Mining with 5850, boost performance? - page 2.

grndzero

sr. member

Activity: 392

Merit: 250

Quote from: djex on April 19, 2011, 12:27:44 AM

Quote from: grndzero on April 18, 2011, 11:50:03 PM

Currently running at slightly below 70C at 70% fan speed and the case open.

How did you get your core to 900 Mhz in Ubuntu? I can't go above 775 Mhz on my core with aticonfig. Are you using a custom program?

The 5850 BIOS would lock up on mine at 875.
I actually flashed the BIOS to 5870 to get 900 Mhz from http://www.techpowerup.com/vgabios/61848/ATI.HD5870.1024.091112.html
(My cards are Reference, not DirectCU. Not sure if it matters for the the BIOS)

This is my script for setting the clocks:

export DISPLAY=:0.0
aticonfig --od-enable
aticonfig --odsc 900,1000 --adapter=all

And for fans:

export DISPLAY=:0.0
aticonfig --pplib-cmd "set fanspeed 0 70" (second number is fan speed percentage)
(if using a second card then do)
export DISPLAY=:0.1
aticonfig --pplib-cmd "set fanspeed 0 70"

gigabytecoin

sr. member

Activity: 280

Merit: 252

Quote from: koin on April 18, 2011, 07:49:32 PM

http://www.sapphiretech.com/ssc/TriXX/

Does this bear any weight at all? Never heard of trixx, seems to be a sapphire dependent technology. Have you noticed an increased hash rate?

yomi

newbie

Activity: 39

Merit: 0

Quote from: djex on April 19, 2011, 12:27:44 AM

Quote from: grndzero on April 18, 2011, 11:50:03 PM

Currently running at slightly below 70C at 70% fan speed and the case open.

How did you get your core to 900 Mhz in Ubuntu? I can't go above 775 Mhz on my core with aticonfig. Are you using a custom program?

In Ubuntu when I run

Code:

DISPLAY=:0 sudo aticonfig --odgc --adapter=all

I get this:

Code:

Adapter 0 - ATI Radeon HD 5800 Series 
                            Core (MHz)    Memory (MHz)
           Current Clocks :    790           1000
             Current Peak :    790           1000
  Configurable Peak Range : [765-918]     [1000-1200]
                 GPU load :    99%

Which means you can change the core clock in the 765-918 range and the memory clock in the 1000-1200 range.

So to change the core clock for instance to 800 Mhz:

Code:

DISPLAY=:0 sudo aticonfig --odsc=800,1000

djex

full member

Activity: 196

Merit: 100

Quote from: grndzero on April 18, 2011, 11:50:03 PM

Currently running at slightly below 70C at 70% fan speed and the case open.

How did you get your core to 900 Mhz in Ubuntu? I can't go above 775 Mhz on my core with aticonfig. Are you using a custom program?

grndzero

sr. member

Activity: 392

Merit: 250

Currently running at slightly below 70C at 70% fan speed and the case open.

Elanzer

newbie

Activity: 15

Merit: 0

Safe is more or less below 85'c for 24/7 mining.

Using MSI Afterburner you can unlock frequencies fully by editing the cfg file in the afterburner folder (should find this on google quick), so it will let you set your core clocks anywhere up to stupidly high amounts (ie: 1.3ghz). Pretty much any 40nm ATI card can expect atleast 900mhz core.

djex

full member

Activity: 196

Merit: 100

Thanks yomi the -f 1 got me an extra 2Mhash. I was already using the -v -w 128. Going to give Ubuntu a try.

What is a safe temperature for a card that is mining?

koin

legendary

Activity: 873

Merit: 1000

http://www.sapphiretech.com/ssc/TriXX/

rezin777

full member

Activity: 154

Merit: 100

You may need to flash your BIOS to increase the overclocking potential. Afterburner will go as far as you want it to if the BIOS permits.

yomi

newbie

Activity: 39

Merit: 0

Try to add these params to poclbm:

-v -w 128

If you just use the machine for mining, you can add also -f 1

Personally I also use a 5850 for mining in ubuntu 10.10. In ubuntu you can use the aticonfig command to change the clock of the card. I think Windows allows more possibilities for over/underclocking the card and the memory clock.

I get 270 Mhashes/sec in ubuntu with the params I mentioned, I can get over 300 Mhashes/sec changing the clock with aticonfig, but temp increases too much so normally I keep it at the stock 765 Mhz clock.

Good luck!

djex

full member

Activity: 196

Merit: 100

I got a HD 5850 and currently I am getting 248~ Mhash/s with Stream 2.1 running on Windows 7 using poclbm. Is there anything I can do to get more out my card or is this the max this card will go? I know there is the overclocking option but CCC and MSI After Burner sucks for going anything over the set maximum factory clock. I tried ATI tools but for some reason it didn't want to load the driver. Will riva tuner work?

What are some recommendations?

Also will switching to Ubuntu 10.10 have any difference?

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