just some updates:
I tried 280x, 290 and going for 270 now..
290s/quad-aircooled
have a quad 290 in a raven rv03 air cooled... it gets hot, but it works (but I would say close to the limit). heat really increased power draw.
in windows (with every card maxed to 895-905kH and reduced voltage as much as stability allows) the rig draws 1350W (1320-1400W) and over 1500 when not undervolted.
so for now I keep that one on windows ;-)
280x
best efficiency so far is with a 280x (sapphire toxic) at 757kH (1089Mhz, rest is standard 280x settings). i undervolted it (kinda tricky, as it comes stock at 1100 clocks and high voltage (power draw monster!!!). undervolted it draws ~220W (card alone), which is around the best kh/watt I have seen on the net!
270s
i am going to try some 270s now, the idea is to squeeze them between 290s to get airflow/temps a little bit more under control, and also running more efficient (also moneywise) maybe on smaller PSUs.
btw. 1500W Enermax Platimax is just great!
anybody running a quad 270/270x setup? or has anybody modded/undervolted 270s for best hash/watt?
I tried 280x, 290 and going for 270 now..
290s/quad-aircooled
have a quad 290 in a raven rv03 air cooled... it gets hot, but it works (but I would say close to the limit). heat really increased power draw.
in windows (with every card maxed to 895-905kH and reduced voltage as much as stability allows) the rig draws 1350W (1320-1400W) and over 1500 when not undervolted.
so for now I keep that one on windows ;-)
280x
best efficiency so far is with a 280x (sapphire toxic) at 757kH (1089Mhz, rest is standard 280x settings). i undervolted it (kinda tricky, as it comes stock at 1100 clocks and high voltage (power draw monster!!!). undervolted it draws ~220W (card alone), which is around the best kh/watt I have seen on the net!
270s
i am going to try some 270s now, the idea is to squeeze them between 290s to get airflow/temps a little bit more under control, and also running more efficient (also moneywise) maybe on smaller PSUs.
btw. 1500W Enermax Platimax is just great!
anybody running a quad 270/270x setup? or has anybody modded/undervolted 270s for best hash/watt?
HI,
Can you post the setting for the 280x?
Thank you