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Topic: Help getting my 7970 past the 660 Mhash/s barrier - page 2. (Read 6365 times)

legendary
Activity: 966
Merit: 1052
Tip:
1040 is magic number for engine OC. Anything over it and you will lower performance from my experience.
sr. member
Activity: 336
Merit: 250
I've set the fan speed manually to 100%. I'm gonna try the other setting, thx!

Edit: It worked  Cheesy Now i get 690 Mhash/s, thx!

Code:
cgminer -o stratum+tcp://server:port -u user.1 -p password --shaders 2048 --intensity 9 -v 1
CC: 1150
MC: 800

Driver: 9.14
Catalyst: 13.1
CGMine4: 3.1
-ck
legendary
Activity: 4088
Merit: 1631
Ruu \o/
Don't set worksize, the default is better. Don't go above intensity 9. Try a different driver. But ultimately, as I said, every card is different.  Make sure you're using --auto-fan to ensure it stays cool enough too.
sr. member
Activity: 336
Merit: 250
So do you think 660 Mhash/s is really the limit of this one? No chance to get some better results? When mining scrypt based coins, I can easily push it up to 720 Khash/s   Undecided
-ck
legendary
Activity: 4088
Merit: 1631
Ruu \o/
Every card's different in how much overclock it can take. You're simply pushing yours too far.
sr. member
Activity: 336
Merit: 250
Once again....the mods like to close and move this topic....however. It's a question about Bitcoin mining hardware.
It's not about Litecoin, it's not about Chinacoin and it's not about BBQ. It's about Bitcoin god damn. Please don't move this topic to the Altcoin forum, mkey?

My Card: Gigabyte 7970 OC (GV-R797OC-3GD)

Code:
cgminer -o stratum+tcp://server:port -u user.1 -p password --shaders 2048 --intensity 14 --worksize 256 -v 1

CC: 1100
MC: 800

Driver: 9.14
Catalyst: 13.1
CGMine4: 3.1


That give's me about 660 Mhash/s. Now, if I try to higher the core clock , let's say to 1150, my hashrate goes up to 690...but then, after 1 minute or so, my card crashes and I have to reboot. Any idea how to solve this problem?

Thanks.
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