I doubt they had gotten trough batch 0 without all the refunds however, seems to be some terrible early yields for 20nm :/
Yeah, I surely expected a higher hashrate than around 680-700Gh/s per asic(3500Gh/s /5)
but its still above and beyond the 150Gh/s average on the 28nm Jupiter series asics.(600Gh/s /4)
So a single 20nm Neppie asic actually hashes faster than an entire Jupiter! (4-----28nm's)
So I'm not really going to agree with "Terrible early yields" just because our dreams of a 6th/s Neptune didn't come true...
The 20nm asic is pretty good actually imho... but who else has another 20nm asic to compare it to? Nobody!
They are definitely pretty good.. when they work. You had better luck than I did, I'm weeks into an RMA for two cubes and a controller card that didn't function. I finally received the controller card but absolutely no news on the cubes.