That was extremely fast delivery - got the chips in just a bit over 24h !!!

Test results for my 2 chip string board powered with 2.51V and current is measured as voltage across an 0.4Ohms resitor:

Old setup with rev 1 chips -
chip 0   0.805V
chip 1   0.819V
current   1.9925A (0.797V)

Chip 0 replaced with rev 2 -
chip 0   0.812V
chip 1   0.819V
current   1.9875A (0.795V)

Both chips replaced with rev2 -
chip 0   0.812V
chip 1   0.816V
current   1.9825A (0.793V)

Please note, that the expected GH are calculated based on rev 1 cores (756) and will be even more when recalculated for the proper number of cores (864) for rev 2 chips