Hi, I've got a 100Mbit NIC and used iperf and netperf to test them. The measured throughput is around 92Mbit. My question is what causes the degrade in performance?? Overhead in packets?? CPU clock speed(My desktop uses P3-500MHz)?? Best, William __________________________________________________ Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! http://platinum.yahoo.com