The RB2 bitstream was released to all registered users on December 21. This algorithm currently supports thousands of FPGA’s. If you have not already received RB2, then please complete your registration by sending a video mining 0xBTC to info@zetheron.com.
Also, the profit table has been updated. If you are willing to deal with low trading volumes, Sedo on 0xToken is the most profitable at the moment: