Topic: Ethereum mining still profitable? - page 30. (Read 131303 times)

Quote from: Amph on May 19, 2016, 05:59:15 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: antantti on May 19, 2016, 05:34:37 AM

Quote from: antantti on May 19, 2016, 05:34:37 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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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: Ayers on May 19, 2016, 12:46:35 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: antantti on May 18, 2016, 07:17:53 PM

Quote from: Ayers on May 19, 2016, 12:46:35 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: antantti on May 18, 2016, 07:17:53 PM

Quote from: antantti on May 18, 2016, 07:17:53 PM

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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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

antantti

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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.

MinerDudeRigs

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

FriendlyBit

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Im mining noob so i would like to know is 1200$ enough for (profitable) rig ?

fricircled

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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

In that thread, the OP can do 6J/MH with his AMD XFX R9 390.
https://bitcointalksearch.org/topic/one-way-to-undervolt-r9-300-series-cards-by-bios-mod-1465128

Amph

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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

Mulzatas

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