Which PSU for 6x R9 390? - page 2. | Bitcointalksearch.org

antantti

legendary

Activity: 1176

Merit: 1015

Quote from: bathrobehero on March 14, 2016, 06:08:49 PM

Quote from: mistanama on March 14, 2016, 05:07:50 PM

Quote from: Eliovp on March 14, 2016, 01:13:04 PM

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking. Wink

It is not possible for 22MH @65W. The maximum down voltage is -100 mV with MSI afterburner as far as I know.

It's about Power Target or TDP Limit or however you want to call it and not voltage.

I have a feeling eliovp uses custom bios too...

bathrobehero

legendary

Activity: 2002

Merit: 1051

ICO? Not even once.

Quote from: mistanama on March 14, 2016, 05:07:50 PM

Quote from: Eliovp on March 14, 2016, 01:13:04 PM

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking. Wink

It is not possible for 22MH @65W. The maximum down voltage is -100 mV with MSI afterburner as far as I know.

It's about Power Target or TDP Limit or however you want to call it and not voltage.

EastBirth

member

Activity: 75

Merit: 10

the R9 390 uses about 250W each when -100mV 1100/1500MHz. So You need at least 1600W for 6x390.

Eliovp

legendary

Activity: 1050

Merit: 1293

Huh?

Quote from: mistanama on March 14, 2016, 05:07:50 PM

Quote from: Eliovp on March 14, 2016, 01:13:04 PM

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking. Wink

It is not possible for 22MH @65W. The maximum down voltage is -100 mV with MSI afterburner as far as I know.

Ok, if you say so

mistanama

sr. member

Activity: 327

Merit: 250

Quote from: Eliovp on March 14, 2016, 01:13:04 PM

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking. Wink

It is not possible for 22MH @65W. The maximum down voltage is -100 mV with MSI afterburner as far as I know.

Eliovp

legendary

Activity: 1050

Merit: 1293

Huh?

Quote from: bathrobehero on March 14, 2016, 04:11:27 PM

Quote from: Eliovp on March 14, 2016, 03:08:40 PM

Quote from: bathrobehero on March 14, 2016, 02:20:42 PM

Quote from: Eliovp on March 14, 2016, 01:13:04 PM

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking. Wink

I'm having a hard time believing that.

Atm 95 Nano's running all @ 22Mh per card. (Basically more because i'm doing more than 2.1Ghz)

Complete farm is at exactly 7.6 KW

7.6 KW / 95 = 80Watt (not including mobo's / processors / memory)

Here's a picture of my meter (fusebox only for the farm) at this moment.

https://drive.google.com/file/d/0B_cBBoZ_PTwOVGdod0k2c1dLU3M3NkdFZ3JUY2kxamhxME1Z

A bit unclear because it's dark in here.

Greetings.

Damn, that's pretty crazy. Without the other components those cards indeed pull 65 watts each.

But, my 970's do 20.5 Mh/s at around 150 watts but they are much cheaper. In fact - at least with the prices available to me - a 970 is paying for itself in 72 days while a Nano will only hit ROI in exactly a 100 days.
That is with $0.15 per kWh. But I'm already at the limit of how much electricity I can pull so I can see why those Nanos are appealing. And if Eth gets out of the picture efficiency once again will be key.

Bought them all in bulk at a very nice price, so your calculation is a bit off in my case

Quote from: Deki1904 on March 14, 2016, 03:54:50 PM

Can you tell me which components you are using for you gpu rigs?
5 GPU per rig?
and which brand you use for the gpus?
is it possible to put 6 Nanos?

Thanks

6Nano's per rig.

Vaccomondus

full member

Activity: 224

Merit: 100

probably not, there are ethereu clone waiting for a pump and decred, other coin are trash

bathrobehero

legendary

Activity: 2002

Merit: 1051

ICO? Not even once.

Quote from: Eliovp on March 14, 2016, 03:08:40 PM

Quote from: bathrobehero on March 14, 2016, 02:20:42 PM

Quote from: Eliovp on March 14, 2016, 01:13:04 PM

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking. Wink

I'm having a hard time believing that.

Atm 95 Nano's running all @ 22Mh per card. (Basically more because i'm doing more than 2.1Ghz)

Complete farm is at exactly 7.6 KW

7.6 KW / 95 = 80Watt (not including mobo's / processors / memory)

Here's a picture of my meter (fusebox only for the farm) at this moment.

https://drive.google.com/file/d/0B_cBBoZ_PTwOVGdod0k2c1dLU3M3NkdFZ3JUY2kxamhxME1Z

A bit unclear because it's dark in here.

Greetings.

Damn, that's pretty crazy. Without the other components those cards indeed pull 65 watts each.

But, my 970's do 20.5 Mh/s at around 150 watts but they are much cheaper. In fact - at least with the prices available to me - a 970 is paying for itself in 72 days while a Nano will only hit ROI in exactly a 100 days.
That is with $0.15 per kWh. But I'm already at the limit of how much electricity I can pull so I can see why those Nanos are appealing. And if Eth gets out of the picture efficiency once again will be key.

Deki1904

sr. member

Activity: 490

Merit: 250

Can you tell me which components you are using for you gpu rigs?
5 GPU per rig?
and which brand you use for the gpus?
is it possible to put 6 Nanos?

Thanks

Eliovp

legendary

Activity: 1050

Merit: 1293

Huh?

Quote from: bathrobehero on March 14, 2016, 02:20:42 PM

Quote from: Eliovp on March 14, 2016, 01:13:04 PM

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking. Wink

I'm having a hard time believing that.

Atm 95 Nano's running all @ 22Mh per card. (Basically more because i'm doing more than 2.1Ghz)

Complete farm is at exactly 7.6 KW

7.6 KW / 95 = 80Watt (not including mobo's / processors / memory)

Here's a picture of my meter (fusebox only for the farm) at this moment.

https://drive.google.com/file/d/0B_cBBoZ_PTwOVGdod0k2c1dLU3M3NkdFZ3JUY2kxamhxME1Z

A bit unclear because it's dark in here.

Greetings.

Deki1904

sr. member

Activity: 490

Merit: 250

and where i can get them in bulk in eu'?

Vaccomondus

full member

Activity: 224

Merit: 100

if you don't buy nano in bulk, they are too expensive

bathrobehero

legendary

Activity: 2002

Merit: 1051

ICO? Not even once.

Quote from: Eliovp on March 14, 2016, 01:13:04 PM

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking.

I'm having a hard time believing that.

Deki1904

sr. member

Activity: 490

Merit: 250

Different person

Which language is this?

I'm so confused right now which gpu or psu..

R9 nano
Or 380-390
Or used 280x....

Eliovp

legendary

Activity: 1050

Merit: 1293

Huh?

Quote from: Deki1904 on March 14, 2016, 01:26:53 PM

Wow 65W?

okay i saw 200W 30mhs
and about 100 W 24-25MH

Maybe the Nano is my solution, but i could not finde someone who put 6 of them in a Rig...

You're talking to him...

Haven't we spoke on IRC?

Toevallig uit Gent?

Or are you a different person?

Deki1904

sr. member

Activity: 490

Merit: 250

Wow 65W?

okay i saw 200W 30mhs
and about 100 W 24-25MH

Maybe the Nano is my solution, but i could not finde someone who put 6 of them in a Rig...

Eliovp

legendary

Activity: 1050

Merit: 1293

Huh?

Quote from: Deki1904 on March 14, 2016, 12:03:03 PM

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

That test was a few months ago. Hashrate has dropped a little due to the bigger DAG file.

It's more like 26Mh @ 150W.

But more interesting = 22Mh @ 65W with some down clocking. Wink

Deki1904

sr. member

Activity: 490

Merit: 250

Thank you all.

Im just thinking about the Nano, it use only 150W at 28Mhs i saw.

antantti

legendary

Activity: 1176

Merit: 1015

I have two of them, power consumption really depends a lot of clocks and volts, 100-330W per card. I am running mine overclocked and undervolted 30MH/ 225W each which I think is a sweet spot for them.

If you go 2 PSU way choose at least gold rated ones with 6 x PCIE power connectors so that you don't have to play with splitters and molex adapters.

Playing with volts and clocks is much easier in windows than in linux.

bathrobehero

legendary

Activity: 2002

Merit: 1051

ICO? Not even once.

This is a great site for getting a general idea how each card performs:

http://62.212.74.86/~mining/list/

And then here's a list of maximum power consumption figures:

http://media.bestofmicro.com/A/7/525247/original/06-Overwiew-Torture-All-Cards.png

Of course I'd recommend doing more research than that.

Quote from: Vaccomondus on March 14, 2016, 11:21:30 AM

they consume 280w when mining, so you need to lower the tdp to like 70, but then it will be just running 5 390, but in this way you can buy 1 500-1600

Yes, Eth is not terribly power hungry but other coins are (eg, Decred) so unless you're only interested in mining Eth, or having a gimped hashrate because of 70% power limit in those more power hungry algos, I'd go for higher capacity PSUs just to be sure. And of course most algos benefit a lot from overclocking as well which again, requires more power.

Topic: Which PSU for 6x R9 390? - page 2. (Read 3862 times)