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Title: LTC mining 5770 Unable to hash over 162kh/s Post by: cmbitmining on April 29, 2013, 10:03:34 PM I have been adjusting settings for a couple days now. I am running a 5770 with cgminer -scrypt on win 7x64 with the following
--worksize 256 --gpu-engine 688 --gpu-memclock 1100 --shaders 800 -g 1 --thread-concurrency 8000 --intensity 18 I have adjusted the gpu-engine and memclock to the sweet spot above. I do see others claiming around 200kh/s but I can't figure it out. Any help/info would be appreciated. Thanks, Title: Re: LTC mining 5770 Unable to hash over 162kh/s Post by: pekv2 on April 30, 2013, 12:06:30 AM I have been adjusting settings for a couple days now. I am running a 5770 with cgminer -scrypt on win 7x64 with the following --worksize 256 --gpu-engine 688 --gpu-memclock 1100 --shaders 800 -g 1 --thread-concurrency 8000 --intensity 18 I have adjusted the gpu-engine and memclock to the sweet spot above. I do see others claiming around 200kh/s but I can't figure it out. Any help/info would be appreciated. Thanks, Try --gpu-engine 880 --gpu-memclock 1100. You want your 5k series cards overclocked at a certain ratio. 1100 multiply by .8 = 880. Also, lower your thread concurrency https://bitcointalk.org/index.php?topic=117221.0 Quote Mining Litecoin The major factor which impacts hash rate/hardware errors is the thread_concurrency. The second most important factor for some cards is the ratio of core speed to memory speed. Typically optimum values of thread_concurrency are a multiple of 64 and vary per card and per card family (see below). The (core speed/memory speed) quotient should be 0.8 or less for 5xxx/6xxx cards and 0.7 or less for most 7xxx cards. Some evidence suggests that different 7xxx cards may have different ideal core:memory clock ratios, too. Recommended thread concurrencies for 57xx cards: 2368-4096 (3200 is common) 58xx cards: 4096-8192 (5600, 7168, and 8000 are common) 5970 card: 4096-8192 (5632 or 8000 are common) Title: Re: LTC mining 5770 Unable to hash over 162kh/s Post by: AmDD on April 30, 2013, 12:24:39 AM Ive only managed to get my 5770 up to 145-150.
880/1100 didnt help me much. :/ Title: Re: LTC mining 5770 Unable to hash over 162kh/s Post by: pekv2 on April 30, 2013, 12:30:49 AM Ive only managed to get my 5770 up to 145-150. 880/1100 didnt help me much. :/ Then try 900/1125. Just keep going up till you find the real sweet spot. My main point was core divided by .8 or memory multiplied by .8. As explained in above quotes. |