getting avg of 540khash w/ gigabyte 7970 using cgminer..any help?

[iruleeveryone28]

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?

[1713449307]

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[iamrickrock]

That's about the same as I get on my 7970

[iruleeveryone28]

That's about the same as I get on my 7970

its awful, equal if not worse performance to a 7950..

[dangil]

what's your GPU clocks?
and your motherboard/cpu?

[roy7]

Overclocking memory speed helps a large amount with scrypt. Also set powertuner to +20.

[iruleeveryone28]

what's your GPU clocks?
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

[iruleeveryone28]

Overclocking memory speed helps a large amount with scrypt. Also set powertuner to +20.

done, cheers ill post back

[iruleeveryone28]

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

[meebs]

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.

[iruleeveryone28]

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.

the card really doesnt like intensity above ~16 it tends to crash, would you still recommend trying it?

[iruleeveryone28]

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.

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?

[peacefulmind]

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?