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Author Topic: Poor Radeon HD6950 Litecoin mining performance, need help [SOLVED]  (Read 26468 times)
tacotime
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December 18, 2012, 07:42:20 PM
 #21

Amazing, even after 12.10 uninstall and driver sweeper and 12.6 reinstall, everything is still fucked up.  I'll keep messing with it I guess.

Code:
XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
legitnick
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December 18, 2012, 09:46:00 PM
 #22

Amazing, even after 12.10 uninstall and driver sweeper and 12.6 reinstall, everything is still fucked up.  I'll keep messing with it I guess.
Use linux?

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tacotime
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December 18, 2012, 10:40:48 PM
 #23

tbh i'd rather fix the problem, since i doubt i'll be the last person to encounter it.

Code:
XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
tacotime
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December 18, 2012, 10:45:12 PM
 #24

installing 12.11 beta drivers seems to have fixed it

Code:
XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
Negcreep (OP)
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December 19, 2012, 11:41:05 AM
 #25

installing 12.11 beta drivers seems to have fixed it

I'll try this later today and let you know...thanks!

No time to play about with linux for the first time, till the new year Sad
tacotime
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December 19, 2012, 03:44:45 PM
 #26

installing 12.11 beta drivers seems to have fixed it

I'll try this later today and let you know...thanks!

No time to play about with linux for the first time, till the new year Sad

Yup, don't forget to delete all the old binaries for cgminer (.bin files)

I'm using cgminer 2.8.7 and getting 500 kh/s now on my 6970, thread-concurrency 8000

Code:
XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
Negcreep (OP)
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December 19, 2012, 05:07:41 PM
 #27

installing 12.11 beta drivers seems to have fixed it

I'll try this later today and let you know...thanks!

No time to play about with linux for the first time, till the new year Sad

Yup, don't forget to delete all the old binaries for cgminer (.bin files)

I'm using cgminer 2.8.7 and getting 500 kh/s now on my 6970, thread-concurrency 8000

Thanks man, you're a star. This combination has completely fixed my problems. I'm now getting 395kh/s out of both cards before even trying shader unlocking or overclocking.

Brilliant. Smiley


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Negcreep (OP)
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December 19, 2012, 06:33:11 PM
 #28

With the shaders unlocked (on one card at least) and both cards OC'd to 900/1300. I'm now pulling 900kh/s.

Sweet.

I love happy endings. Grin
mr.n00blar
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March 22, 2013, 02:58:55 AM
 #29

I'h having a poor performance issue as well. I'm on 12.11 beta and have sdk 2.5 installed. When I run CGminer it doesnt even see my 6950. When I run gui miner it seems like there is some sort of speed limiter.. I can hit 400MHs, 450MHs but then no matter what I use it goes back to 350MHs. I have tried 13.1, 12.10 and, 12.11 beta as well as sdk 2.8 and 2.5. I also have a GTX 480 installed if that helps. Any ideas? I'm loosing out on quite a bit Sad
drummerjdb666
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June 13, 2013, 12:05:16 AM
 #30

I'h having a poor performance issue as well. I'm on 12.11 beta and have sdk 2.5 installed. When I run CGminer it doesnt even see my 6950. When I run gui miner it seems like there is some sort of speed limiter.. I can hit 400MHs, 450MHs but then no matter what I use it goes back to 350MHs. I have tried 13.1, 12.10 and, 12.11 beta as well as sdk 2.8 and 2.5. I also have a GTX 480 installed if that helps. Any ideas? I'm loosing out on quite a bit Sad

I am actually about to buy a 6950 on ebay.. Will the 1gig gigabyte model be able to get 450? or will I have to settle for 350? 

sry to post on such an old thread but I figure it's relevant cause I don't really even have the money to be buying a 6950 let alone the 200 - 7950's I would love to have!!!  So I want to know and haven't been able to find a difference in kh/s between the 1gb and 2gb cards except for in games.. are you guys using 1 or 2 gig cards.. if you're still using 6950's?
notaek
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June 13, 2013, 12:27:06 AM
 #31

installing 12.11 beta drivers seems to have fixed it

So glad I stumbled across this thread.  Same exact thing going on here.  I'll try this later and see what the result is.

drummerjdb666
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June 13, 2013, 01:41:20 AM
 #32

installing 12.11 beta drivers seems to have fixed it

So glad I stumbled across this thread.  Same exact thing going on here.  I'll try this later and see what the result is.


Hey thanks for your help bro!  My 6950 will be on it's way shortly!
AngelusWebDesign
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July 10, 2013, 06:58:52 PM
 #33

By the way, did you know that Xubuntu -- or the latest AMD drivers, or CGMINER -- requires a DUMMY PLUG, even in Linux?

Bet you didn't know that!
vesperwillow
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September 09, 2013, 05:18:03 PM
 #34

While I don't have these cards, I have noticed the dummy plug requirement seems to vary. I've used Xubuntu / Ubuntu / Debian / BAMT all with varying cards, on recent drivers and cgminer builds, and never had to use a dummy plug for 1 or multi-GPU setups.

I'm thinking it could be a motherboard/bios thing as well as setting in the OS itself.

Situations may vary of course, but this has been my experience. None of the units in my farm have dummy plugs, or anything connected to them at all except an ethernet and power cable.

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