Collider, jtoomim, Roadsress or anyone with the early machines:
Please post your statistics and whether you achieved sustained ~4.5TH at 208-220V (please post your voltage) and what was the speed at 110/120V if applicable (I assume 4.1Th). Thanks.

Hosted at SP's DC so 220V, it hashes at 4.4Th (22.5min has a lot of variance but 3-12 has low variance), the downtime was the DC issue that Guy reported here.