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Title: 7950 only getting 276kh/s at best!? Post by: Fiyasko on March 22, 2014, 11:58:34 PM So it's my first time setting up litecoin mining, and i've really been trying for about half a day now...
None of the Miming Hardware Comparison 7950 configurations work for me, I think it's because of the thread concurrency, Right now the best my card can run at is whats listed for 7970's, 8192 Worse off is that if I raise the intensity above 13 I get 100% hardware errors Running win764 with bfgminer I've even tried the "add 2048 at a time" thing, 8192 is the highest i can go and i can't raise the intensity What should i do? I should beable to get around ~600kh/s with my 7950, not a max of ~270kh/s Title: Re: 7950 only getting 276kh/s at best!? Post by: Wipeout2097 on March 23, 2014, 12:16:16 AM Use this on your config:
"intensity" : "18", "worksize" : "256", "kernel" : "scrypt", "lookup-gap" : "2", "thread-concurrency" : "21712", "shaders" : "1792", "gpu-engine" : "1050", "gpu-fan" : "60-100", "gpu-memclock" : "1500", "gpu-powertune" : "20", "gpu-threads" : "1", "temp-cutoff" : "74", "temp-overheat" : "70", "temp-target" : "66", What card and miner sw you're using? Title: Re: 7950 only getting 276kh/s at best!? Post by: momchilandonov on March 23, 2014, 08:26:29 AM Wrong TC can cause much HW. Also if you cannot increase TC and the miner gives an error about free allocation units you must increase the system memory - RAM.
Title: Re: 7950 only getting 276kh/s at best!? Post by: Fiyasko on March 23, 2014, 12:20:09 PM Use this on your config: XFX79503gb (not a doubleD, but same PCB)"intensity" : "18", "worksize" : "256", "kernel" : "scrypt", "lookup-gap" : "2", "thread-concurrency" : "21712", "shaders" : "1792", "gpu-engine" : "1050", "gpu-fan" : "60-100", "gpu-memclock" : "1500", "gpu-powertune" : "20", "gpu-threads" : "1", "temp-cutoff" : "74", "temp-overheat" : "70", "temp-target" : "66", What card and miner sw you're using? BFGMiner (fwiw 8gb DDR3pc1600) If i remove the --lookup-gap then i get 240kh/s Using the above settings im now running at 512kh/s (without the --lookup-gap) Title: Re: 7950 only getting 276kh/s at best!? Post by: Wipeout2097 on March 23, 2014, 12:51:29 PM Nice. You should get 600+ Kh/s out of it though.
Get sgminer http://www.reddit.com/r/litecoinmining/comments/1xanpt/ann_sgminer_410_release/ Test with kernel "zuikkis" Use Catalyst 13.12 drivers. Test with: "thread-concurrency" : "8192", "gpu-threads" : "2", Play a bit with gpu-engine, lower sometimes gives more hashrate, or upper a bit. Then most undervolt the cards to prevent throttle, damage and reduce power consumption. I dunno, getting those last 30 ~ 50 Kh/s out of a card is a matter of patience. Title: Re: 7950 only getting 276kh/s at best!? Post by: Fiyasko on March 23, 2014, 01:05:31 PM *hubert farnsworth* Good news everyone!
My card has mysteriously decided to run at 576kh/s instead of 512kh/s Didn't change anything... Just rebooted Then i dropped the core clock by 50mh/z down to 1ghz and it runs at 570kh/s I think i'll shave off 6kh/s for a reduction in voltage and core speed Title: Re: 7950 only getting 276kh/s at best!? Post by: Fiyasko on March 23, 2014, 01:34:19 PM Okay wtf, I just went to go check on my duo 6870 scrypt mining computer, And one of the 6870's has decided to Magically run 1/3rd the speed of the other one...
It was running at 292kh/s on both cards for atleast 48hrs, Now one of them is pissing around at 126kh/s and I can't figure out why I do know that when I checked on the machine in the morning, all mining had stopped, but there were no clues as to why, the temperature sure didn't go too high |