I have ATI HD 7970, currently getting 606 kh/s.
My clocks are GPU 1125 and memory 1575. Using cgminer 2.11.4. (Maximum overclock, this card comes with 925 and 1375 stock clocks and it is stable)
How do you guys get close to 700, I have tried playing with my clocks, tried to get 0.57 ratio between GPU and memory, no luck. Drivers are 13.1.
My current setting are --worksize 256 -g1 -I 13 --lookup-gap 2 --shaders 2048 --thread-concurrency 8192
Any ideas?
Thx
try this -g 2 -I 13 --shaders 2048 -w256
use cgminer 2.11.4 do not set thread-concurrency let cgminer detect the best value for your cards, maybe try the last beta drivers 13.3, i get more than 720 kh/s with core1040/memory1750 with vcore unervolted and vmemory overvolted , i did order Arctic extreme cooler tried it on 1 card and it is amazing I am getting around 67 c°with these setting comparing to the other cards that are running @ 86 c° I did order more coolers for the other cards, it is worth every cent I did give.
No luck here either, g2 instead of g1 cuts my hash to 400. Will try the new drivers, although I see people still complain bout them a lot.
you have to do some work around, each card model differ , do not get so pulled with the settings posted here , in my case the myth of 0.57 doesn’t work , i am using a sapphire dual-x with 925/1375 and I was struggling to get them to work @ 700+kh/s I did post a guide that you can check it, but it really vary not from the card only but i did notice that even the motherboard, in my case i am using 2 diffrent motherboard models but the same model of graphic cards on both motherboards, in the first model I get 720 kh/s so easy , the second model was a pain in the ass , for the same cards i use different Over Clockings to get the same hash rate .
I am trying to tell you that getting the right configs for scrypt mining is not that easy, you have to play around to get that sweet spot for your cards, you can take a look here
https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparisonwhen I was just starting few months ago i got really confused , take a look at the list and see how 7970 really differ in matter of OC and hash rate. I do not know how this will help you, but at least you have a clear understanding of your problem which i wish you will be solving soon, now the LTC community is bigger and you will fast solve your issues , it took me 3 weeks to get my shit up when i just started few months ago.
good luck
Yes, I understand that I cannot expect to get a fully functional start-up string and get everything working immediately. I have been playing with this for a few days, I do not expect it to get fixed by itself. My initial hash was 390 and now I am pulling 606 which is already a success. I guess I have made a mistake since I got Asus 7970 HD and not TOP version of this card since my card s 925 stock and the other gets 1000mhz of the box. This is the price of my ignorance.
) In my case this 0.57 system does not work either, according to the guide of a guy who made cgminter, I have increased my mem speed to 1575 (max setting for this card with supplied Asus software) and tried to match GPU clock to get that ration, the results was about 440.
Will try using the reaper next and then I will try every different set of drivers supplied by ATI, up to know have tried 12.8 (440 hash) and 13.1 (606).
I might be getting another card, this time Gibabyte 7970, would they work in the same machine, is this possible since I cannot use crossfire cause the cards are not the same?
Thank a lot for your help, I really appreciate it, I will do my best to share my results in order to contribute to litecoin community.