4 Gekko Science Bitcoin Miner 2pac USB stick with USB port and Fan

4 GekkoScience Bitcoin SHA256 USB Stick Miner 2PAC BM1384 BTC Currently the most efficient USB miner ever manufactured and is available in limited quantities! The 2-PAC Compac features 2 Bitmain BM1384 chips (this is the same chip as in the Bitmain S5). It has a fully adjustable regulator design that gives you a core voltage range of 550mV to 800mV. Typical hasrate is 15+gh/s depending on clock rate. Efficiency is .31-.35 watts per gh. It’s by no means the most expensive stick miner available, but it is both the fastest and most efficient. In fact, it’s actually the most power-efficient publicly-sold bitcoin miner in the world at this time. Typical hasrate is 15+gh/s depending on clock rate. Efficiency is .31-.35 watts per gh. Currently the most efficient USB miner ever manufactured. The 2-PAC Compac features 2 Bitmain BM1384 chips (this is the same chip as in the Bitmain S5). It has a fully adjustable regulator design that gives you a core voltage range of 550mV to 800mV. Typical hasrate is 15+gh/s depending on clock rate. Efficiency is .31-.35 watts per gh. Features Average speed: 15 GH (Higher speed requires usb port above spec) Power Consumption: 31-35 watts per gh Completely silent operation 2 x Bitmain BM1384 chips Came with USB hub and fan to increase performance, ready to plug and mine