I have a Radeon 7850 and I use Reaper (best miner in my opinion), it's rated at ~350Kh/s according to the mining comparison page... Reaper tells me I'm getting 327.8Kh/s, the pool (notroll.in) tells me I'm getting between 350 and 400 on average, I've seen it go as low as 200(rarely) and as high as 615 (once).
I think the problem is your miner, because I was having the same problem with Cgminer, and that's why I switched to Reaper
Topic: Tests with Radeon 7950 (Read 2850 times)
I think I've resolved this.
I was originally using GUIMiner v.02 which came bundled with cgminer 2.10.
I am now using GUIMiner v.03 which uses cgminer 2.11.3
This solves issues with my Radeon 7950
Found latest here: https://bitcointalksearch.org/topic/m.1256502
I was originally using GUIMiner v.02 which came bundled with cgminer 2.10.
I am now using GUIMiner v.03 which uses cgminer 2.11.3
This solves issues with my Radeon 7950
Found latest here: https://bitcointalksearch.org/topic/m.1256502
Just to chime in as a 7950 owner, mine is @ 900mhz and it's usually at 460 Mhash/s in GUIMiner -f 60. Not sure if the flags affect performance but more details.
Just clarifying I'm talking Litecoins and Khash/s
Just to chime in as a 7950 owner, mine is @ 900mhz and it's usually at 460 Mhash/s in GUIMiner -f 60. Not sure if the flags affect performance but more details.
Well I gave Coinotron a try today and the same issue. So it doesn't seem to be a pool issue. No pretty graph on their pool to show you but:
GUIMiner (litecoin edit)
Default settings for Radeon 7950 = Steady 296kh = Pool speed ~300kh
Change Intensity to 16 = Steady 484kh = Pool speed ~100kh
Tested over at least 100 accepted shares on both Stratum and not. Same result.
So it seems for some reason the increased hashing speed locally is resulting in lower hashing speed on the pool.
I read another guy saw a similar issue: http://forum.litecoin.net/index.php/topic,1957.0.html
I think it does matter what hash speed is reported on your pool's end as that's the result of valid shares and rewards dished out.
Still unresolved.
GUIMiner (litecoin edit)
Default settings for Radeon 7950 = Steady 296kh = Pool speed ~300kh
Change Intensity to 16 = Steady 484kh = Pool speed ~100kh
Tested over at least 100 accepted shares on both Stratum and not. Same result.
So it seems for some reason the increased hashing speed locally is resulting in lower hashing speed on the pool.
I read another guy saw a similar issue: http://forum.litecoin.net/index.php/topic,1957.0.html
I think it does matter what hash speed is reported on your pool's end as that's the result of valid shares and rewards dished out.
Still unresolved.
Do not use the pool to measure you're hash rate, only measure it locally.
The reason is you're introducing more variables, such as how the pool averages the hash rate it's calculating, internet connection, rejects etc etc.
Secondly, the pool never actually receives your hash rate, it just sees X amount of shares per minute, hour, whatever for the pool and says "Ok, if they are sharing at this rate they must be hashing about Y kh/s". In general over time this will average out to be about correct, as luck plays a smaller factor long term but if you're trying to accurately benchmark it's not the way to go.
Again, only look at the figure in CGMiner (or whatever program you're using).
The reason is you're introducing more variables, such as how the pool averages the hash rate it's calculating, internet connection, rejects etc etc.
Secondly, the pool never actually receives your hash rate, it just sees X amount of shares per minute, hour, whatever for the pool and says "Ok, if they are sharing at this rate they must be hashing about Y kh/s". In general over time this will average out to be about correct, as luck plays a smaller factor long term but if you're trying to accurately benchmark it's not the way to go.
Again, only look at the figure in CGMiner (or whatever program you're using).
Is it still worth mining with GPU now that ASICs are out?
ASICs are hardly out. Check out some calculators, so you can see for yourself that mining is not dead.
Yet.
In a month or two, the answer might be different.
The ASICs that are coming out are for bitcoin, not litecoin.
Is it still worth mining with GPU now that ASICs are out?
ASICs are hardly out. Check out some calculators, so you can see for yourself that mining is not dead.
Yet.
In a month or two, the answer might be different.
Is it still worth mining with GPU now that ASICs are out?
hoping to get my 7950 soon . currently using http://litecoinpool.org/ pool. you can give that a try .
Try coinotron.com just for a test, it seems pretty accurate to me at relaying what the miner is telling me my hashes are at. Sometimes it's a little lower, sometimes its more but on average it's on par.
Will try coinotron.com right now. Do some more tests and report back. Thanks.
Try coinotron.com just for a test, it seems pretty accurate to me at relaying what the miner is telling me my hashes are at. Sometimes it's a little lower, sometimes its more but on average it's on par.
I agree that there might be somthing going on with the pool. I know that Ozcoin has been suffering with DDoS attacks. That might have somthing to do with it.
Mining Pool: https://lc.ozcoin.net
It's confusing that I can get my reading to ~550khash/s on GUIMiner if I up the settings but it translates to a lower outcome of khash/s in the pool.
It's confusing that I can get my reading to ~550khash/s on GUIMiner if I up the settings but it translates to a lower outcome of khash/s in the pool.
I have a feeling that the problem might be with the pool. Try another and see how it goes.
Yeah I agree that 300Khash is low for a 7950. Damned if I know why it's that low though.
Ok, what pool are you using? Because 300khash/s is EXTREMELY low for a 7950
Mining Pool: https://lc.ozcoin.net
It's confusing that I can get my reading to ~550khash/s on GUIMiner if I up the settings but it translates to a lower outcome of khash/s in the pool.
Ok, what pool are you using? Because 300khash/s is EXTREMELY low for a 7950
The OP is mining LTC, so he is supposed to be getting khash/s, not mhash/s, but 300 is still way too low. I will be getting my 7950 tomorrow and I am hoping and expecting 550-600 khash/s at a minimum.
Ok, what pool are you using? Because 300khash/s is EXTREMELY low for a 7950
So on a 1 day average your getting 200khash/s or mhash/s? I as well use a 7950 to mine but i am averaging ~550mhash/s.
Forget the average line (it's skewed by previous low testing on my mac)
I'm averaging about ~300khash/s
If I increase intensity or concurrency settings I actually get a lower hash rate in my mining pool.
So on a 1 day average your getting 200khash/s or mhash/s? I as well use a 7950 to mine but i am averaging ~550mhash/s.
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