My first GPU miner got overclocked !

[zoufou]

Hey all,

I finally managed to overclock/undervolt my 6 GPUs, i'm getting a 170 MH/s @1000Watts with the following configs:

• 2x PowerColor RED DEVIL Radeon RX 570 4G: Mem clock @2000, Power maxed to 100Watts, the card delivers ~27Mh/s
• 1x XFX RS XXX Edition Radeon RX 570 4G: Mem clock @2000, Power maxed to 100Watts, the card delivers ~28Mh/s
• 1x Sapphire Radeon NITRO+ RX 580 4GB: Mem clock @2100, Power maxed to 100Watts, the card delivers ~29Mh/s
• 1x GIGABYTE AORUS Radeon RX 580 4G: Mem clock @2100, Power maxed to 100Watts, the card delivers ~29Mh/s
• 1x MSI Radeon RX 580 DirectX 12 RX 580 4G: Mem clock @2100, Power maxed to 100Watts, the card delivers ~30Mh/s

Do you think i can do better at overclocking these cards ? am not sure how i can bring down power usage lower than 1k Watts ...

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[Johny101010]

What straps are you using for the MSI card. Also what memory it's it?

[Coinebauer]

How can each card pull 100 watts ("maxed to 100 watts") and your system 1000? Do you have a 400 watt CPU?

[zoufou]

What straps are you using for the MSI card. Also what memory it's it?

I don't have the info right now, but it's not a samsung one.

Modded the bios with 2000, and set ethos "mem 2100"

[zoufou]

How can each card pull 100 watts ("maxed to 100 watts") and your system 1000? Do you have a 400 watt CPU?

Yes, seems weird, my meter reports 1000W when the rig is mining, and ~90W when GPUs are stopped.

And through ethos's /opt/ethos/sbin/ethos-readdata watts command:

104.19 96.25 97.17 94.12 95.24 101.16

That means my 6 GPUs eat ~600Watts ...

[Trade_BTC]

How can each card pull 100 watts ("maxed to 100 watts") and your system 1000? Do you have a 400 watt CPU?

Yes, seems weird, my meter reports 1000W when the rig is mining, and ~90W when GPUs are stopped.

And through ethos's /opt/ethos/sbin/ethos-readdata watts command:

104.19 96.25 97.17 94.12 95.24 101.16

That means my 6 GPUs eat ~600Watts ...

My 7 gpu saphire Rx 580 draws 780 watts at the wall (entire rig) so even tho the red devil's demand more power I think you could bring that rig down by alot. Also they hash 29.5 m/h each on ethash so to give you a basis to go by. All bios modded just with straps and using claymore for overclock/undervolt.

[zoufou]

How can each card pull 100 watts ("maxed to 100 watts") and your system 1000? Do you have a 400 watt CPU?

Yes, seems weird, my meter reports 1000W when the rig is mining, and ~90W when GPUs are stopped.

And through ethos's /opt/ethos/sbin/ethos-readdata watts command:

104.19 96.25 97.17 94.12 95.24 101.16

That means my 6 GPUs eat ~600Watts ...

My 7 gpu saphire Rx 580 draws 780 watts at the wall (entire rig) so even tho the red devil's demand more power I think you could bring that rig down by alot. Also they hash 29.5 m/h each on ethash so to give you a basis to go by. All bios modded just with straps and using claymore for overclock/undervolt.

Can you please share your undervolt parameters ?

[Coinebauer]

How can each card pull 100 watts ("maxed to 100 watts") and your system 1000? Do you have a 400 watt CPU?

Yes, seems weird, my meter reports 1000W when the rig is mining, and ~90W when GPUs are stopped.

And through ethos's /opt/ethos/sbin/ethos-readdata watts command:

104.19 96.25 97.17 94.12 95.24 101.16

That means my 6 GPUs eat ~600Watts ...

I see. Maybe that is comparable to the windows world's "GPU-only power draw", where all the memory consumption, board and VRM losses are to be added on top. That would make sense, since it's a good 40-50 watts per card on top.