The three from my customer are capped at 1100W, as per Zvi's recommendations. They're each hashing stably at around 3950 GH/s. Currently, I'm seeing 3923.69 GH/s, 3951.675 GH/s, and 3982.555 GH/s. These three are all running 2.2.35.
This simply isn't the advertised (after adjustment) 4.5TH. WTF? Is spondoolies trying to lower the rate still further? 6.5Th -> 6.0TH -> 5.5TH -> 4.5Th -> 4.0TH. Where does this stop?
4 is about 60% of 6.5. That sucks tremendously. That is not a simple engineering estimation error. That is a major defect.
Product was advertised at 5.4Th/s. The 6Th/s was an added bonus and not available for long and for many customers. SP10 had a drop in hashrate on 110V so it was expected to be the same for SP30. The machine can do 4.5Th/s, but you just need to supply it the proper power.