Looks like Opterons would be unbeatable if only you could install enough RAM.
I think Quanah had some Linux/Operton numbers up somewhere, but I can't find them at the moment. Are they comparable (methodology) to the numbers on the site? If not, I'd be curious to see some rows for Sun 4100/Linux added to the table.
--Quanah
-- Quanah Gibson-Mount Principal Software Developer ITS/Shared Application Services Stanford University GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html