hi all i am writing specification for polytechnics related for lab, the regulator said, 1 PC must be for 1 student and several polytechnics have limited budget can share all? i have Pentium 4, run in single node :) but i think multicore processor are better, so for play around i recommend i7, for server i recommend 2 core Xeon for lab. my plan 1 PC = 1 student we will create group, to make student can do multinode. -- Frans Thamura (曽志胜) Chief of Advisory Meruvian. Integrated Hypermedia Java Solution Provider. Mobile: +628557888699 Blog: http://blogs.mervpolis.com/roller/flatburger (id) FB: http://www.facebook.com/meruvian TW: http://www.twitter.com/meruvian / @meruvian Website: http://www.meruvian.org "We grow because we share the same belief."