Which PSU for 6x R9 390?

[Eliovp]

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. 

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 

[EastBirth]

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

[bathrobehero]

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. 

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.

[antantti]

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. 

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...

[Pamadar]

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. 

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.

In AMD cards, you can only change the voltage to affect the power consumption. For R9 390 it is -100 mV for Afterburner.

[Eliovp]

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.  

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...

 

You can pull the bios from the card, mod it manually and rewrite it.

Not that difficult. However, when you do it wrong, you could break it and bye bye to your warranty..

Use to do that a lot when running only on linux.

Thx to Wolf though :-)

[bathrobehero]

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.  

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.

In AMD cards, you can only change the voltage to affect the power consumption. For R9 390 it is -100 mV for Afterburner.

Nonsense. Not 100% sure that you can reduce it below 100% but I know there's an option to change it.

[Deki1904]

I made a desicion to use R9 380

Any one expirence in Undervolting them and settings?

[Basteamore]

I made a desicion to use R9 380

Any one expirence in Undervolting them and settings?

You need to use the 4GB version.

[Deki1904]

http://www.amazon.de/registry/wishlist/1MRLE4E80HZZ2


my rigs. did i forgot something?

[Ayers]

http://www.amazon.de/registry/wishlist/1MRLE4E80HZZ2


my rigs. did i forgot something?

i think you're ordering too much stuff that do not contibute to the profit, leave those alone and buy only what is needed, and 1500+1000w seems overkill, are you sure you need that amount?

[Deki1904]

the 1500w psu is for the 3x r9 390

the 1000w psu are for 6x r7 390

[Deki1904]

I have one problem, how i connect 6x USB 3.0 Riser to a MOBO?

As i see the H81 got only usb2.0

[Deki1904]

oh i see..
http://www.ebay.de/itm/PCI-Express-PCI-E-1x-16x-Extender-Riser-Card-mit-USB3-0-SATA-15P-Kabel-Adapter-/361440109402

there is a adapter for the pcie slot?

[Eliovp]

I have one problem, how i connect 6x USB 3.0 Riser to a MOBO?

As i see the H81 got only usb2.0

You don't need 6x usb..you need 6x pci 1x or 16x.

The usb is the connection from the risercard to the pci connection :-)

[Deki1904]

Thank you i saw it to late.

[Deki1904]

Corsair CP-9020057-EU AX Serie AX1500i ATX/EPS 80 PLUS Titanium 1500Watt, Digital, Netzteil, EU
this one or the Lepa 1600w?
for 4x R9 390?

[Eliovp]

I own the lepa g1600 and i'm very happy with it.

Up to you..

[fricircled]

Corsair CP-9020057-EU AX Serie AX1500i ATX/EPS 80 PLUS Titanium 1500Watt, Digital, Netzteil, EU
this one or the Lepa 1600w?
for 4x R9 390?

For 4x390, 1500W is enough.

[mistanama]

Corsair CP-9020057-EU AX Serie AX1500i ATX/EPS 80 PLUS Titanium 1500Watt, Digital, Netzteil, EU
this one or the Lepa 1600w?
for 4x R9 390?

For 4x390, 1500W is enough.

1500W is even enough for 6x390 if you use the -100mV undervoltage. That will consumes about 220W each.