Hi, the cpu's are your decision, but for performance, you'd want to give consideration to the backplane/shared-memory/high-speed interconnect adapters, which is where it counts. I say this based on our experience in working with and selling large clusters overseas. I hope this helps, cheers
Norm -- E-Solutions for BSD and Linux http://www.paladincorp.com.au/ -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
