Topic: Ethereum mining still profitable? - page 53. (Read 131243 times)
I think I would recommend Etherium mining profitable time to invest now
What was the aux voltage before the cleaning? Do you believe it is due to the memory frequency going down from 1500 to 1200? Did you see the difference in power in/out?
aux -100mV adds another 15W of powersaving, from 540 to 525W. Memory downclock savings are minimal, hard to see at the wall.
No difference in power in/out. 1125/1200 is the ratio where memory controller load is 96-97%.
I thought the IC power consumption is linearly proportional to the circuit frequency. Why the drop from 1500 to 1200 MHz has not effect?
I thought so too but it looks like we were wrong. It does have an effect as long as core can utilize memory controller 100%. Lower mem - lower hash and power consumption, higher mem - nothing happens, mc just sits and waits for work.
I went so far that I tested 720/750, again same ratio, mc load close to 100%.
I didn't have time to verify this but it looks like 390 could be the first no Nano 20MH/100W card. 310W from the wall and ethminer hashrate somewhere at 40MH area.
What was the aux voltage before the cleaning? Do you believe it is due to the memory frequency going down from 1500 to 1200? Did you see the difference in power in/out?
aux -100mV adds another 15W of powersaving, from 540 to 525W. Memory downclock savings are minimal, hard to see at the wall.
No difference in power in/out. 1125/1200 is the ratio where memory controller load is 96-97%.
I thought the IC power consumption is linearly proportional to the circuit frequency. Why the drop from 1500 to 1200 MHz has not effect?
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.The Power in is 136W, 2x = 272W, 580-272 = 310W, the idle = 100w, so there is 210W difference. Are they from the fans or you have a very inefficient power supply?
I don't trust software when calculating power consumption, they always show too low numbers, both nvidia&amd. Took another card out and power consumption went down 280W.
At those loads cx750m efficiency is ~86%.
-edit- Did some cleaning. Idle 90W, mining 1125/1200, core & aux -100mV, 525W from the wall.
What was the aux voltage before the cleaning? Do you believe it is due to the memory frequency going down from 1500 to 1200? Did you see the difference in power in/out?
aux -100mV adds another 15W of powersaving, from 540 to 525W. Memory downclock savings are minimal, hard to see at the wall.
No difference in power in/out. 1125/1200 is the ratio where memory controller load is 96-97%.
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.The Power in is 136W, 2x = 272W, 580-272 = 310W, the idle = 100w, so there is 210W difference. Are they from the fans or you have a very inefficient power supply?
I don't trust software when calculating power consumption, they always show too low numbers, both nvidia&amd. Took another card out and power consumption went down 280W.
At those loads cx750m efficiency is ~86%.
-edit- Did some cleaning. Idle 90W, mining 1125/1200, core & aux -100mV, 525W from the wall.
What was the aux voltage before the cleaning? Do you believe it is due to the memory frequency going down from 1500 to 1200? Did you see the difference in power in/out?
Just hours away from Homestead now 
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.The Power in is 136W, 2x = 272W, 580-272 = 310W, the idle = 100w, so there is 210W difference. Are they from the fans or you have a very inefficient power supply?
I don't trust software when calculating power consumption, they always show too low numbers, both nvidia&amd. Took another card out and power consumption went down 280W.
At those loads cx750m efficiency is ~86%.
-edit- Did some cleaning. Idle 90W, mining 1125/1200, core & aux -100mV, 525W from the wall.
You said the limiting factor is the Core frequency. Does it mean if we use the 390x, we can achieve better hash with the same or lower core frequency?
Higher core means more hash. You can underclock mem to some point without loosing performance, 390x might be different but I don't have one to test.
Did you see the effect of Aux voltage on the power consumption? What is your Aux voltage? Did you change it to -50mV?
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.What is the temperature? When you use -100mV, does it work at 1125 MHz? Do you notice the change if you change the memory frequency from 1500 to 1250 or 1000MHz?
Temperatures 65 and 63C, they are mining -100mV/1125 as we speak. Lowering mem speed rises memory controller load, at 1200MHz load is 100%. Lower more and hash starts declining. Overclocking mem to 1600MHz does nothing but drops MCL closer to 70%.
Hashrate has stabilized to 61MH.
When you lower the memory speed from 1500 to 1200MHz, does it affect the power consumption?
Where do you see the memory controller load?
No it doesn't, well maybe 0-5W.
GPUZ shows it on sensors but only with 390. On 7970 or 290 it isn't listed.
Did you see no power consumption change with a power meter from the wall or just the power in in the GPUZ?
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.What is the temperature? When you use -100mV, does it work at 1125 MHz? Do you notice the change if you change the memory frequency from 1500 to 1250 or 1000MHz?
Temperatures 65 and 63C, they are mining -100mV/1125 as we speak. Lowering mem speed rises memory controller load, at 1200MHz load is 100%. Lower more and hash starts declining. Overclocking mem to 1600MHz does nothing but drops MCL closer to 70%.
Hashrate has stabilized to 61MH.
When you lower the memory speed from 1500 to 1200MHz, does it affect the power consumption?
Where do you see the memory controller load?
No it doesn't, well maybe 0-5W.
GPUZ shows it on sensors but only with 390. On 7970 or 290 it isn't listed.
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.The Power in is 136W, 2x = 272W, 580-272 = 310W, the idle = 100w, so there is 210W difference. Are they from the fans or you have a very inefficient power supply?
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.You said the limiting factor is the Core frequency. Does it mean if we use the 390x, we can achieve better hash with the same or lower core frequency?
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.What is the temperature? When you use -100mV, does it work at 1125 MHz? Do you notice the change if you change the memory frequency from 1500 to 1250 or 1000MHz?
Temperatures 65 and 63C, they are mining -100mV/1125 as we speak. Lowering mem speed rises memory controller load, at 1200MHz load is 100%. Lower more and hash starts declining. Overclocking mem to 1600MHz does nothing but drops MCL closer to 70%.
Hashrate has stabilized to 61MH.
When you lower the memory speed from 1500 to 1200MHz, does it affect the power consumption?
Where do you see the memory controller load?
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.How do you find the memory controller load? In which software?
In GPUZ, what is the power in and power out?
GPUZ shows it with 390's. Average in/out 136/107W.
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.What is the temperature? When you use -100mV, does it work at 1125 MHz? Do you notice the change if you change the memory frequency from 1500 to 1250 or 1000MHz?
Temperatures 65 and 63C, they are mining -100mV/1125 as we speak. Lowering mem speed rises memory controller load, at 1200MHz load is 100%. Lower more and hash starts declining. Overclocking mem to 1600MHz does nothing but drops MCL closer to 70%.
Hashrate has stabilized to 61MH.
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.How do you find the memory controller load? In which software?
In GPUZ, what is the power in and power out?
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.What is the temperature? When you use -100mV, does it work at 1125 MHz? Do you notice the change if you change the memory frequency from 1500 to 1250 or 1000MHz?
Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
I did a test, took one old s775 mobo with E8400 + 2 x 2GB DDR2, slammed in two 390's (8GB each), laptop hdd. PSU is not rated corsair CX750M, voltage 228V. Windows 7 x64. Asus has hynix memory and xfx elpida.
Clocks 1125/1500, limiting factor is core. Memory controller load is max 80%.
From the wall:
idle ~100W
mining 680W
mining -100mV 580W
Hashrate
.Do you use Windows MSI Afterburner to undervolate the 390? What is the undervolate level? What is the maximum you can do? Is that over -100 mV?
Yes, afterburner. Maximum is -100mV on both cards.
How much is your power consumption for the XFX 390 cards? What is your clock frequency and the power consumption read from the GPUZ?
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