What's the speed on these and power consumption? I know what the spec sheets say, but there were some problems with the batches.
These are from the first batch if that helps. Speed is ~4.45Th/s for ~2.9kW. These specs vary based on your cooling conditions.
How about underclocking? Are the numbers comparable to the sp20e except 30 chips instead of 8? Can these units achieve the same underclocking benefits that the Sp20e can (ie. low .5w/gh)?