As we await the release of FreeBSD 8.0 to deliver a larger operating system comparison, we have carried out a fresh round of tests comparing Mac OS X 10.6.2 and Ubuntu 9.10 (both x86 and x86_64 editions) under a variety of tests. More here

Ubuntu 9.10 (with the 32-bit and 64-bit wins being added together) had won about ten of the sixteen benchmarks in this Mac OS X vs. Ubuntu Linux comparison. Mac OS X 10.6.2 though had a particularly strong advantage in the heavy computational tests like Crafty, the ray-tracing benchmarks, and PostgreSQL.