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post #1601 of 22529
Quote:
Originally Posted by wedge View Post

Yes. Easily.

Hashing is not bandwidth limited, not even a little bit.

I achieve the same high hashing speed using 1x to 16x risers that I do if the card is plugged directly into the motherboard.
Quote:
Originally Posted by burksdb View Post

I'm only running one 1x to 16x riser right now, but I'm pulling the full 690 kh/s without any issues

Wow, thanks for the quick reply. That's awesome news.
post #1602 of 22529
These 6950's were to warm so I ghetto rigged 3 more fans inside to just blow air everywhere and try to remove any deadzones lol.

Seems to be regulating decently now, the Twin Frozr is quite a bit louder than the Sapphires cooler, but it is better. Does someone have an example cgminer.conf for a 2 gpu setup? From what I've seen it looks like you can add values for 2nd gpu by just adding the value after a comma.

What I mostly want to know is how the pools and workers should be listed for multi-gpu. If I list 2 or more pools in the config, will the first card use the first worker/pool and the 2nd card use the 2nd pool/worker?

Hmm it seems like both gpu's are contributing to the same pool/worker right now. Is that ok? I was thinking workers were supposed to be separated by GPU, or maybe it's by physical machine instead?
post #1603 of 22529
Quote:
Originally Posted by Faster_is_better View Post

These 6950's were to warm so I ghetto rigged 3 more fans inside to just blow air everywhere and try to remove any deadzones lol.

Seems to be regulating decently now, the Twin Frozr is quite a bit louder than the Sapphires cooler, but it is better. Does someone have an example cgminer.conf for a 2 gpu setup? From what I've seen it looks like you can add values for 2nd gpu by just adding the value after a comma.

What I mostly want to know is how the pools and workers should be listed for multi-gpu. If I list 2 or more pools in the config, will the first card use the first worker/pool and the 2nd card use the 2nd pool/worker?

Hmm it seems like both gpu's are contributing to the same pool/worker right now. Is that ok? I was thinking workers were supposed to be separated by GPU, or maybe it's by physical machine instead?
Here's my exact config for a 7950 and 7850, 7950 first, then 7850 after the comma:
Code:
setx GPU_MAX_ALLOC_PERCENT 100
cgminer.exe --gpu-platform 0 --scrypt -o stratum+tcp://pool1.us.multipool.in:3343 -u user -p lolnope.jpg -I 20,17 --lookup-gap 2,2 --thread-concurrency 21712,8192 --worksize 256,256 --gpu-engine 1100,1050 --gpu-memclock 1400,1350 --auto-fan --temp-target 67,67 --temp-hysteresis 2 --temp-overheat 80,80 --no-submit-stale
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post #1604 of 22529
Quote:
Originally Posted by cam51037 View Post

Quote:
Originally Posted by Faster_is_better View Post

These 6950's were to warm so I ghetto rigged 3 more fans inside to just blow air everywhere and try to remove any deadzones lol.

Seems to be regulating decently now, the Twin Frozr is quite a bit louder than the Sapphires cooler, but it is better. Does someone have an example cgminer.conf for a 2 gpu setup? From what I've seen it looks like you can add values for 2nd gpu by just adding the value after a comma.

What I mostly want to know is how the pools and workers should be listed for multi-gpu. If I list 2 or more pools in the config, will the first card use the first worker/pool and the 2nd card use the 2nd pool/worker?

Hmm it seems like both gpu's are contributing to the same pool/worker right now. Is that ok? I was thinking workers were supposed to be separated by GPU, or maybe it's by physical machine instead?
Here's my exact config for a 7950 and 7850, 7950 first, then 7850 after the comma:
Code:
setx GPU_MAX_ALLOC_PERCENT 100
cgminer.exe --gpu-platform 0 --scrypt -o stratum+tcp://pool1.us.multipool.in:3343 -u user -p lolnope.jpg -I 20,17 --lookup-gap 2,2 --thread-concurrency 21712,8192 --worksize 256,256 --gpu-engine 1100,1050 --gpu-memclock 1400,1350 --auto-fan --temp-target 67,67 --temp-hysteresis 2 --temp-overheat 80,80 --no-submit-stale

Ok good, do I need to double every variable though? I see you have temp-hysteris with only one value, but it looks like all the GPU related values have 2 each. I'm curious If I leave something like lookup-gap with only 1 value, will that mean the 1 value is applied to both gpu's or does that mean it is applied to first gpu, then 2nd gpu will just default to some other value?

This might explain why my first card dropped 200kh/s when I set it in the second slot, and my other card gained 200kh/s, if I have to actually declare 2 values for everything. I guess I will change it and see, but would still be nice to know some of these cgminer intricacies.
post #1605 of 22529
Quote:
Originally Posted by Faster_is_better View Post

Ok good, do I need to double every variable though? I see you have temp-hysteris with only one value, but it looks like all the GPU related values have 2 each. I'm curious If I leave something like lookup-gap with only 1 value, will that mean the 1 value is applied to both gpu's or does that mean it is applied to first gpu, then 2nd gpu will just default to some other value?

This might explain why my first card dropped 200kh/s when I set it in the second slot, and my other card gained 200kh/s, if I have to actually declare 2 values for everything. I guess I will change it and see, but would still be nice to know some of these cgminer intricacies.
Yes if there is only one value in certain slots it's applied to both cards.

I think in your case you might want to try just using a single card configuration for a 6970, because I'm thinking if you run the .bat file with a config such as -I 18 --lookup-gap 2 --thread-concurrency 15000 it would apply those settings to both cards. The only reason I use different settings inside this config is because I use a 7950 and a 7850 and of course they don't use the same settings.

But if using only a single number for each configuration doesn't work, then add a "," and repeat the same variable after, then it should work. thumb.gif

Hope that makes sense, I kind of confused myself while writing that. rolleyes.gif
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post #1606 of 22529
Quote:
Originally Posted by cam51037 View Post

Quote:
Originally Posted by Faster_is_better View Post

Ok good, do I need to double every variable though? I see you have temp-hysteris with only one value, but it looks like all the GPU related values have 2 each. I'm curious If I leave something like lookup-gap with only 1 value, will that mean the 1 value is applied to both gpu's or does that mean it is applied to first gpu, then 2nd gpu will just default to some other value?

This might explain why my first card dropped 20kh/s when I set it in the second slot, and my other card gained 20kh/s, if I have to actually declare 2 values for everything. I guess I will change it and see, but would still be nice to know some of these cgminer intricacies.
Yes if there is only one value in certain slots it's applied to both cards.

I think in your case you might want to try just using a single card configuration for a 6970, because I'm thinking if you run the .bat file with a config such as -I 18 --lookup-gap 2 --thread-concurrency 15000 it would apply those settings to both cards. The only reason I use different settings inside this config is because I use a 7950 and a 7850 and of course they don't use the same settings.

But if using only a single number for each configuration doesn't work, then add a "," and repeat the same variable after, then it should work. thumb.gif

Hope that makes sense, I kind of confused myself while writing that. rolleyes.gif

Yep that makes sense. Once I OC the 2nd card, if I can... then I will have to adjust values for both cards anyway. Good to know 1 value will apply to multiple cards though. Dang they are running so hot... gotta fix it somehow.
post #1607 of 22529
Quote:
Originally Posted by Faster_is_better View Post

Yep that makes sense. Once I OC the 2nd card, if I can... then I will have to adjust values for both cards anyway. Good to know 1 value will apply to multiple cards though. Dang they are running so hot... gotta fix it somehow.
Are they in a case?

If you have the room and they are in a case, lie the case backside down and lift off the side panel, so the heat vents out of the case into the open air, I find that helps a lot.
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post #1608 of 22529
Quote:
Originally Posted by cam51037 View Post

Quote:
Originally Posted by Faster_is_better View Post

Yep that makes sense. Once I OC the 2nd card, if I can... then I will have to adjust values for both cards anyway. Good to know 1 value will apply to multiple cards though. Dang they are running so hot... gotta fix it somehow.
Are they in a case?

If you have the room and they are in a case, lie the case backside down and lift off the side panel, so the heat vents out of the case into the open air, I find that helps a lot.

Ya they are in a case, side panel is already off. The back of the case is actually getting very hot from the heat blowing onto it, I'm not sure how much putting it on the side would help, it would help radiate I'm sure and I may have to try it. I suppose last resort will be to hook up the 7k RPM Delta that sounds like a leaf blower with external power supply lmao. tongue.gif

I thought of some reworking I can do though, to get some more airflow so I will try that next. They were doing alright for a while staying under 75C, then at some point the top card shot to 80C +/- and bottom card is throttling itself between 80-99% load and keeping under temp, not sure why its throttling though, possibly it can't maintain.
post #1609 of 22529
I put better TIM on my 6970s and dropped temp about 8C from the stock crap TIM they had on iton the one I put ZeroTherm ZT100 on and the other I put Arctic Ceramique on only 1-2C. Need to redo that one. Both running 955/1475 @ 1.150v and 520kh/s.
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post #1610 of 22529
Quote:
Originally Posted by bluestang View Post

I put better TIM on my 6970s and dropped temp about 8C from the stock crap TIM they had on iton the one I put ZeroTherm ZT100 on and the other I put Arctic Ceramique on only 1-2C. Need to redo that one. Both running 955/1475 @ 1.150v and 520kh/s.

Will it void sapphires warranty to replace tim on 7870s and 7950s?
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