Here's my similar runs on a E3-1230 v5: b3sum ./1GB 0m0.124s md5sum ./1GB 0m1.620s sha512sum ./1GB 0m2.988s sha256sum ./1GB 0m4.738s I was

Here's my similar runs on a E3-1230 v5: b3sum ./1GB 0m0.124s md5sum ./1GB 0m1.620s sha512sum ./1GB 0m2.988s sha256sum ./1GB 0m4.738s I was even more impressed when I timed dd: $ time dd if=./1GB of=/dev/null bs=65536 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.10451 s, 10.3 GB/s real 0m0.107s