Ok, here is the link of a post that has worked for me. Maybe it will for you, too, someday:
https://bitcointalksearch.org/topic/m.3870088
Now getting >700!
Topic: Need help with SAPPHIRE HD 7970 3GB GDDR5 OC with Boost (Read 2149 times)
did you change tc to 8192 and remove v 1?
Yes. I am really wondering if a BIOS flash to something else might help. All 4 of these cards are refurbs. They look brand new but it makes me wonder if Sapphire didn't flash them.
did you change tc to 8192 and remove v 1?
1050/1500 and 1080/1500 work best for 7970s. also tc of 8192 and remove -v 1
make sure to delete the old tahiti file in the cgminer folder first when you change thread concurrency.
also see if you can get by with powertune 0. +20 was the hype previously but usually not needed.
make sure to delete the old tahiti file in the cgminer folder first when you change thread concurrency.
also see if you can get by with powertune 0. +20 was the hype previously but usually not needed.
Thanks for your reply. I just did as recommended and went with the 1050/1500: net result is gain of 10Kh/s. I am still nowhere near what others report of >700.
Any other ideas? Are there any motherboard BIOS defaults that could be changed to help? Just guessing...
1050/1500 and 1080/1500 work best for 7970s. also tc of 8192 and remove -v 1
make sure to delete the old tahiti file in the cgminer folder first when you change thread concurrency.
also see if you can get by with powertune 0. +20 was the hype previously but usually not needed.
make sure to delete the old tahiti file in the cgminer folder first when you change thread concurrency.
also see if you can get by with powertune 0. +20 was the hype previously but usually not needed.
This card is driving me nuts. I cannot get over 550Kh/s no matter what I do with cgminer 3.5 or 3.7.2
Model number: SAPPHIRE HD Radeon 11197-03-40G
Here is the BIOS for this card: Sapphire.HD7970.3072.120925.rom
bios p/n as reported by AtiFlash is 113-2104XTHY-0B5
Rig is Win 7 64 prof. 4GB 1066 Corsair DDR3 in AsRock 790 Extreme3 MB, Rosewill LIGHTNING-1300, 4 riser cables, Sempron 145, SSD HD. Rig never gets too hot in crate with huge fan constantly circulating.
Current cgminer config (although I have tried just about everything):
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://gigahash.wemineltc.com:3334 -u UUUUUUUU.1 -p PPPPPPP --shaders 2048 --thread-concurrency 10240 --intensity 13 --queue 0 --worksize 256 --gpu-fan 50 --gpu-engine 1075 --gpu-memclock 1500 --gpu-vddc 1.125 --gpu-powertune 20 --no-submit-stale -g 2 -v 1 --lookup-gap 2
I have moved the switch to the 1 setting for flashable ROM on all 4 cards. I flashed ROM with 3 older versions of Sapphire HD Radeon 7970 bioses, 2 crash and other 1 is no change. I did this test on GPM #2.
Please advise. Thanks.
Model number: SAPPHIRE HD Radeon 11197-03-40G
Here is the BIOS for this card: Sapphire.HD7970.3072.120925.rom
bios p/n as reported by AtiFlash is 113-2104XTHY-0B5
Rig is Win 7 64 prof. 4GB 1066 Corsair DDR3 in AsRock 790 Extreme3 MB, Rosewill LIGHTNING-1300, 4 riser cables, Sempron 145, SSD HD. Rig never gets too hot in crate with huge fan constantly circulating.
Current cgminer config (although I have tried just about everything):
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://gigahash.wemineltc.com:3334 -u UUUUUUUU.1 -p PPPPPPP --shaders 2048 --thread-concurrency 10240 --intensity 13 --queue 0 --worksize 256 --gpu-fan 50 --gpu-engine 1075 --gpu-memclock 1500 --gpu-vddc 1.125 --gpu-powertune 20 --no-submit-stale -g 2 -v 1 --lookup-gap 2
I have moved the switch to the 1 setting for flashable ROM on all 4 cards. I flashed ROM with 3 older versions of Sapphire HD Radeon 7970 bioses, 2 crash and other 1 is no change. I did this test on GPM #2.
Please advise. Thanks.
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