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Title: Help! 4x 7970 only doing 500 Kh/s ... LTC Post by: ragingazn628 on May 14, 2013, 03:49:11 PM I don't know what I'm doing wrong but each of my 7970 is only doing 500 Kh/s
Settings: CGMiner 3.1.1 Catalyst 13.4 Undervolted to 925mv on all cards Power Limit % at 20 Core Clock: 925mhz Memory Clock: 685mhz Temps: ~62C I know that Memory Clock does affect LTC Mining but it made no difference at 1575mhz for me (well only 10 Kh/s difference) but gave a lot more heat. CGMiner settings: cgminer.exe -o stratum+tcp://us.wemineltc.com:80 -u xxx.7970 -p xxx -o stratum+tcp://coinotron.com:3334 -u xxx.pcs.7970s -p xxx --thread-concurrency 8192 -I 13 -g 2 -w 256 --shaders 2048 --scrypt Any help would be appreciated! Title: Re: Help! 4x 7970 only doing 500 Kh/s ... LTC Post by: drlukacs on May 14, 2013, 03:52:37 PM For scrypt mining, you do not want low memory or low voltage.
Do not undervolt the card. Set memory clock to 1500 and core to 1050, and see what happens. Also worth trying: memory to 1375 and core to 833. But before you do any of that, please tell us the manufacturer of the cards. Title: Re: Help! 4x 7970 only doing 500 Kh/s ... LTC Post by: com911 on May 14, 2013, 03:55:10 PM Try (with default clock settings):
setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_USE_SYNC_OBJECTS 1 cgminer --scrypt --intensity 17 --worksize 256 --lookup-gap 2 --thread-concurrency 22528 Remove --shaders and -g (= --gpu-threads) You may change --intensity 17 from 17 to lower values, depending on your desirabe desktop usability. Undervolt (if you want so) only after testing these parameters. And watch results. Also watch VRM (not VRAM) temp. Title: Re: Help! 4x 7970 only doing 500 Kh/s ... LTC Post by: tom_o on May 14, 2013, 03:59:52 PM I don't know what I'm doing wrong but each of my 7970 is only doing 500 Kh/s Settings: CGMiner 3.1.1 Catalyst 13.4 Undervolted to 925mv on all cards Power Limit % at 20 Core Clock: 925mhz Memory Clock: 685mhz Temps: ~62C I know that Memory Clock does affect LTC Mining but it made no difference at 1575mhz for me (well only 10 Kh/s difference) but gave a lot more heat. CGMiner settings: cgminer.exe -o stratum+tcp://us.wemineltc.com:80 -u xxx.7970 -p xxx -o stratum+tcp://coinotron.com:3334 -u xxx.pcs.7970s -p xxx --thread-concurrency 8192 -I 13 -g 2 -w 256 --shaders 2048 --scrypt Any help would be appreciated! Theres your problem! You also need to have mem:core ratio of 0.72 or 0.57, different cards like different things. Title: Re: Help! 4x 7970 only doing 500 Kh/s ... LTC Post by: ronaldinho_07 on May 14, 2013, 04:02:25 PM I don't know what I'm doing wrong but each of my 7970 is only doing 500 Kh/s do you use Powercolor PCS 7970 ?Settings: CGMiner 3.1.1 Catalyst 13.4 Undervolted to 925mv on all cards Power Limit % at 20 Core Clock: 925mhz Memory Clock: 685mhz Temps: ~62C I know that Memory Clock does affect LTC Mining but it made no difference at 1575mhz for me (well only 10 Kh/s difference) but gave a lot more heat. CGMiner settings: cgminer.exe -o stratum+tcp://us.wemineltc.com:80 -u xxx.7970 -p xxx -o stratum+tcp://coinotron.com:3334 -u xxx.pcs.7970s -p xxx --thread-concurrency 8192 -I 13 -g 2 -w 256 --shaders 2048 --scrypt Any help would be appreciated! Try these settings first of all,you should use ccc 13.1 instead of 13.4 Cgminer 2.11.4 then set your core/mem around 1050/1250 (with this core/mem i set voltage at 1.063 in MSI afterburner) if you didnt use Powercolor PCS,you should flash giga 7950 F42 bios and cgminer setting is : --thread-concurrency 8192 -I 13 -g 2 --scrypt here my result http://i829.photobucket.com/albums/zz215/ronaldinho_tnt07/Untitled-1_zpsdc1bede5.jpg~original (http://s829.photobucket.com/user/ronaldinho_tnt07/media/Untitled-1_zpsdc1bede5.jpg.html) the weather is so hot now :( Title: Re: Help! 4x 7970 only doing 500 Kh/s ... LTC Post by: Maniac on May 14, 2013, 06:05:53 PM do you use Powercolor PCS 7970 ? Try these settings first of all,you should use ccc 13.1 instead of 13.4 Cgminer 2.11.4 then set your core/mem around 1050/1250 (with this core/mem i set voltage at 1.063 in MSI afterburner) if you didnt use Powercolor PCS,you should flash giga 7950 F42 bios and cgminer setting is : --thread-concurrency 8192 -I 13 -g 2 --scrypt here my result This does not work for me. :'( Is it shure to flash bios? Why 7950 but not 7970? My cards in this computer: Power Color AX7970 Power Color AX7970 XFX 7970 http://s020.radikal.ru/i700/1305/b7/e2ec2a5951a2.jpg Title: Re: Help! 4x 7970 only doing 500 Kh/s ... LTC Post by: ronaldinho_07 on May 14, 2013, 06:29:50 PM http://www.techpowerup.com/vgabios/127733/gigabyte-hd7950-3072-120905.html
flashing this bios into your PCC 7970,that's all you need to do. you can flash by using atiflash in dos google for tuts if you dont know how to do :D if the result were still bad,deleted files which were created by cgminer in cgminer folder eachtime you run it hope it works well |
