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Author Topic: Can't get multiple 7970's to their proper hash rate. [BOUNTY: 2 BTC] *SOLVED*  (Read 888 times)
dextryn
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May 29, 2012, 09:21:03 PM
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Hey everyone.  I've recently run into some problems with my new setup I have.  Just to clarify, I have 4 7970's on another board and similar power supplies that work just fine.

My problem is that I can only get the 1st GPU to a hash rate of +/- 630 or so (which is lower than my other 7970s anyway)  and the other 3 kick it around ~250.

I've tried cgminer, diablo miner with Afterburner and nothing seems to work right.

Here's a pic of what I have:


When I run diablominer with Afterburner, after burner shows that the 3 other cards are running at 100% but they're still only at about ~250 as well.  Is there something I can do to help fix this?  Any ideas?

My motherboard is an MSI 890FXA-GD70
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dextryn
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May 29, 2012, 09:40:37 PM
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Also,  here is a picture of my afterburner monitor running as well.  You can see the first 3 GPU's jumping up and down.
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May 30, 2012, 02:30:48 AM
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I did some Googling, and I came across this stackExchange post that seemed similar

http://bitcoin.stackexchange.com/questions/2562/help-locating-bottleneck-on-new-mining-rig

Quote
Seems that it's some combination of driver/sdk bugs. Booting linuxcoin from a thumb drive solved everything.

It might be worth a shot.

Check out the results from my Bitcoin Survey Project!
https://bitcointalk.org/index.php?topic=88927.0
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May 30, 2012, 05:01:07 PM
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Only thing I can see is to cut out that second ",256" line in your worksize config.

What driver/sdk?

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dextryn
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May 30, 2012, 05:35:05 PM
 #5

I remember my windows installation getting a little buggy now that I think of it.  I'll try reinstalling and seeing how that goes.

Hey, additional bounty (1 BTC) for whoever can help me with the best config for my cards (cgminer or whatever is best)
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May 30, 2012, 05:39:32 PM
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Install 12.3. And also try disabling ULPS if that doesnt work.

See this thread.

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May 30, 2012, 11:27:02 PM
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AzN1337c0d3r, 12.3 worked.  Send me your address for your 2 BTC!
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May 30, 2012, 11:38:14 PM
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Dont worry about bounty, consider it a gift to get your mining operation started Smiley

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May 30, 2012, 11:47:18 PM
 #9

Thanks, you're awesome!
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