of 4 units:

a) 231.25MHZ = 452Gh
b) 218.75MHz = 429GH (one chip is shown as -  though, so presumably im losing about 12GH)
c) 250MHz = 502.5GH
d) 218.75MHz = 428GH (one chip is shown as -  though, so presumably im losing about 12GH)

ive tried rebooting the two systems with the dudding chips but to no avail. has anyone had and resolved this issue? (with the S1 a reboot always seemed to solve it)

overall im not terribly impressed with the quality of the components bitmain used. hopefully its a batch-specific problem though and wont occur again.