Antminer Z15 vs AvalonMiner 821

We are reviewing time-tested solutions Antminer Z15 and AvalonMiner 821. Despite the release of new generations, these models are still active on the market. Different algorithms (Equihash vs SHA-256) mean different strategies: Antminer Z15 mines Zcash, while AvalonMiner 821 is focused on Bitcoin, Fractal Bitcoin. Model Bitmain Antminer Z15 is presented exclusively in a configuration with 420kSol, other power options are not provided for this series. Model Canaan AvalonMiner 821 is presented exclusively in a configuration with 11.5Th, other power options are not provided for this series. Model Antminer Z15 420kSol has a power consumption of 1512 Watts, while AvalonMiner 821 11.5Th consumes 1199.45 Watts. Both miners use air cooling, which requires good room ventilation. 4 ads found for Bitmain Antminer Z15. The current cost for 420kSol power is from 291700 RUB. Both new and used devices are available. Unfortunately, AvalonMiner 821 is currently not available either in stock or on order. Please try looking at other models.