Hi All, Finally upgraded last night from Intel P4 3Ghz (Northwood core) DDR400 to AMD64 3800+ AM2 DDR2 800 early in morning today (2:00AM). Quickly ran test and was getting little over 5msec total transaction response time over internet for single hop short distance was 7-8msec before upgrade. Still on Windows 2000 professional OS but hope to find Vista somewhere and test 64-bit operations then will mention results here. Interesting but expected vast improvements in database access (from 6msec to 1 msec improvement). reason I expect is faster memory since improvements were probably from in-memory tables/data. Have not upgraded client (windows xp sp2 Centrino Duo DDR2) so expect will probably reach only to 3-4msec transaction time as measured at client. Will make measurements over next day or so to see if reached 1usec or better trnasaction time per thread at app server (JBoss 4.0.4 GA). Have fun all! -Tony Anecito View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3966274#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...