The Antminer S2 still offers you the best speed versus price for one th/s. On top of that the S2 will probably be deliverd inside the best attainable problem. Bloggers and sector professionals praise the S19 Pro for its superb hashing ability and energy performance. People often emphasize its reliability https://refurbishedantminerz1573950.liberty-blog.com/39396666/5-essential-elements-for-used-antminer