Most Power Efficient GPU for ETH or XMR?

ORiN

sr. member

Activity: 532

Merit: 250

Quote from: xxcsu on September 24, 2016, 04:40:19 AM

Quote from: ORiN on September 24, 2016, 02:04:52 AM

I am looking to set up a dedicated rig to mine ETH or XMR. I only has a HD7950 from my scrypt mining days. Which GPU has the best power efficiency at the moment? This is my main consideration since electricity is not that cheap in my city (about $0.15/kWh).

Would go for the RX 480 cards , with some simple bios mods , or wattman tweaks you can get the power usage down , hash rate up .

My bios modded rx 480 8GB cards are hashing in the 30MH/s range (ETH mining) GPUZ reported wattage between 65-85 watts , real wattage at the wall is around 115-125 watts /cards .

You can get RX 480 250$ - 300$ , nvida 1070 from 400$ and up .

My 6 cards setups is pulling around 880 watts at the wall with modded bios with a total hashing power 178-182.5MH/s , the same setup with factory bios , way under clocked pulling around 725 watts with a total hashing power 148MH/s . Without any modification , tweaks ,with stock bios , the same setup is using 1100watts at the wall with 148MH/s hashing power .

Modded BIOS only available on Linux? What about Windows?

ORiN

sr. member

Activity: 532

Merit: 250

Quote from: rednoW on September 24, 2016, 03:32:32 AM

Quote from: ORiN on September 24, 2016, 02:04:52 AM

I am looking to set up a dedicated rig to mine ETH or XMR. I only has a HD7950 from my scrypt mining days. Which GPU has the best power efficiency at the moment? This is my main consideration since electricity is not that cheap in my city (about $0.15/kWh).

for eth the best in term of efficiency is gtx1070 with samsung memory.
32.6mhs at 95 watt.
rx480 with bios mod and 8gb samsung can also do good - 29-30mhs at 120 watt.

for xmr amd rx480 is slightly better in speed then gtx1070 now due to very bad xmr cuda miner available.

This is based on running Linux? The power efficiency seems to be very good compared to the previous generations.

rednoW

legendary

Activity: 1510

Merit: 1003

Quote from: xxcsu on September 24, 2016, 04:04:39 AM

Quote from: rednoW on September 24, 2016, 03:32:32 AM

Quote from: ORiN on September 24, 2016, 02:04:52 AM

I am looking to set up a dedicated rig to mine ETH or XMR. I only has a HD7950 from my scrypt mining days. Which GPU has the best power efficiency at the moment? This is my main consideration since electricity is not that cheap in my city (about $0.15/kWh).

for eth the best in term of efficiency is gtx1070 with samsung memory.
32.6mhs at 95 watt.
rx480 with bios mod and 8gb samsung can also do good - 29-30mhs at 120 watt.

for xmr amd rx480 is slightly better in speed then gtx1070 now due to very bad xmr cuda miner available.

Those numbers is At the wall or from gpuZ reading ?

from the wall. gpu-z cannot read gtx1070 power consumption.
32.6mhs can be done with tdp set to 55%, memclock 2400, core clock +100

xxcsu

hero member

Activity: 1498

Merit: 597

Quote from: ORiN on September 24, 2016, 02:04:52 AM

I am looking to set up a dedicated rig to mine ETH or XMR. I only has a HD7950 from my scrypt mining days. Which GPU has the best power efficiency at the moment? This is my main consideration since electricity is not that cheap in my city (about $0.15/kWh).

Would go for the RX 480 cards , with some simple bios mods , or wattman tweaks you can get the power usage down , hash rate up .

My bios modded rx 480 8GB cards are hashing in the 30MH/s range (ETH mining) GPUZ reported wattage between 65-85 watts , real wattage at the wall is around 115-125 watts /cards .

You can get RX 480 250$ - 300$ , nvida 1070 from 400$ and up .

My 6 cards setups is pulling around 880 watts at the wall with modded bios with a total hashing power 178-182.5MH/s , the same setup with factory bios , way under clocked pulling around 725 watts with a total hashing power 148MH/s . Without any modification , tweaks ,with stock bios , the same setup is using 1100watts at the wall with 148MH/s hashing power .

xxcsu

hero member

Activity: 1498

Merit: 597

Quote from: rednoW on September 24, 2016, 03:32:32 AM

Quote from: ORiN on September 24, 2016, 02:04:52 AM

I am looking to set up a dedicated rig to mine ETH or XMR. I only has a HD7950 from my scrypt mining days. Which GPU has the best power efficiency at the moment? This is my main consideration since electricity is not that cheap in my city (about $0.15/kWh).

for eth the best in term of efficiency is gtx1070 with samsung memory.
32.6mhs at 95 watt.
rx480 with bios mod and 8gb samsung can also do good - 29-30mhs at 120 watt.

for xmr amd rx480 is slightly better in speed then gtx1070 now due to very bad xmr cuda miner available.

Those numbers is At the wall or from gpuZ reading ?

rednoW

legendary

Activity: 1510

Merit: 1003

Quote from: ORiN on September 24, 2016, 02:04:52 AM

I am looking to set up a dedicated rig to mine ETH or XMR. I only has a HD7950 from my scrypt mining days. Which GPU has the best power efficiency at the moment? This is my main consideration since electricity is not that cheap in my city (about $0.15/kWh).

for eth the best in term of efficiency is gtx1070 with samsung memory.
32.6mhs at 95 watt.
rx480 with bios mod and 8gb samsung can also do good - 29-30mhs at 120 watt.

for xmr amd rx480 is slightly better in speed then gtx1070 now due to very bad xmr cuda miner available.

ORiN

sr. member

Activity: 532

Merit: 250

I am looking to set up a dedicated rig to mine ETH or XMR. I only has a HD7950 from my scrypt mining days. Which GPU has the best power efficiency at the moment? This is my main consideration since electricity is not that cheap in my city (about $0.15/kWh).

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