|
Title: 6970 question Post by: bdempsey4009 on July 26, 2011, 05:09:03 PM I have 3 6970's, which previously I had 2 in a ubuntu machine and 1 in an xp box. I was averaging 330 m/hashes per gpu. Today I put all 3 in my ubuntu box and now I average 280 - 300 m/hashes. Why the drop in hashing power and is there anything I can do to regain the original hashing power?
Title: Re: 6970 question Post by: SHlFT on July 26, 2011, 05:21:41 PM thats pretty low to begin with.
i have two 6970 going at around 800MHashs/s total Title: Re: 6970 question Post by: bdempsey4009 on July 26, 2011, 08:04:05 PM Any ideas for me to try? Or what could be the problem?
Title: Re: 6970 question Post by: ToriAmos1963 on July 26, 2011, 09:18:08 PM I don't know if there is an equivalent setting in Ubuntu, but make sure the "Power Control" setting in AMD's Catalyst driver is at 20%. I have a single XFX 6970 running at 950 MHz and 420 Mhps with a temp that hovers around 70 degrees. If I set the "Power Control" to 0%, my speed drops when I go over 900 MHz.
Title: Re: 6970 question Post by: SHlFT on July 26, 2011, 09:58:21 PM I don't know if there is an equivalent setting in Ubuntu, but make sure the "Power Control" setting in AMD's Catalyst driver is at 20%. I have a single XFX 6970 running at 950 MHz and 420 Mhps with a temp that hovers around 70 degrees. If I set the "Power Control" to 0%, my speed drops when I go over 900 MHz. That's a very good configuration. Title: Re: 6970 question Post by: ToriAmos1963 on July 26, 2011, 10:11:33 PM I got a nice boost when I switched from GUIMiner to bitminter miner. It works really well for 6000 series radeon cards. I was at 400s with GUIMiner and now I'm in 420s with 0.2% stale/rejected shares. The author is very active on this board and is constantly adding features that users want.
Check out this thread: http://forum.bitcoin.org/index.php?topic=22432.0 I don't know if there is an equivalent setting in Ubuntu, but make sure the "Power Control" setting in AMD's Catalyst driver is at 20%. I have a single XFX 6970 running at 950 MHz and 420 Mhps with a temp that hovers around 70 degrees. If I set the "Power Control" to 0%, my speed drops when I go over 900 MHz. That's a very good configuration. Title: Re: 6970 question Post by: Mistafreeze on July 27, 2011, 02:54:56 AM I don't know if there is an equivalent setting in Ubuntu, but make sure the "Power Control" setting in AMD's Catalyst driver is at 20%. I have a single XFX 6970 running at 950 MHz and 420 Mhps with a temp that hovers around 70 degrees. If I set the "Power Control" to 0%, my speed drops when I go over 900 MHz. That's a very good configuration. I also have a XFX 6970. Clock @ 950, but my Power Control is at 5% getting 423Mhps. Runs about 70 degrees with the fan at 65%. I didn't see any increase when I moved the power control beyond 5%. Title: Re: 6970 question Post by: ToriAmos1963 on July 27, 2011, 02:21:32 PM I think the "Power Control" allows the card to pull more current if it needs it. It won't make a difference if there is not need for extra juice. I was just lazy and my temps were low enough that I didn't tinker with it.
I don't know if there is an equivalent setting in Ubuntu, but make sure the "Power Control" setting in AMD's Catalyst driver is at 20%. I have a single XFX 6970 running at 950 MHz and 420 Mhps with a temp that hovers around 70 degrees. If I set the "Power Control" to 0%, my speed drops when I go over 900 MHz. That's a very good configuration. I also have a XFX 6970. Clock @ 950, but my Power Control is at 5% getting 423Mhps. Runs about 70 degrees with the fan at 65%. I didn't see any increase when I moved the power control beyond 5%. |