LTC mining 5770 Unable to hash over 162kh/s

pekv2

hero member

Activity: 770

Merit: 502

Quote from: AmDD on April 29, 2013, 07:24:39 PM

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.

AmDD

legendary

Activity: 1027

Merit: 1005

Ive only managed to get my 5770 up to 145-150.

880/1100 didnt help me much. :/

pekv2

hero member

Activity: 770

Merit: 502

Quote from: cmbitmining on April 29, 2013, 05:03:34 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,

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://bitcointalksearch.org/topic/consolidated-litecoin-mining-guide-for-5xxx-6xxx-and-7xxx-gpus-117221

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)

cmbitmining

newbie

Activity: 10

Merit: 0

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,

Topic: LTC mining 5770 Unable to hash over 162kh/s (Read 1596 times)