I have posted the same thing.
I have 2 sapphire 7970s that get 700kH/s. (these are vanilla 7970s)
I have 2 other sapphire 7970s that won't go over 550kH/s. (these are "GHZ" editions - but actually are much worse for hashing - so far).
I have tried everything under the sun.
The difference I am starting to think has to do with the BIOS version that is on the card itself. Any thoughts on flashing the GHZ editions to a plain old 7970 BIOS?
Topic: getting avg of 540khash w/ gigabyte 7970 using cgminer..any help? (Read 1100 times)
April 09, 2013, 07:08:37 PM
try this...
--scrypt --thread-concurrency 21712 --intensity 20 -g 1 -w 256
at 1000/1500 on my sapphire 7970 I get about 680khash.
If i go up to 1050/1600 i'll get 710khash.
--scrypt --thread-concurrency 21712 --intensity 20 -g 1 -w 256
at 1000/1500 on my sapphire 7970 I get about 680khash.
If i go up to 1050/1600 i'll get 710khash.
hmm getting an error with those settings.
erro 5 : enqueueing kerel onto command queue
GPU 0 failure, disabling!
Thread - being disabled
you didnt mean 21760 by any chance?
April 09, 2013, 06:48:30 PM
try this...
--scrypt --thread-concurrency 21712 --intensity 20 -g 1 -w 256
at 1000/1500 on my sapphire 7970 I get about 680khash.
If i go up to 1050/1600 i'll get 710khash.
--scrypt --thread-concurrency 21712 --intensity 20 -g 1 -w 256
at 1000/1500 on my sapphire 7970 I get about 680khash.
If i go up to 1050/1600 i'll get 710khash.
the card really doesnt like intensity above ~16 it tends to crash, would you still recommend trying it?
April 09, 2013, 06:44:56 PM
try this...
--scrypt --thread-concurrency 21712 --intensity 20 -g 1 -w 256
at 1000/1500 on my sapphire 7970 I get about 680khash.
If i go up to 1050/1600 i'll get 710khash.
--scrypt --thread-concurrency 21712 --intensity 20 -g 1 -w 256
at 1000/1500 on my sapphire 7970 I get about 680khash.
If i go up to 1050/1600 i'll get 710khash.
April 09, 2013, 06:33:06 PM
with mem @ 1600 and GPU @ 1000 and no power control im getting over 600, but its unstable and crashes.
with mem at 1600 gpu at 1000, 20 power control im averaging 520
with mem at 1600 gpu at 1000, 20 power control im averaging 520
April 09, 2013, 06:24:37 PM
Overclocking memory speed helps a large amount with scrypt. Also set powertuner to +20.
done, cheers ill post back
April 09, 2013, 06:22:28 PM
what's your GPU clocks?
and your motherboard/cpu?
and your motherboard/cpu?
well, i added --shaders 2048 (not sure what this is but it seemed to make a difference) and pumped the mem up to 1600.
got ~600 but the computer konked out after about 5 minutes. will try 1550 see if its more stable
April 09, 2013, 06:13:19 PM
Overclocking memory speed helps a large amount with scrypt. Also set powertuner to +20.
April 09, 2013, 06:06:27 PM
what's your GPU clocks?
and your motherboard/cpu?
and your motherboard/cpu?
April 09, 2013, 03:22:46 PM
That's about the same as I get on my 7970
its awful, equal if not worse performance to a 7950..
April 09, 2013, 03:09:12 PM
That's about the same as I get on my 7970
April 09, 2013, 02:59:45 PM
cgminer --scrypt -o http://xxxxxx -u xxxxxxx -p xxxxxx --intensity 13 --worksize 256 --thread-concurrency 8192 -g 2
any ideas? should i be using a conf file instead?
any ideas? should i be using a conf file instead?
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