://forum.bitcoin.org/index.php?topic=10228.0

Code:

zagitta@Server:~$ aticonfig --odgc

Default Adapter - ATI Radeon HD 5800 Series
Core (MHz) Memory (MHz)
Current Clocks : 1000 300
Current Peak : 1000 300
Configurable Peak Range : [550-1200] [300-1400]
GPU load : 99%

zagitta@Server:~$ aticonfig --odgt

Default Adapter - ATI Radeon HD 5800 Series
Sensor 0: Temperature - 60.50 C

Grinder

legendary

Activity: 1284

Merit: 1001

I don't think those who can clock higher than 775 with AMDOverdriveCtrl have stock firmware. At least I haven't been been able to do it on any of my 4 5850 from 3 different brands. It can underclock more than aticonfig, though.

sanchaz

member

Activity: 90

Merit: 10

humm i did launch http://sourceforge.net/projects/amdovdrvctrl/ but could go past the 775 mark is there any special configuration i need to set to be able to hit 900?

hugolp

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Quote from: nomnomnom on June 16, 2011, 10:55:41 PM

Quote from: sanchaz on June 16, 2011, 08:51:02 PM

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

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

Hi, with AMDOverDriveCtrl you can go up to 900, beyond that I think you need to edit Bios.
http://sourceforge.net/projects/amdovdrvctrl/

AFAIK windows has a tool, trix or something, where you can overvolt and stuff, thats something
missing for linux.

It depends on the card manufacturer. I had a Asus 5870 that allowed me to go to 1200Mhz core speed without wihout flahsing (in reality I could not go over 1010 without the card becoming unstable). And then I had a XFX 5870 that only allowed me to go to 900Mhz core speed, and had to flash it.

fascistmuffin

newbie

Activity: 56

Merit: 0

Quote from: nomnomnom on June 16, 2011, 10:55:41 PM

Quote from: sanchaz on June 16, 2011, 08:51:02 PM

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

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

Hi, with AMDOverDriveCtrl you can go up to 900, beyond that I think you need to edit Bios.
http://sourceforge.net/projects/amdovdrvctrl/

AFAIK windows has a tool, trix or something, where you can overvolt and stuff, thats something
missing for linux.

My XFX 5850 doesn't run that stable at anything higher than 850ish. I think I've read that 5850's stop being stable in the 850-925 range at default voltage, so 900 should be fine for this case.

Meman

member

Activity: 92

Merit: 10

Sapphire Trixx works fine for windows. You can change VDDC, memory clock, gpu clock and fan speed. Some people use MSI Afterburner instead, but it's a little tricky to make the options available.

nomnomnom

sr. member

Activity: 313

Merit: 250

Quote from: sanchaz on June 16, 2011, 08:51:02 PM

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

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

Hi, with AMDOverDriveCtrl you can go up to 900, beyond that I think you need to edit Bios.
http://sourceforge.net/projects/amdovdrvctrl/

AFAIK windows has a tool, trix or something, where you can overvolt and stuff, thats something
missing for linux.

sanchaz

member

Activity: 90

Merit: 10

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

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

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