Again if anyone can help and wants to make a few dollars - hit me up. I know some guys don't want to get paid as they want to pay it forward, but ill still throw you a few bucks.
Thanks again everyone for the responses.
Topic: Anyone here consider themselves a master at overclocking? (Read 397 times)
Under/over.. either way I can get more hashing power with less power at the wall.. lol
Again if anyone can help and wants to make a few dollars - hit me up. I know some guys don't want to get paid as they want to pay it forward, but ill still throw you a few bucks.
Thanks again everyone for the responses.
Again if anyone can help and wants to make a few dollars - hit me up. I know some guys don't want to get paid as they want to pay it forward, but ill still throw you a few bucks.
Thanks again everyone for the responses.
I need some help w a couple of rigs.. =)
I used to be a master of overclocking. But I found it is not very profitable to overclock. So I underclock. It is more difficult.
Every card have different limits so you either use different speeds for each cards or use the lowest OC in a rig for all the cards.
And then different algos have different levels of overclockability - as it were - as they use cards differently. For example, you could get +300 Mhz core on some algos with no problem which would instantly crash on others. So if you mine different algos you also have to use the lowest OC.
And some algos prefer core clock, some prefer memory clock OC. And since the cards are handling power pretty intelligently, for some algos it's beneficial if you downclock the memory so the card can allocate more power to core therefore boost higher. Rarely it's the opposite.
Also, an overclock might look stable, in reality it might not be and it will take a couple of hours or even days for the card to crash.
And then different algos have different levels of overclockability - as it were - as they use cards differently. For example, you could get +300 Mhz core on some algos with no problem which would instantly crash on others. So if you mine different algos you also have to use the lowest OC.
And some algos prefer core clock, some prefer memory clock OC. And since the cards are handling power pretty intelligently, for some algos it's beneficial if you downclock the memory so the card can allocate more power to core therefore boost higher. Rarely it's the opposite.
Also, an overclock might look stable, in reality it might not be and it will take a couple of hours or even days for the card to crash.
Im using only amd cards for mining , but the above statement its absolutely true for AMD cards also
I'm guessing you're using AMD hardware (there are no BIOS mods for modern nvidia afaik) in which case you should probably forget most of what I said and wait for an AMD miner's response. 
Hey there. Thanks for the detailed response. I have tried using different bios's etc.. I am at my wits end with it! I am trying to locate someone that is very knowledgeable with it that I could pay a little bit to get my cards running at their optimum! I am ready to throw these things off the roof! lol..
Ive tried just about everything but the right thing apparently!
I have tried using different bios's etc.. I am at my wits end with it! I am trying to locate someone that is very knowledgeable with it that I could pay a little bit to get my cards running at their optimum! I am ready to throw these things off the roof! lol..Ive tried just about everything but the right thing apparently!
I'm not a master at overclocking and I only ever mined with Nvidia hardware but here's what I know:
Every card have different limits so you either use different speeds for each cards or use the lowest OC in a rig for all the cards.
And then different algos have different levels of overclockability - as it were - as they use cards differently. For example, you could get +300 Mhz core on some algos with no problem which would instantly crash on others. So if you mine different algos you also have to use the lowest OC.
And some algos prefer core clock, some prefer memory clock OC. And since the cards are handling power pretty intelligently, for some algos it's beneficial if you downclock the memory so the card can allocate more power to core therefore boost higher. Rarely it's the opposite.
Also wirth noting that memory modules can get really hot (95+°C) on some cards mining memory heavy algos such as Eth (source). Which you can't see with software as there are no temp sensors there usually. But with the right hardware you can see for yourself.
And while we're at temps the voltage regulation modules also can get super hot if cards are overvolted. And some models have very poor VRM cooling.
Also, an overclock might look stable, in reality it might not be and it will take a couple of hours or even days for the card to crash.
Efficiency is more important these days so reducing power limit and just letting the card boost as high as it does with a mild OC is the safest bet and figuring out the maximum before crashing levels of OC just doesn't worth the effort - especially for multiple rigs.
My recommendation is to just set a mild OC across rigs and if cards crash in a day or two decrease the OC (and if it always happen to the same cards, note them and downclock only those) and if not, then you can increase the OC.
Every card have different limits so you either use different speeds for each cards or use the lowest OC in a rig for all the cards.
And then different algos have different levels of overclockability - as it were - as they use cards differently. For example, you could get +300 Mhz core on some algos with no problem which would instantly crash on others. So if you mine different algos you also have to use the lowest OC.
And some algos prefer core clock, some prefer memory clock OC. And since the cards are handling power pretty intelligently, for some algos it's beneficial if you downclock the memory so the card can allocate more power to core therefore boost higher. Rarely it's the opposite.
Also wirth noting that memory modules can get really hot (95+°C) on some cards mining memory heavy algos such as Eth (source). Which you can't see with software as there are no temp sensors there usually. But with the right hardware you can see for yourself.
And while we're at temps the voltage regulation modules also can get super hot if cards are overvolted. And some models have very poor VRM cooling.
Also, an overclock might look stable, in reality it might not be and it will take a couple of hours or even days for the card to crash.
Efficiency is more important these days so reducing power limit and just letting the card boost as high as it does with a mild OC is the safest bet and figuring out the maximum before crashing levels of OC just doesn't worth the effort - especially for multiple rigs.
My recommendation is to just set a mild OC across rigs and if cards crash in a day or two decrease the OC (and if it always happen to the same cards, note them and downclock only those) and if not, then you can increase the OC.
I need some help w a couple of rigs.. =)
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