@OP
ref the sticky
https://bitcointalk.org/index.php?topic=2415854.0 mainly point-3
Even a now 'ancient' 1st gen USB stickminer from Sidehack gives nearly 20GHs while drawing only 10w. Current cutting edge GPU's give only a few hundred MHs while pulling hundreds of watts.
A good history of
BTC mining hardware from FPGA's on up
is hereThere’s a usb miner from i found on amazon which costs 300 usd for 1.2TH/sec with power supply of 18w/Th it’s from bitmain “ Gamma 601 Bitcoin Miner, 1.2TH/s Hashrate, BM1370 ”
There’s a sale on a website that ships an antminer with 120TH/sec for around 1300usd, they ship and setup too.
Idk how it will extract power supply from usb of laptop 90w charger. Imagine getting 10 of these usb miner setup on the laptop, you can expect laptop crash immediately, can be damaged too unless there’s usb power limit in laptops. Not saying I will do it on the laptop though.
That 20GB/sec usb miner you mentioned shouldn’t be around now.