Ethereum mining still profitable?

[coinyard]

How do you go about under volt cards? Can you do this though MSI afterburner, or do you need to use some custom Bios update for cards?

Just tick 'unlock voltage control' in AB compatibility properties, after that you can move core voltage slider in the opening screen.

not with nvidia

True, with nvidia you can't undervolt. Only way to save power is to lower TDP which actually works quite well on ethereum mining. My 5x970 can do 83MH@600w from the wall.

i'm reading now about an issue coming from the OS for six nvidia 970 or 980, is this true with amd also

and was it solved or still ongoing? what is the problem exactly?

With AMD cards, you can have up to 8 GPU in a system. You can change the voltage with MSI on those 8 GPU without problem.

[1715340248]

1715340248

[QuintLeo]

Precision-X (EVGA utility) can do TDP setting under Windows.

I believe it's handled by nvidia-settings or nvidia-smi under Linux.

I suspect there are other options under Windows, but I tried MSI's Afterburner and strongly DISliked it (dark text on dark background VERY HARD TO READ issue as I recall).

[cloh76]

but the question is, if i undervolt my 390s will that impact the hashrate?   Currently I should be able to get roughly 32 MH/s per 390.   If I undevolt , will it still hash at the same rate or will it be less?

[adaseb]

but the question is, if i undervolt my 390s will that impact the hashrate?   Currently I should be able to get roughly 32 MH/s per 390.   If I undevolt , will it still hash at the same rate or will it be less?

Yes, hashrate will be the same. Only problem is if you go too low on the voltage, it will just keep crashing.

[cloh76]

but the question is, if i undervolt my 390s will that impact the hashrate?   Currently I should be able to get roughly 32 MH/s per 390.   If I undevolt , will it still hash at the same rate or will it be less?

Yes, hashrate will be the same. Only problem is if you go too low on the voltage, it will just keep crashing.

Nice.  Thanks.  Is there a detailed guide for undervolting an R9 390 somewhere?  Something that tells me what the best settings are?

[Liquid71]

but the question is, if i undervolt my 390s will that impact the hashrate?   Currently I should be able to get roughly 32 MH/s per 390.   If I undevolt , will it still hash at the same rate or will it be less?

Yes, hashrate will be the same. Only problem is if you go too low on the voltage, it will just keep crashing.

Nice.  Thanks.  Is there a detailed guide for undervolting an R9 390 somewhere?  Something that tells me what the best settings are?

There's a thread about it https://bitcointalk.org/index.php?topic=1465128.0

[QuintLeo]

Found something interesting in NVidia-smi last night - it shows the wattage (AND the TDP limit) as part of it's standard list (-l option) command.

 Dual GTX 950s in one box, the one that X is actually running on eating about 85 watts, the other one about 75, running about 10MH/s each with no undervolt and stock clocks (they DO seem to be autoboosting quite nicely, and I DID kick the fan settings up to something SANE).

 It's too bad I've not seen something similar on any of the Windows-based utilities to date.



 Undervolting CAN reduce your "maximum" hash rate if you take it far enough because you can't clock the card as high - but sometimes the gain in efficiency is worth it.
 MINOR undervolting well tend to allow you to maintain hashrate while using a little less power.

 ANY undervolting tends to reduce heat, which is a GOOD THING from a longevity viewpoint, as long as you don't go too far and completely brick the card.

[Amph]

Found something interesting in NVidia-smi last night - it shows the wattage (AND the TDP limit) as part of it's standard list (-l option) command.

 Dual GTX 950s in one box, the one that X is actually running on eating about 85 watts, the other one about 75, running about 10MH/s each with no undervolt and stock clocks (they DO seem to be autoboosting quite nicely, and I DID kick the fan settings up to something SANE).

 It's too bad I've not seen something similar on any of the Windows-based utilities to date.



 Undervolting CAN reduce your "maximum" hash rate if you take it far enough because you can't clock the card as high - but sometimes the gain in efficiency is worth it.
 MINOR undervolting well tend to allow you to maintain hashrate while using a little less power.

 ANY undervolting tends to reduce heat, which is a GOOD THING from a longevity viewpoint, as long as you don't go too far and completely brick the card.

interested about the wattage display, what is the command exactly?

never mind found it http://cryptomining-blog.com/tag/nvidia-smi/

very good wattmeter is useless now, it report 150w for 1 970 mining etheruem at 22MH, better than expected, i was thinking about 160w

also if we count that g1 gaming consume a bit more than reference and especially more than mini itx 970, because they add more component and 3 fan, it's even better

[coinyard]

but the question is, if i undervolt my 390s will that impact the hashrate?   Currently I should be able to get roughly 32 MH/s per 390.   If I undevolt , will it still hash at the same rate or will it be less?

Yes, hashrate will be the same. Only problem is if you go too low on the voltage, it will just keep crashing.

Nice.  Thanks.  Is there a detailed guide for undervolting an R9 390 somewhere?  Something that tells me what the best settings are?

You can use the MSI afterburner to undervolt 100mV for both the Core and memory controller.

[Koamder]

but the question is, if i undervolt my 390s will that impact the hashrate?   Currently I should be able to get roughly 32 MH/s per 390.   If I undevolt , will it still hash at the same rate or will it be less?

Yes, hashrate will be the same. Only problem is if you go too low on the voltage, it will just keep crashing.

Nice.  Thanks.  Is there a detailed guide for undervolting an R9 390 somewhere?  Something that tells me what the best settings are?

You can use the MSI afterburner to undervolt 100mV for both the Core and memory controller.

I use Sapphire Trixx to reduce the core voltage by 200 mV, that will save more energy. But the Core frequency is less than 978 MHz.

[virasog]

but the question is, if i undervolt my 390s will that impact the hashrate?   Currently I should be able to get roughly 32 MH/s per 390.   If I undevolt , will it still hash at the same rate or will it be less?

Yes, hashrate will be the same. Only problem is if you go too low on the voltage, it will just keep crashing.

Nice.  Thanks.  Is there a detailed guide for undervolting an R9 390 somewhere?  Something that tells me what the best settings are?

You can use the MSI afterburner to undervolt 100mV for both the Core and memory controller.

I use Sapphire Trixx to reduce the core voltage by 200 mV, that will save more energy. But the Core frequency is less than 978 MHz.

The problem with Sapphire Trixx is that it cannot reduce the VDDCI. So I use both afterburner and trixx.

[Tacalt]

I would prefer to use the voltage mod, to reduce the voltage a bit, then use the MSI Afterburner.

[QuintLeo]

The wattmeter isn't useless, as it shows the entire comsumption of the SYSTEM - which is a lot more applicable to figuring profitability than JUST the card (or cards) IN the system.
CPUs and motherboards and ram and drives etc eat power TOO, and if the system isn't being used for anything else that MATTERS.

[Amph]

yes but now i know exactly how much one card consume, the system apparently consume 70w when three card are mining

each card 147w mining at 22MH, same thing as 390, so those who were saying that amd was better, were wrong

possible lower with a reference 970 due to less components on board plus less fan, 140w estimate

[fracorcled]

yes but now i know exactly how much one card consume, the system apparently consume 70w when three card are mining

each card 147w mining at 22MH, same thing as 390, so those who were saying that amd was better, were wrong

possible lower with a reference 970 due to less components on board plus less fan, 140w estimate

I have 5x R9 390 XFX cards. 137 MHz with 870W from the wall, so that is 6.35J /MH, that is better than the 970.

[Amph]

yes but now i know exactly how much one card consume, the system apparently consume 70w when three card are mining

each card 147w mining at 22MH, same thing as 390, so those who were saying that amd was better, were wrong

possible lower with a reference 970 due to less components on board plus less fan, 140w estimate

I have 5x R9 390 XFX cards. 137 MHz with 870W from the wall, so that is 6.35J /MH, that is better than the 970.

not with reference card, it depend on the type of card, with a reference card that have 1 fan only and a smaller pcb you consume less

mine are g1 gaming you are running 390 that have probably two fan only and the pcb is smaller with less component, that's why you consume less

they are equal in the end, i can estimate a consumption of 140w with a reference 970 at 22MH so 5 x 140 +70w of the whole system(i have two fan added for cooling and my cpu is at 25% + 8giga ram)

so total is 700w, plus the 70w system, = 770w vs your 870w at 132MH vs 137MH, not better at all, only nano is better 970 and 390 are equal

[antantti]

It is a well known fact that smi tool shows way too low numbers.

[Amph]

It is a well known fact that smi tool shows way too low numbers.

actually not they are right i then measured with wattmeter, total for the system was 520w with cpu running 25%, 2 additional fan(120mm) on the motherboard, the motherboard itself, the psu+the ssd and the ram(2x4)

cpu alone is 15w at 25%-30% peak, ram are like 3w, the two fan are like other 2-3w, the ssd, is another 2-3w the psu is like 10w, and the motherboard is at least 30w probably more

this is a total of 70w, 520-70 = 450/3(i'm running 3 970) = 150w each, now from the web it seems that a motherboard can consume more than 30w in overloaded, plus add that each g1 gaming has 3 fan and not two

you need then to remove another 20w at least, so 140w each is the best number you can get

[antantti]

It is a well known fact that smi tool shows way too low numbers.

actually not they are right i then measured with wattmeter, total for the system was 520w with cpu running 25%, 2 additional fan(120mm) on the motherboard, the motherboard itself, the psu+the ssd and the ram(2x4)

cpu alone is 15w at 25%-30% peak, ram are like 3w, the two fan are like other 2-3w, the ssd, is another 2-3w the psu is like 10w, and the motherboard is at least 30w probably more

this is a total of 70w, 520-70 = 450/3(i'm running 3 970) = 150w each, now from the web it seems that a motherboard can consume more than 30w in overloaded, plus add that each g1 gaming has 3 fan and not two

you need then to remove another 20w at least, so 140w each is the best number you can get

Did a test run with latest 368.22 drivers (W7 x64) and I must say I am really surprised it actually works now, numbers are on par with my power meter.

I still need 175-195w to 22MH though, 140w can be done with 19-20MH. Tested on coinotron stratum, recheck value 4000.

[Amph]

It is a well known fact that smi tool shows way too low numbers.

actually not they are right i then measured with wattmeter, total for the system was 520w with cpu running 25%, 2 additional fan(120mm) on the motherboard, the motherboard itself, the psu+the ssd and the ram(2x4)

cpu alone is 15w at 25%-30% peak, ram are like 3w, the two fan are like other 2-3w, the ssd, is another 2-3w the psu is like 10w, and the motherboard is at least 30w probably more

this is a total of 70w, 520-70 = 450/3(i'm running 3 970) = 150w each, now from the web it seems that a motherboard can consume more than 30w in overloaded, plus add that each g1 gaming has 3 fan and not two

you need then to remove another 20w at least, so 140w each is the best number you can get

Did a test run with latest 368.22 drivers (W7 x64) and I must say I am really surprised it actually works now, numbers are on par with my power meter.

I still need 175-195w to 22MH though, 140w can be done with 19-20MH. Tested on coinotron stratum, recheck value 4000.

uh there are new drivers, i missed them

yes it work pretty well, i get this with 62% tdp