Bitmain Antminer L7 9300M1. At the 2021 Bitmain Industry Exchange Conference, Bitmain released the latest Litecoin mining machine L7 (Antminer L7). According to official data, the computing power can reach 9300MH/s±10%, and the power is 3425W±10%, and power efficiency of 0.38 W/Mh. One L7 has a computing power equivalent to 19 Antminer L3+. 2. Antminer L7 9300M from Bitmain is designed for mining Scrypt algorithm with a maximum. This mining server uses the industry-leading solutions and an optimized design. Machines are easy to deploy and adaptive to mining farms of different sizes.