Author

Topic: Sapphire HD7970 OC version with cgminer only getting 100Kh/s (Read 2095 times)

member
Activity: 69
Merit: 10
Try this -  go to your device manager winkey+pause, then select your onboard graphics and disable (even if you are certain that your graphics card is the default)

Reboot your PC, and hopefully you should be full speed.
member
Activity: 76
Merit: 10
i use bamt 5.0 seasonic x 1250 ,  8 gb ram, i flash the card with new bios and no change
member
Activity: 61
Merit: 10
Wait,
Are you using a 230Watt PSU for a card that uses more then 300watt on full load..?
If not, upgrading your RAM will solve the problem.

I think you mean WILL NOT solve the issue.

Whoops.  Embarrassed
member
Activity: 61
Merit: 10
Wait,
Are you using a 230Watt PSU for a card that uses more then 300watt on full load..?
If so, upgrading your RAM will NOT solve the problem. Unless you get a PSU that provides enough power.

Edit: I cannot into correct sentences.
legendary
Activity: 1596
Merit: 1000
Try flashing the card with non OC bios. Can be found on techpowerup.
member
Activity: 76
Merit: 10
I have same card and same problem 102-104 khs
Post when u fiind a fix pls.
hero member
Activity: 630
Merit: 500
There is no relevant driver info in that command output you posted.  Have you installed this? - http://support.amd.com/us/gpudownload/linux/Pages/radeon_linux.aspx?type=2.4.1&product=2.4.1.3.42&lang=English
legendary
Activity: 1316
Merit: 1000
Does this driver need to be replaced / updated?

fglrxinfo
display: :0.0  screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 7900 Series
OpenGL version string: 4.2.11332 Compatibility Profile Context
legendary
Activity: 1316
Merit: 1000
Two thoughts.  1) You only have 1GB of RAM and that matters with scrypt.  2) Your AMD OpenCL/drivers are probably not ideal.

Thanks - will get some more RAM from a friend tonight and try it out.
member
Activity: 93
Merit: 10
ethought, if BIOS of your card is below version 015.025.* update it(search in techpowerup, e.g.  Sapphire HD 7970 3072 MB BIOS(DUAL-X OC Boost). Then overclok it to 1025/1500 and try again.
hero member
Activity: 630
Merit: 500
Two thoughts.  1) You only have 1GB of RAM and that matters with scrypt.  2) Your AMD OpenCL/drivers are probably not ideal.
legendary
Activity: 1316
Merit: 1000
AMDOverdriveCtrl -i0
root@bamt-miner:/opt/miners/cgminer# INF: Nr. of Adapters: 4
INF: Adapter index: 0, active, ID:146809272, AMD Radeon HD 7900 Series
INF: Adapter index: 1, inact., ID:146809272, AMD Radeon HD 7900 Series
INF: Adapter index: 2, inact., ID:146809272, AMD Radeon HD 7900 Series
INF: Adapter index: 3, inact., ID:146809272, AMD Radeon HD 7900 Series
INF: Adapter index 1 choosen.
INF: Nr. of Performance Levels: 0
WRN: failed to read the GPU temperature.
WRN: failed to get fan speed information.
WRN: failed to read current fan speed.
WRN: failed to get Overdrive parameters.
WRN: failed to read current GPU activity.
WRN: failed to read default GPU/Memory clocks.
INF: Nr. of Displays to check 6
INF: Color temp disp(4) :
INF: current 6500K default 6500K
INF: min 4000K max 10000K step 100K
INF: Sunrise:5:0
INF: Sunset:20:36
legendary
Activity: 1316
Merit: 1000
legendary
Activity: 1316
Merit: 1000
Hi all -

Got my first HD7970 GPU today and after plugging it in and running litecoin BAMT I am only getting on average 100Kh/s.

I have tried just about every configuration I can find and still it always averages at around 100Kh/s.

Using an old Dell (Optiplex GX280) with P4 3.4Ghz cpu, 1Gb ram, no hdd, no other cards.

Could the stock dell power supply be the problem?

Tried:

--intensity 13 --worksize 256 -g 1 --shaders 2048 --thread-concurrency 8192 --auto-fan --gpu-memclock 1650  --gpu-engine 1110

--intensity 13 -g 2 --thread-concurrency 8192 --lookup-gap 2 --gpu-engine 1044 --gpu-memclock 1500

--shaders 2048 --thread-concurrency 8192 -I 14 -g 2 -w 256

--worksize 256 -v 1 -I 13 -g 2 --thread-concurrency 8192 --lookup-gap 2 --shaders 2048 --temp-target 75 --temp-overheat 80 --temp-cutoff 85 --auto-fan --gpu-fan 0-80

All produce the same result around 100Kh/s

Any ideas?
Jump to: