Bitcoin Forum

What should my command line look like for a 5970 and a 6870?

For 5830 I use ...

-I 9 --auto-gpu --gpu-engine 800-960 --gpu-memclock 300 -w 128 -g 3

Basically same thing for a 5850.

I tried that with my 5970 - getting 330 per core and I only know how to do one command line so the 6870 is running the same thing and its getting 284mhash.

How do I make a command line for each card?  Or is that pointless.

Look at the -d option.  It lets you specify certain devices.  so you could run devices 0-3 off one command line and devices 4-6 off a second command line.  (or whatever combinations you want)

Your command line example has been edited to do two cards for a third just add another ,..... to each that I changed using the settings desired for the new card. Note your 5970 will show as two cards so in reality that command line edit I did is for that card alone in a system just add another for the 6870.

Okay, I see.  Just add a comma and the settings you want for 2nd card.  Awesome!!!

Anyone know best settings for 5970 and or 6870?

My 5970s all do 800,300 at 1v one I can get 850 on one core my 6870s both did 925,300 at 1v for just about 365mh/s per core on the 5970s 390mh/s on the 850 core 300mh/s on the 6870s.

Do I need to tweek my Afterburner settings to get this?  For some reason on this particular rig, AB does not work.

Are there ways to adjust voltage, other than Afterburner?

Thanks so much by the way.

Your welcome I use the Radeon BIOS Editor and flash the card with the settings I want used, I have no clue on the windows I use linux for all my mining machines.

Holy crap that sounds rad.  So you just have to turn your rigs on and they are already set to how you want them?

Yes that is how it can work and I have done it that way, most times I will take and put the settings for each card in a machine in the cgminer.conf file so I know for sure what I am using in that machine.

Man, I need to learn Linux better.  I am getting 20 cards tomorrow and another 10 next week.

This is what I do for my dedicated rig. I use windows, but its a pain to manually set the clocks and volts of SIX cards with an OC utility. Unfortunately, my cards seem to ignore fan profiles in the BIOS, so I use a bat file with Glakkeclock (google it) to set fan speeds on startup. I also use Phoenix to mine.

On the topic of firmware flashing, is there a limit to the amount of times the firmware can be flashed? I used to flash the firmware of my dvd writer to get better read/write speeds but it had a limited about of times you could flash it (no not the region set limit, thats different). Not sure if same is with gfx cards

In cgminer you can do that with --auto-fan in the command line to limit the rpms of the fans --gpu-fan 0-?? for the top percentage you want used it defaults to 50% on startup and for the temperatures for setting the limit you can use --temp-target ?? plus there is --vdcc I think it is to set the voltage never tried that.

I don't use CGMiner :)

I realize that I was just putting it into the terms of this thread how you would go about getting fan control using the cgminer so if the OP wanted to do that he would not need to ask about it.

If you bought your 5970 used you will have to keep an eye on the temps. The second core usually runs 2-6 degrees hotter than the core directly under the fan. Set any fan or temp settings based on the temps of the hotter core.
As far as, OC, just play around a little and watch the temps, keeping it under 70C is important for longevity and stability of the cards. Getting 830MH/s might sound great in conversation, but if the card is at 80C will shorten it's effective life, burning it out in 6 months. When you could've ran it at 750 MH/s at 70C for 1.5 years, it would be producing much more BTC over the long term.