Did you pull the cards out and make sure all the heatsinks were tight? In Blades, low efficiency is usually due to chips overheating from poor heatsink contact, and these Cubes are notorious for loose screws upon delivery.
Right I unscrewed the device, pulled all the cards out, screwed a few of the loose heatsink screws in tighter and put the unit back together.
Now I can get the cube to hash at 31693MHS with an efficiency of 96.58% in low clock speed, if I switch the clock to high both the hash rate and efficiency start dropping, I also noticed one X today which wasn't there yesterday after I put the device back together:
ASIC_01-16: O O O O O O O O O O O O O O O O
ASIC_17-32: O O O O O O O O O O O O O O O O
ASIC_33-48: O O O O O O O O O O O O O O O O
ASIC_49-64: O O O O O O x O O O O O O O O O
ASIC_65-80: O O O O O O O O O O O O O O O O
ASIC_81-96: O O O O O O O O O O O O O O O O
Can anyone shed any light on why my hash rate and efficiency might be dropping when I try to run the device in an overclocked state?
I've opened this cube up again twice and removed and re seated the modules and am now back to square one. Thought I was making progress and now I'm right back to where I started
ASIC_01-16: O O O O O O O O O O O O O O O O
ASIC_17-32: O O O O O O O O O O O O O O O O
ASIC_33-48: O O O O O O O O O O O O O O O O
ASIC_49-64: x x x x x x x x O O O O O O O O
ASIC_65-80: O O O O O O O O O O O O O O O O
ASIC_81-96: O O O O O O O O O O O O O O O O
MHS:29513 Efficieny:098.55% on the Low clock setting
The screws on the heatsinks are as tight as can be, could I possibly have a duff cube?? Would re-arranging the modules make a difference??