Bitcoin Forum
December 09, 2016, 09:29:07 PM *
News: Latest stable version of Bitcoin Core: 0.13.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: Best flags for GUIMiner with 6770 & 6950 ???  (Read 6737 times)
Elder III
Member
**
Offline Offline

Activity: 91



View Profile
August 02, 2011, 10:31:53 PM
 #1

Hey all, I have a half dozen HD 6770s and a trio of HD 6950s that are all mining away for me.  I am using GUIMiner (latest version) on Windows 7, both machines are dedicated miners and all GPUs are Overclocked but none are overvolted (yet).  I also have the memory underclocked to 600, which is the lowest Afterburner allows by default. 

So my question(s) are as follows:

Should I edit Afterburner to allow me to underclock the memory below 600?  Temperatures are fine on all GPUs as is, so unless it actually raises hash rate I don't see any reason to go lower?

What flags work best with my 6770s in the above described conditions?

What flags work best with my 6950s in the above described conditions?

Thanks to everyone!
1481318947
Hero Member
*
Offline Offline

Posts: 1481318947

View Profile Personal Message (Offline)

Ignore
1481318947
Reply with quote  #2

1481318947
Report to moderator
1481318947
Hero Member
*
Offline Offline

Posts: 1481318947

View Profile Personal Message (Offline)

Ignore
1481318947
Reply with quote  #2

1481318947
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
ssateneth
Legendary
*
Offline Offline

Activity: 1288



View Profile
August 03, 2011, 12:07:25 AM
 #2

Just lowering memory clock for lower temperatures isn't the sole point. The heat is generated from electricity. Less electricity used = less heat, and also smaller power bill, which means more money in your pocket at the end of the day.

You might want to look at the graph found here. It's pretty interesting. It's concerning memory clock speeds, different kinds of vectors, and different work sizes. YMMV
https://bitcointalk.org/index.php?topic=7964.0

iopq
Hero Member
*****
Offline Offline

Activity: 644


View Profile
August 03, 2011, 12:55:35 AM
 #3

Hey all, I have a half dozen HD 6770s and a trio of HD 6950s that are all mining away for me.  I am using GUIMiner (latest version) on Windows 7, both machines are dedicated miners and all GPUs are Overclocked but none are overvolted (yet).  I also have the memory underclocked to 600, which is the lowest Afterburner allows by default. 

So my question(s) are as follows:

Should I edit Afterburner to allow me to underclock the memory below 600?  Temperatures are fine on all GPUs as is, so unless it actually raises hash rate I don't see any reason to go lower?
I discovered that 200mhz and 256 worksize gives the best hashrate on my card

Elder III
Member
**
Offline Offline

Activity: 91



View Profile
August 03, 2011, 01:41:06 AM
 #4

Well, my power draw is 108 watts for the 6770s as they are right now, which is the manufacturer specs for tdp I believe.  Does anyone have data for how much of a power reduction I could expect if I lower the memory to 200-300 mhz range (@ 600 now)?

I will try 256 workrate instead of the 128 I have been using, thanks for the replies guys. Smiley
iopq
Hero Member
*****
Offline Offline

Activity: 644


View Profile
August 03, 2011, 11:07:07 AM
 #5

Well, my power draw is 108 watts for the 6770s as they are right now, which is the manufacturer specs for tdp I believe.  Does anyone have data for how much of a power reduction I could expect if I lower the memory to 200-300 mhz range (@ 600 now)?

I will try 256 workrate instead of the 128 I have been using, thanks for the replies guys. Smiley
256 doesn't work unless you're underclocking lower to like 350mhz and lower

film2240
Legendary
*
Offline Offline

Activity: 994


Professional filmmaker/Freelance videographer


View Profile WWW
August 03, 2011, 11:25:42 AM
 #6

I need to know a few things 4 my Radeon Hd6950
1.How can i improve system stability when overclocking?
2.what r the best setting ppl have found for that card that gets the maximum possible hash power
3.What are the flags for best performance
4.What are the best clock speeds (core and mem clocks) that people have found for getting high hashrates (my card is unclocked and OC'd to 890mhz and 947mhz mem)?
5.If overvolting is necessary how can I go about this without damaging my card,or making my system unstable?


[This signature is available for rent]
[This signature is available for rent]
[This signature is available for rent]
[This signature is available for rent]
Elder III
Member
**
Offline Offline

Activity: 91



View Profile
August 03, 2011, 01:12:57 PM
 #7

Well, my power draw is 108 watts for the 6770s as they are right now, which is the manufacturer specs for tdp I believe.  Does anyone have data for how much of a power reduction I could expect if I lower the memory to 200-300 mhz range (@ 600 now)?

I will try 256 workrate instead of the 128 I have been using, thanks for the replies guys. Smiley
256 doesn't work unless you're underclocking lower to like 350mhz and lower

Yeah< I noticed that; it actually lowered my M/hash rate by several hashes.  I'm getting a range of 212-217 as it is right now, which I'm pretty happy about, but I will try lowering the memory to 300 later today and see how it does.
Beta-coiner1
Hero Member
*****
Offline Offline

Activity: 518


View Profile
August 03, 2011, 06:38:06 PM
 #8

I have basically the same GPU setup albeit replace the 6770 for a 5770 though,lol.You might try some of the settings here and use some of the modified files from here or Diapolo's Kernel if you can find it on the forum.

If you believe this post has helped,please donate-

1JfwAiV8WbT9HtmQVvnkJ6KwUy9gLjzxdK
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!