You mean the boards from C1?
Once I have tried connecting my Antminer S3+ to hashing board from C1 (Batch 2) and it appears that
- C1 hashing boards have a default voltage which causes them to have efficiency of ~0.8w/GH
- C1 controller undervolts boards at startup (efficiency is about ~0.73w/GH)
- S3+ board does not seem to undervolt the board from C1
I need to be sure that the hashing board doesn't turn out to have efficiency of ~0.8w/GH.
No. Today it is left only 2x C1 board. and 1 x S3 controller.
I sold out 4 x S3 for parts, after my first post in this thread.
https://bitcointalk.org/index.php?topic=858962.msg11959170#msg11959170