(2) XFX R9 290X GPUs - different Hash Rates

[JCR27]

Hi
I have (2) XFX R9 290X GPUs and I consistently get different (seems consistently different) Hash Rates:

Running: Windows 8.1 - 64 bit, CGMiner 3.5 with these settings:

--scrypt   -o stratum+tcp://eu.coinmine.pw:1111 -u UN -p x  --thread-concurrency 28500  -I 20  -w 512 --shaders 2048   --lookup-gap 2  --text-only  --expiry 1 -s 1 --no-submit-stale --queue 0  --gpu-powertune 20  -g 1  --gpu-engine 936


Hash rates I get (pretty consistent):

GPU0 ~ 710 kH/s
GPU1 ~ 860 kH/s


Any suggestions for getting consistent (~860 kH/s) for both GPUs?   Any suggestions for improved Hash Rate?

Thank You
Jim

[1715369860]

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[1715369860]

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[1715369860]

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[1715369860]

1715369860

[mrmork666]

http://www.overclock.net/t/1457836/determine-hynix-elpida-memory-on-290x-cards-based-on-product-number-before-buying-them-confirmation-needed-please-help-if-you-have-a-290x

[FoFFiFFe]

Hi
I have (2) XFX R9 290X GPUs and I consistently get different (seems consistently different) Hash Rates:

Running: Windows 8.1 - 64 bit, CGMiner 3.5 with these settings:

--scrypt   -o stratum+tcp://eu.coinmine.pw:1111 -u UN -p x  --thread-concurrency 28500  -I 20  -w 512 --shaders 2048   --lookup-gap 2  --text-only  --expiry 1 -s 1 --no-submit-stale --queue 0  --gpu-powertune 20  -g 1  --gpu-engine 936


Hash rates I get (pretty consistent):

GPU0 ~ 710 kH/s
GPU1 ~ 860 kH/s


Any suggestions for getting consistent (~860 kH/s) for both GPUs?   Any suggestions for improved Hash Rate?

Thank You
Jim

Do you get the same result when you switch the 2 cards on the motherboard? Try to know which ram is used on the cards with the Tahiti mem tool.