228m/hash for me in a system that consists of 3 rx480's and 1 r9 390 running on a cosair rm850 supply. second system is 2 rx480's and 2 r9 390's with a xfx 1050 watt supply
I am using two Asrock H81 BTC Pro mobos, both with a Pentium G3260 and 4GB ram. Both have small SSDs with EthOS installed.
Rig 1 has 2 x Sapphire R9 290 tri-x overclocked to core 1100 mem 1250 + 2 x MSI gaming R9 380s underclocked to core 800 mem 1500 + 1 x XFX R9 280x overclocked to core 1100 mem 1500. The system & first 4 cards are powered by a corsair RM1000i PSU pulling about 880-900 watts, the 280x is powered by an old spare Coolermaster 550W PSU, I think pulling about 220 watts.
Rig 2 has 3 reference design R9 290s of different brands, all three are watercooled and overclocked to core 1100 mem 1250 + 1 ASUS Direct CU2 R9 280x overclocked to core 1150 mem 1600. This rig is powered by 2 Thermaltake Smart DPS G 750W PSUs.
Currently hashing about 215-217 mh/s, at about 2.1kilowatts total.
What I really want to do now is get rid of the 280Xs because they hash at about 17-18 and use too much power for that hashrate, and find one or two more cheap used 290s, Sapphire tri-x if possible.
I've got a handful of rigs, but the one I have running at the moment has... 2x Gigabyte RX 480 8GB 2x XFX RX 480 8GB 2x Sapphire RX 480 8GB Frequency set to -16.5% with voltage on auto for now. Memory at 2200 with voltage at 950mV because that is what I know to be stable and I need to put in more time figuring out the stable limits for each card. I get ~162 MH/s in claymore (and only claymore, ethminer original and genoil's fork both give me 144) although every time I check dwarfpool it tells me that they are calculating my hashrate at closer to 180. Temps are ~70C with fans at ~2000RPM. Whole rig uses 880W. Pretty happy with it.
Comments
Get around 140mh/s
- I plan to expand, maybe some 3 x 470/80's once released provided that PoS doesn't kill off the home miner completely
Rig 1 has 2 x Sapphire R9 290 tri-x overclocked to core 1100 mem 1250 + 2 x MSI gaming R9 380s underclocked to core 800 mem 1500 + 1 x XFX R9 280x overclocked to core 1100 mem 1500. The system & first 4 cards are powered by a corsair RM1000i PSU pulling about 880-900 watts, the 280x is powered by an old spare Coolermaster 550W PSU, I think pulling about 220 watts.
Rig 2 has 3 reference design R9 290s of different brands, all three are watercooled and overclocked to core 1100 mem 1250 + 1 ASUS Direct CU2 R9 280x overclocked to core 1150 mem 1600. This rig is powered by 2 Thermaltake Smart DPS G 750W PSUs.
Currently hashing about 215-217 mh/s, at about 2.1kilowatts total.
What I really want to do now is get rid of the 280Xs because they hash at about 17-18 and use too much power for that hashrate, and find one or two more cheap used 290s, Sapphire tri-x if possible.
2x Gigabyte RX 480 8GB
2x XFX RX 480 8GB
2x Sapphire RX 480 8GB
Frequency set to -16.5% with voltage on auto for now. Memory at 2200 with voltage at 950mV because that is what I know to be stable and I need to put in more time figuring out the stable limits for each card.
I get ~162 MH/s in claymore (and only claymore, ethminer original and genoil's fork both give me 144) although every time I check dwarfpool it tells me that they are calculating my hashrate at closer to 180.
Temps are ~70C with fans at ~2000RPM. Whole rig uses 880W. Pretty happy with it.