[Bioclusters] cluster hardware question

[Duzlevski, Ognen]

Hi,

I noticed a huge difference in pricing of dual 2.8 Ghz Xeons as opposed
to 2.4 Ghz ones. Is there an equal difference in performance between the
two? Or is it just a matter or hot-off-the-press vs.
been-there-for-some-time? :)

Additionally, what is the general feeling on dual-athlons vs. dual-xeons,
both in terms of performance and possible upgradeability, within a
cluster?

Any opinions, experiences and advice appreciated!

Ognen