From the slowest/weakest to the fastest/strongest version :
- orion64-v1.1.exe             : slowest and weakest version
- orion64-v1.1-pop.exe         : slow and weak version
- orion64-v1.1-pop-avx.exe     : fastest and strongest version

Each version requires support of some (sets of) instructions :
- orion64-v1.1.exe             : 64-bit processor
- orion64-v1.1-pop.exe         : 64-bit processor + 'popcount' instruction
- orion64-v1.1-pop-avx.exe     : 64-bit processor + 'popcount' instruction + 'avx' and 'avx2' sets of instructions
