Title: How to get +1300Kh/s with 2 280x ? Post by: luckyguy2807 on February 06, 2014, 07:08:23 PM I have 2 r9 280x connected, without crossfire on the same motherboard
I use -I 13 -g 2 -w 256 --shaders 2048 and I get a maximum speed of 1100 kh/s. Do you know what line or what should I do to get around 1400 kh/s? My fan is at 100 power, tem is steady around 60-65 degrees and i''m using cgminer 3.5.0 Title: Re: How to get +1300Kh/s with 2 280x ? Post by: the[K]id on February 06, 2014, 10:13:09 PM I would use -I 13 -g 2 -w 256 --gpu-engine 1050 --gpu-memclock 1500 --thread-concurrency 8192
With 3.7.2 and 13.12 drivers I see ~700 per card with this. Title: Re: How to get +1300Kh/s with 2 280x ? Post by: WickedCruelty on February 07, 2014, 05:27:49 AM Hey there, so let me first say i got a Sapphire Vapor-X 280x.
With that being said let me tell you i'm getting aroun 700-730kh/s. My temp is around 69C and my fan is running at around 43-45% only. If you want to try and duplicate my results here is how i run my cgminer 3.7.2: Code: setx GPU_MAX_ALLOC_PERCENT 100 If you don't have the same card i suggest you play with the thread concurrency, gpu engine and gpu memclock to get the best results. Hope this helps :) Title: Re: How to get +1300Kh/s with 2 280x ? Post by: ExPMCom on February 07, 2014, 10:07:19 AM My card 7970 - ASUS x 2 (1420 Kh/s):
cgminer.conf Code: { Title: Re: How to get +1300Kh/s with 2 280x ? Post by: irlandescoin on February 07, 2014, 01:33:16 PM I have 2 r9 280x connected, without crossfire on the same motherboard I use -I 13 -g 2 -w 256 --shaders 2048 and I get a maximum speed of 1100 kh/s. Do you know what line or what should I do to get around 1400 kh/s? My fan is at 100 power, tem is steady around 60-65 degrees and i''m using cgminer 3.5.0 my advice is: don't use crossfire , with 2 graphic cards u can get 1400 or 1480kh/s that script it what i use cgminer.exe --scrypt -o http://stratum4 -u user -p 123456 -I 13 -g 2 -w 256 --thread-concurrency 8193 --shaders 2048 --gpu-powertune 20 --temp-cutoff 90 --temp-overheat 85 --temp-target 71 --gpu-fan 43-100 --auto-fan --gpu-engine 1052 --gpu-memclock 1498 my another advice is: if your card is new not burn it now just use 530 kh/s after u can burn ,i know saphire is overclocked but is like a new car u need go easy :) thats script run 530 kh/s cgminer.exe --scrypt -o http://stratum -u user -p 123456 -I 14 -g 1 -w 256 --thread-concurrency 15232 --auto-fan --temp-target 65 Title: Re: How to get +1300Kh/s with 2 280x ? Post by: techcoin12 on February 07, 2014, 06:26:31 PM i agree .. cross fire is a waste for mining ...
it is also better for trouble shooting with out it plugged in 1040 core and 1500 mem is a nice lower electric cost solution and much more stable for most cards good luck |