Ethereum mining still profitable? - page 31.

Zeelotin

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Quote from: socks435 on May 20, 2016, 01:45:29 PM

Quote from: coinyard on May 20, 2016, 01:41:10 PM

So the big mining farms are very confident that they will make money even after the Etheruem becomes PoS.

I think ethereum dont like to be a pos because if they convert it into pos the price of ethereum will be down..
And according to miners outside in this forum i heard that minig ethereum still profitable than s9 miner..

GPU mining is more profitable than the bitcoin mining for home miners. The bitcoin mining below to farms.

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Quote from: coinyard on May 20, 2016, 01:41:10 PM

So the big mining farms are very confident that they will make money even after the Etheruem becomes PoS.

I think ethereum dont like to be a pos because if they convert it into pos the price of ethereum will be down..
And according to miners outside in this forum i heard that minig ethereum still profitable than s9 miner..

coinyard

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So the big mining farms are very confident that they will make money even after the Etheruem becomes PoS.

Next BillG

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Quote from: Tmdz on May 20, 2016, 01:23:57 AM

Back on topic.

Nice price increase, almost a 50% gain or more depending how you look at it. But the farms have continued to increase capacity ( or a new one going online), saw hash jump up 200 gh above normal levels tonight. That would be the equivalent of 7'400 R9 390's going online or the total hash rate increasing 6.6%, pretty crazy when you think of it like that. We will easily be looking at a 500 gh increase this month, probably more. It seems 200 gh farms are becoming more common, being that I am beginning to notice spikes in that range when it does spike.

That is very concerning for us home miners. If the price goes back to 0.02 and the difficulty double, it is not profitable.

QuintLeo

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Quote from: MinerDudeRigs on May 18, 2016, 07:45:42 PM

Very profitable to mine. Going 240 for power where available really drops electric cost as well.

240 vs 120 on most gold power supplies is only a 1-2% gain in efficiency. Not exactly a big drop in electric cost, though every bit can help sometimes.

$1200 with good part selection would probably get you a rig doing 80-90 MH easily, with VERY carefull part selection on parts on sale might get you to 120 - assuming new parts and from-scratch build.
Better to upgrade existing machines on a hahs/$ basis as much as possible.

I expect GTX970 prices to collapse over the next month, as the GTX 1070 is due out June 10 and blows away the 970 hands-down for most usage - most of the benchmarks I've seen put the 1070 in Titan performance territory or a little higher.

Now, if someone could get an ETH miner optimised to work WELL on the 1070.......

Dropping the voltage by 10%, assuming no change in resistance, actually drops the power draw to 81% - but pretty close to that 20% quoted.

Tmdz

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Back on topic.

Nice price increase, almost a 50% gain or more depending how you look at it. But the farms have continued to increase capacity ( or a new one going online), saw hash jump up 200 gh above normal levels tonight. That would be the equivalent of 7'400 R9 390's going online or the total hash rate increasing 6.6%, pretty crazy when you think of it like that. We will easily be looking at a 500 gh increase this month, probably more. It seems 200 gh farms are becoming more common, being that I am beginning to notice spikes in that range when it does spike.

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Quote from: Haidong Liang on May 19, 2016, 02:03:02 PM

Quote from: antantti on May 19, 2016, 12:27:59 PM

Some quick tests with 390´s -100mV.

20MH 125w from the wall (gold rated PSU 90-92%)
25MH 150w
27MH 185w
30MH 215w

-200mV and 20&25MH wattage would be even lower.

Can you try to lower the voltage to -200 mV with Trixx and the frequency to 960 MHz? It could be much lower.

My test rig with W7 and really outdated hardware has some issues with Trixx so I can't test it.

BTW, for 20MH you only need 700-750 for core so you need to underclock it like 30-35% to get down to 970 performance levels.

Haidong Liang

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Quote from: antantti on May 19, 2016, 12:27:59 PM

Some quick tests with 390´s -100mV.

20MH 125w from the wall (gold rated PSU 90-92%)
25MH 150w
27MH 185w
30MH 215w

-200mV and 20&25MH wattage would be even lower.

Can you try to lower the voltage to -200 mV with Trixx and the frequency to 960 MHz? It could be much lower.

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Quote from: Ayers on May 19, 2016, 01:46:35 AM

why? i also have the 970 and i think it's a great card for etheruem it match any amd card out there, and now you can find it for $230 on the web, very cheap

Where are you finding 970's for $230 ?

antantti

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Some quick tests with 390´s -100mV.

20MH 125w from the wall (gold rated PSU 90-92%)
25MH 150w
27MH 185w
30MH 215w

-200mV and 20&25MH wattage would be even lower.

RoseMann

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The power consumption is linearly proportional to the frequency, so if the voltage reduce by 20%, frequency reduce by 10%, the power consumption reduce by 50%, but the hash rate reduce by 10%.

Variantand

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Quote from: Amph on May 19, 2016, 06:59:15 AM

Quote from: antantti on May 19, 2016, 06:34:37 AM

Quote from: Amph on May 19, 2016, 03:49:43 AM

i don't believe that a 390 can mine at that rate, i need to see this with my eye, i doubt a 280w card can be downvolted to consume only 167w while maintaining its full hashrate basically

i smell bullshit, at 27 it would be still at 220w, so no it's not better than a 970

It can. All it takes is to install AB, drag volt slider all the way to the left to -100mV. Overclock core to 1100+ and you have 30-31MH with 220-230w, if you want to save more power just underclock it to desired level.

280w can be done with 30MH eth + 0.8GH dcr.

if 30MH at 220 is true, then at 27MH should be 200w not 167w and around 25MH at 180w and 23MH at 162w etc..., the ratio does not change, unless we are talking about heavy bios mod or soemthing like for the nano

because of this i'm not believing it until someone take a screen for the hash and the wattage together

It is not linearly proportional. P = V*V/R. If you reduce the voltage by 10%, the power consumption reduce by 20%.

sanadas

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Quote from: Amph on May 19, 2016, 06:59:15 AM

Quote from: antantti on May 19, 2016, 06:34:37 AM

Quote from: Amph on May 19, 2016, 03:49:43 AM

i don't believe that a 390 can mine at that rate, i need to see this with my eye, i doubt a 280w card can be downvolted to consume only 167w while maintaining its full hashrate basically

i smell bullshit, at 27 it would be still at 220w, so no it's not better than a 970

It can. All it takes is to install AB, drag volt slider all the way to the left to -100mV. Overclock core to 1100+ and you have 30-31MH with 220-230w, if you want to save more power just underclock it to desired level.

280w can be done with 30MH eth + 0.8GH dcr.

if 30MH at 220 is true, then at 27MH should be 200w not 167w and around 25MH at 180w and 23MH at 162w etc..., the ratio does not change, unless we are talking about heavy bios mod or soemthing like for the nano

because of this i'm not believing it until someone take a screen for the hash and the wattage together

If you reduce the voltage of the Core further with the Trixx (up to -200 mV), you can reduce the power consumption by 20% more from the voltage reduction. But at that voltage, you have to reduce the frequency as well.

Amph

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Quote from: antantti on May 19, 2016, 06:34:37 AM

Quote from: Amph on May 19, 2016, 03:49:43 AM

i don't believe that a 390 can mine at that rate, i need to see this with my eye, i doubt a 280w card can be downvolted to consume only 167w while maintaining its full hashrate basically

i smell bullshit, at 27 it would be still at 220w, so no it's not better than a 970

It can. All it takes is to install AB, drag volt slider all the way to the left to -100mV. Overclock core to 1100+ and you have 30-31MH with 220-230w, if you want to save more power just underclock it to desired level.

280w can be done with 30MH eth + 0.8GH dcr.

if 30MH at 220 is true, then at 27MH should be 200w not 167w and around 25MH at 180w and 23MH at 162w etc..., the ratio does not change, unless we are talking about heavy bios mod or soemthing like for the nano

because of this i'm not believing it until someone take a screen for the hash and the wattage together

antantti

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Quote from: Amph on May 19, 2016, 03:49:43 AM

i don't believe that a 390 can mine at that rate, i need to see this with my eye, i doubt a 280w card can be downvolted to consume only 167w while maintaining its full hashrate basically

i smell bullshit, at 27 it would be still at 220w, so no it's not better than a 970

It can. All it takes is to install AB, drag volt slider all the way to the left to -100mV. Overclock core to 1100+ and you have 30-31MH with 220-230w, if you want to save more power just underclock it to desired level.

280w can be done with 30MH eth + 0.8GH dcr.

QuintLeo

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I personally would want the 970 instead if it's close on MH/watt 'cause it's more capable overall - but at this point I don't want either card at current new pricing.

I find my $80 HD7870 is a lot more likely to pay itself off before Ethereum becomes unprofitable (yeah, it is used but that's not an uncommon price to find those cards at).

I expect the 1070 at close to recent 970 pricing will have a lot better pefromance on things I want to do AFTER Ethereum becomes unprofitable (though if 970 price starts diving enough I might not wait for the 1070).

Amph

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i don't believe that a 390 can mine at that rate, i need to see this with my eye, i doubt a 280w card can be downvolted to consume only 167w while maintaining its full hashrate basically

i smell bullshit, at 27 it would be still at 220w, so no it's not better than a 970

Tmdz

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Quote from: Ayers on May 19, 2016, 01:46:35 AM

Quote from: antantti on May 18, 2016, 08:17:53 PM

Quote from: Amph on May 18, 2016, 05:39:24 AM

Quote from: Mulzatas on May 18, 2016, 02:55:05 AM

Quote from: Ayers on May 18, 2016, 02:51:15 AM

you can use the nano mod of that guy in this forum, he mine with 75watt and 22 mega i remember, pretty good, i still need to see that super efficiency of other amd, it's strange that they cna match nvidia, like the 390 for example

If you under volt the R9 390 to less than 1000 mV, you can get around 6 J/MH, that is better than 970.

proof of that, my 970 do 22 mega for 160w, i doubt a 390 can beat this

I have both 970 and 390, for ethereum mining I would choose 390 over 970.

why? i also have the 970 and i think it's a great card for etheruem it match any amd card out there, and now you can find it for $230 on the web, very cheap

Because a under volted 390 consumes 167 watts and hashes at 27 mh and you can buy it new instead of second hand giving you a warranty. Why would you want a 970 instead?

Next BillG

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Quote from: Ayers on May 19, 2016, 01:46:35 AM

Quote from: antantti on May 18, 2016, 08:17:53 PM

Quote from: Amph on May 18, 2016, 05:39:24 AM

Quote from: Mulzatas on May 18, 2016, 02:55:05 AM

Quote from: Ayers on May 18, 2016, 02:51:15 AM

you can use the nano mod of that guy in this forum, he mine with 75watt and 22 mega i remember, pretty good, i still need to see that super efficiency of other amd, it's strange that they cna match nvidia, like the 390 for example

If you under volt the R9 390 to less than 1000 mV, you can get around 6 J/MH, that is better than 970.

proof of that, my 970 do 22 mega for 160w, i doubt a 390 can beat this

I have both 970 and 390, for ethereum mining I would choose 390 over 970.

why? i also have the 970 and i think it's a great card for etheruem it match any amd card out there, and now you can find it for $230 on the web, very cheap

$230 on the web? That is cheaper than 390 in my country. Is that also cheaper than 390 in your place?

Ayers

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Quote from: antantti on May 18, 2016, 08:17:53 PM

Quote from: Amph on May 18, 2016, 05:39:24 AM

Quote from: Mulzatas on May 18, 2016, 02:55:05 AM

Quote from: Ayers on May 18, 2016, 02:51:15 AM

you can use the nano mod of that guy in this forum, he mine with 75watt and 22 mega i remember, pretty good, i still need to see that super efficiency of other amd, it's strange that they cna match nvidia, like the 390 for example

If you under volt the R9 390 to less than 1000 mV, you can get around 6 J/MH, that is better than 970.

proof of that, my 970 do 22 mega for 160w, i doubt a 390 can beat this

I have both 970 and 390, for ethereum mining I would choose 390 over 970.

why? i also have the 970 and i think it's a great card for etheruem it match any amd card out there, and now you can find it for $230 on the web, very cheap

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