Ubuntu 9.04 vs. Fedora 11 Performance
With Bwfirt ray-tracing the performance was indifferent between Fedora and Ubuntu.
With C-Ray, which is supposed to be a very simple ray-tracing engine, the lead was in Ubuntu's favor by about 12% -- 110 seconds versus 125 seconds for Ubuntu and Fedora, respectively.
The timed MAFFT multiple sequence alignment was very close between Ubuntu 9.04 and Fedora 11.