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Showing 8 of 8 results by Getawhale
Re: What catalyst and sdk drivers are you using for 7970 (windows)
Have an update. Figured I'd bump.
Reference OEM 7970, 13.3 beta, SDK that came with it. CGMiner 2.11.4, Diablo kernel, Worksize 256, Default vectors (1), intensity 11, 2 GPU Threads (default). Don't need to specify any other options aside from pool and GPU speeds. 1185 Core, 300 memory.
713.2 MHash/sec, or ~0.60186 MHash/MHz.
Running with 1 GPU thread was about 700 on the nose. Also, I have not experimented with all the combinations quite yet.
Edit: On another 7970, I was able to get slightly different core clocks, namely 1220/300, and I tested other kernel combinations and let them hash out for about 4-8 hours to get a good average that wouldn't fluctuate. Increasing vectors decreased hashrate significantly. Increasing threads beyond 2 either decreased hashrate significantly or caused a driver crash and recover. The default GPU threads (2) and default vectors (1) seem to be optimal.
730.1 MHash/sec (0.59844 MHash/MHz) with poclbm kernel and worksize=256
731.3 MHash/sec (0.59943 MHash/MHz) with poclbm kernel and worksize=128
728.1 MHash/sec (0.59680 MHash/MHz) with poclbm kernel and worksize=64 (This is the default setting.)
730.8 MHash/sec (0.59902 MHash/MHz) with diablo kernel and worksize=256
731.7 MHash/sec (0.59975 MHash/MHz) with diablo kernel and worksize=128
726.6 MHash/sec (0.59557 MHash/MHz) with diablo kernel and worksize=64
The hashrate per MHz seems to be slightly lower, probably because of a lower RAM:Core ratio. I will increase it slightly to see if I can eek out a slightly better MHash/MHz.
Reference OEM 7970, 13.3 beta, SDK that came with it. CGMiner 2.11.4, Diablo kernel, Worksize 256, Default vectors (1), intensity 11, 2 GPU Threads (default). Don't need to specify any other options aside from pool and GPU speeds. 1185 Core, 300 memory.
713.2 MHash/sec, or ~0.60186 MHash/MHz.
Running with 1 GPU thread was about 700 on the nose. Also, I have not experimented with all the combinations quite yet.
Edit: On another 7970, I was able to get slightly different core clocks, namely 1220/300, and I tested other kernel combinations and let them hash out for about 4-8 hours to get a good average that wouldn't fluctuate. Increasing vectors decreased hashrate significantly. Increasing threads beyond 2 either decreased hashrate significantly or caused a driver crash and recover. The default GPU threads (2) and default vectors (1) seem to be optimal.
730.1 MHash/sec (0.59844 MHash/MHz) with poclbm kernel and worksize=256
731.3 MHash/sec (0.59943 MHash/MHz) with poclbm kernel and worksize=128
728.1 MHash/sec (0.59680 MHash/MHz) with poclbm kernel and worksize=64 (This is the default setting.)
730.8 MHash/sec (0.59902 MHash/MHz) with diablo kernel and worksize=256
731.7 MHash/sec (0.59975 MHash/MHz) with diablo kernel and worksize=128
726.6 MHash/sec (0.59557 MHash/MHz) with diablo kernel and worksize=64
The hashrate per MHz seems to be slightly lower, probably because of a lower RAM:Core ratio. I will increase it slightly to see if I can eek out a slightly better MHash/MHz.
May I ask if you've done anything with your voltage? Or just left it be?
Hello,
I've been floating (lurking) around the community for a while now. I was previously mining on my older video card. Just picked up a 7970.
Would like to be un-newbied because I have an issue with CGMiner now, and I don't feel like I'll get the help I need on the Newbies board. That said, I have tried posting a thread on here already. (Which has received.. very few views.) I feel like this Forum is a good large community of folks from different mining pools and different backgrounds, and someone on another board is bound to have some insight on my issue.
I believe I have an above-average understanding of Bitcoin and also of mining, since I've graduated to mining from the command line, and tweaking my video card clock rates for mining.
Hope you can help me out! Thanks!
I've been floating (lurking) around the community for a while now. I was previously mining on my older video card. Just picked up a 7970.
Would like to be un-newbied because I have an issue with CGMiner now, and I don't feel like I'll get the help I need on the Newbies board. That said, I have tried posting a thread on here already. (Which has received.. very few views.) I feel like this Forum is a good large community of folks from different mining pools and different backgrounds, and someone on another board is bound to have some insight on my issue.
I believe I have an above-average understanding of Bitcoin and also of mining, since I've graduated to mining from the command line, and tweaking my video card clock rates for mining.
Hope you can help me out! Thanks!
CGMiner - Average Hashrate much lower over time than Current
Hello! I am new and just switched over from GUIMiner to CGminer, on a new Radeon 7970 that I picked up.
When I run the card for, say, a half hour or an hour or so, it runs at just about 700MH/s on the nose, pretty steadily.
But when I run it overnight, or while I'm at work (for extended periods, say 8 hours,) I see that even though it's running at about 700MH/s still, my AVERAGE hashrate over that longer time period is about 350MH/s. Uhhh? I'm not sure what is causing this to drop by so much.
I use CGWatcher to log Hardware/Nonce fails/whatever, but the logs are limited. It seems there were no hardware failures. And no getwork or remote failures. And I'm certain my Internet didn't drop. So any ideas why my average would drop by so much?
I'm mining at Eclipse. I've mined on their US2 and US3 servers. Any questions about my setup just let me know.
Thanks for any insight!
EDIT: Neglected to mention, I've tried some Google searching and haven't been able to find much on this issue
When I run the card for, say, a half hour or an hour or so, it runs at just about 700MH/s on the nose, pretty steadily.
But when I run it overnight, or while I'm at work (for extended periods, say 8 hours,) I see that even though it's running at about 700MH/s still, my AVERAGE hashrate over that longer time period is about 350MH/s. Uhhh? I'm not sure what is causing this to drop by so much.
I use CGWatcher to log Hardware/Nonce fails/whatever, but the logs are limited. It seems there were no hardware failures. And no getwork or remote failures. And I'm certain my Internet didn't drop. So any ideas why my average would drop by so much?
I'm mining at Eclipse. I've mined on their US2 and US3 servers. Any questions about my setup just let me know.
Thanks for any insight!
EDIT: Neglected to mention, I've tried some Google searching and haven't been able to find much on this issue
Re: Offering PayPal for Bitcoin? You're likely to be labeled a scammer - Read why
I was thinking about PayPal and Bitcoin this morning, actually. With Bitcoin becoming very large, and PayPal being a business, I imagined them maybe wanting to somehow support or offer Bitcoins (down the road.)
Regardless of why they are super-against this idea currently (which I can understand), I thought of one main point. If they were to keep the same model they currently use for currency exchanges and transactions, specifically the FEES they impose, they would be at a HUGE competitive disadvantage in the world of Bitcoin. If I can already go to MtGox and transfer USD/BTC without fees, why would I want to go to PayPal and shave them off part of the transaction as a fee?
I am admittedly new and haven't yet converted any BTC to USD, but what are your thoughts on this? Even if it's theoretical.
Regardless of why they are super-against this idea currently (which I can understand), I thought of one main point. If they were to keep the same model they currently use for currency exchanges and transactions, specifically the FEES they impose, they would be at a HUGE competitive disadvantage in the world of Bitcoin. If I can already go to MtGox and transfer USD/BTC without fees, why would I want to go to PayPal and shave them off part of the transaction as a fee?
I am admittedly new and haven't yet converted any BTC to USD, but what are your thoughts on this? Even if it's theoretical.