korbin

5 ms·

1. 1.▲
   by korbin 2y ago

   You can obtain them on capable boards on eBay for $600-1000 - https://www.ebay.com/itm/326181455270
2. 2.▲
   by korbin 2y ago

   SHA256 is designed as such that the maximum amount of data that can be contained within a single block is 440 bits (55 bytes.) If you carefully organize the nonce at the end and use all 55 bytes, you can pre-hash the first ~20/64 round
3. 3.▲
   by korbin 2y ago

   I'm at about ~22GH/s per Xilinx VU9P UltraScale+ FPGA - at least 40GH/s is possible (for around 250W/device.) The nonce alphabet being limited makes the whole thing quite a bit more expensive.