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Title: Problem 500kh/s with 7970 Post by: Ketill on January 22, 2014, 05:24:43 PM Hi everyone, i got a Sapphire 7970 stock (like this one : http://images.anandtech.com/doci/5319/sapphire_7970.jpg )
I try a lot of configuration but she can't get over 500kh/s, my actual .conf : --intensity 13 --shaders 2048 --thread-concurrency 8192 --worksize 256 -g 2 --gpu-engine 925 --gpu-memclock 1375 --gpu-powertune 20 Can't go higher on TC or HW appears. I try some flash with other BIOS but when i launch my rig, it say "No AMD driver detected" (or something ike this, if i reboot on normal bios it's ok). Should I uninstall drivers before flashing my GPU ? I try on BAMT, same hashrate. So what is the slution for this ? Should I try other BIOS ? Which one ? Thanks a lot and sorry for my pretty bad english ;) Title: Re: Problem 500kh/s with 7970 Post by: JohnDorien on January 22, 2014, 05:26:21 PM Is it a vapor-x? Had the same shitty hashrate.
For some strange reason it started hashing at stable 730 when i undervolted... maybe you want to try this Title: Re: Problem 500kh/s with 7970 Post by: Ketill on January 22, 2014, 05:31:02 PM No it's not a vapor-x see the photo.
I undervolt under AMD Catalyst Control Center ? Which undervolt for your 730kh/s ? Title: Re: Problem 500kh/s with 7970 Post by: JuanHungLo on January 22, 2014, 06:01:26 PM Been there, done that.
If all else fails I recommend COMPLETELY uninstalling all AMD drivers and SDK. Use something like tuneup utilities to remove all traces from the registry. Then reinstall ONLY the drivers from AMD Catalyst™ 13.11 Beta Driver for Windows and then ALL of AMD-APP-SDK-v2.9-Windows-64.exe. Then use the following settings: setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_USE_SYNC_OBJECTS 1 cgminer.exe --scrypt -o stratum+tcp://gigahash.wemineltc.com:3334 -u pool user name.1 -p password --thread-concurrency 8192 --intensity 13 --queue 0 --worksize 256 --auto-fan --temp-target 80 --temp-overheat 90 --temp-cutoff 95 --gpu-engine 1050 --gpu-memclock 1500 --gpu-vddc 1.2 --no-submit-stale -g 2 --lookup-gap 2 If successful, then start lowering the gpu-vddc a little at a time until you get HW errors. You should get 730 Kh/s easy. Title: Re: Problem 500kh/s with 7970 Post by: Ketill on January 22, 2014, 07:32:26 PM Been there, done that. If all else fails I recommend COMPLETELY uninstalling all AMD drivers and SDK. Use something like tuneup utilities to remove all traces from the registry. Then reinstall ONLY the drivers from AMD Catalyst™ 13.11 Beta Driver for Windows and then ALL of AMD-APP-SDK-v2.9-Windows-64.exe. Then use the following settings: setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_USE_SYNC_OBJECTS 1 cgminer.exe --scrypt -o stratum+tcp://gigahash.wemineltc.com:3334 -u pool user name.1 -p password --thread-concurrency 8192 --intensity 13 --queue 0 --worksize 256 --auto-fan --temp-target 80 --temp-overheat 90 --temp-cutoff 95 --gpu-engine 1050 --gpu-memclock 1500 --gpu-vddc 1.2 --no-submit-stale -g 2 --lookup-gap 2 If successful, then start lowering the gpu-vddc a little at a time until you get HW errors. You should get 730 Kh/s easy. 400kh/s :/ Title: Re: Problem 500kh/s with 7970 Post by: Vivisector999 on January 22, 2014, 08:27:08 PM Download Trixx here: https://www.sapphireselectclub.com/ssc/TriXX/
Trixx has all the controls to change the voltage and clocks on your card. Next: Bump the gpu engine to 1055, bump the memory clock to 1500. Adjust the voltage until you can run it for hours without hardware errors (Takes a but of playing around to get it perfect). On my card it is 1.175 V. Might be different on yours Here is my .bat after all those changes. setx GPU_MAX_ALLOC_PERCENT 100 cgminer.exe --scrypt -o netcodepool.org:3333 -u user.name -p password --thread-concurrency 16320 --gpu-engine 1055 --gpu-memclock 1500 --no-submit-stale --intensity 13 --worksize 256 -g 2 My card with those settings usually gets around 720-730. When I first started before Trixx, I was getting around 500 as well. |