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Author Topic: Only getting ~640 on sapphire 7970 dual-x OC Boost  (Read 447 times)
microzee (OP)
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May 21, 2014, 02:05:09 AM
 #1

Hello, as the title states no matter what I do, I cannot get past 640. First off, some info with my card:

http://www.techpowerup.com/vgabios/129658/sapphire-hd7970-3072-120926.html

That is my exact card. My card also has the same bios: 015.025.000.099.000000

After extensive testing, and overclocking, my best settings are
Code:
--scrypt -o stratum+tcp://ftc.give-me-coins.com:3336 -u microzee.ftc -p 7623 --thread-concurrency 8192 -I 13 -g 2 -w 256 --shaders 2048 --lookup-gap 2

And you guessed it. The default values.

I have done overclocking, which reduces my values to around 630 or less. I can run a stable memclock at 1700, and I have tried various gpu clocks, all of which do not help that much I also never see a significant drop, so I can never find the "sweet spot." Also, I thought you were supposed to run the highest thread-concurrency your gpu can take, but that also lowers my values. I found that I can run up to 20480. What can I do?

Please don't just post your settings and ask me to try them out especially if they have gpu-engine and memclock settings because that all depends on your certain card. Instead have me run tests or something.
SpeedDemon13
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May 21, 2014, 02:17:24 AM
 #2

Only use shader or tc, not both, it will override with the shader count. I run 1080core/1500mem at 1.1 volts with 20% power tune and get ~750 kh/s.

CRYPTSY exchange: https://www.cryptsy.com/users/register?refid=9017 BURST= BURST-TE3W-CFGH-7343-6VM6R BTC=1CNsqGUR9YJNrhydQZnUPbaDv6h4uaYCHv ETH=0x144bc9fe471d3c71d8e09d58060d78661b1d4f32 SHF=0x13a0a2cb0d55eca975cf2d97015f7d580ce52d85 EXP=0xd71921dca837e415a58ca0d6dd2223cc84e0ea2f SC=6bdf9d12a983fed6723abad91a39be4f95d227f9bdb0490de3b8e5d45357f63d564638b1bd71 CLAMS=xGVTdM9EJpNBCYAjHFVxuZGcqvoL22nP6f SOIL=0x8b5c989bc931c0769a50ecaf9ffe490c67cb5911
microzee (OP)
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May 21, 2014, 02:41:12 AM
 #3

Only use shader or tc, not both, it will override with the shader count. I run 1080core/1500mem at 1.1 volts with 20% power tune and get ~750 kh/s.

Do you recommend shaders or thread-concurrency? I'm getting ~660 right now, but I would still like to get into the 700 range. Any other advice?
SpeedDemon13
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May 21, 2014, 02:46:12 AM
 #4

Only use shader or tc, not both, it will override with the shader count. I run 1080core/1500mem at 1.1 volts with 20% power tune and get ~750 kh/s.

Do you recommend shaders or thread-concurrency? I'm getting ~660 right now, but I would still like to get into the 700 range. Any other advice?

tc

I've tried shaders before and it would only do 640~680 for me.

CRYPTSY exchange: https://www.cryptsy.com/users/register?refid=9017 BURST= BURST-TE3W-CFGH-7343-6VM6R BTC=1CNsqGUR9YJNrhydQZnUPbaDv6h4uaYCHv ETH=0x144bc9fe471d3c71d8e09d58060d78661b1d4f32 SHF=0x13a0a2cb0d55eca975cf2d97015f7d580ce52d85 EXP=0xd71921dca837e415a58ca0d6dd2223cc84e0ea2f SC=6bdf9d12a983fed6723abad91a39be4f95d227f9bdb0490de3b8e5d45357f63d564638b1bd71 CLAMS=xGVTdM9EJpNBCYAjHFVxuZGcqvoL22nP6f SOIL=0x8b5c989bc931c0769a50ecaf9ffe490c67cb5911
amacar
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May 21, 2014, 02:21:45 PM
 #5

Try using this configuration. I get 744khash with kalroth cgminer from here: http://k-dev.net/cgminer/

Code:
setx GPU_MAX_HEAP_SIZE 100
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
color 0F
cgminer --scrypt -o stratum+tcp://eu.wafflepool.com:3333 -u 1PdHRDrRxBsohPRJMxTa5cVLNriEbJUhdP -p x --thread-concurrency 11200 -I 13 --gpu-engine 1055 --gpu-memclock 1500 -w 256 -g 2 --no-submit-stale --lookup-gap 2 --failover-only -o stratum+tcp://backupPool -u user -p pass
microzee (OP)
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May 21, 2014, 07:37:53 PM
 #6

Try using this configuration. I get 744khash with kalroth cgminer from here: http://k-dev.net/cgminer/

Code:
setx GPU_MAX_HEAP_SIZE 100
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
color 0F
cgminer --scrypt -o stratum+tcp://eu.wafflepool.com:3333 -u 1PdHRDrRxBsohPRJMxTa5cVLNriEbJUhdP -p x --thread-concurrency 11200 -I 13 --gpu-engine 1055 --gpu-memclock 1500 -w 256 -g 2 --no-submit-stale --lookup-gap 2 --failover-only -o stratum+tcp://backupPool -u user -p pass

I got it up to 670 now, getting better, using optimized cgminer. I am not using your settings though because your tc, gpu-engine, and memclock all take it down to 620.

How do I use optimized scrypt binaries? there weren't any instructions that I could find in the thread.
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