I'm not quite sure if this is the appropriate thread for this, but I believe the lackluster performance of the computer I use at school is network related and not hardware related. We're using Dell Latitude E6510
with i5 540M processors and 4GB of RAM. They're fairly current, but lag like CRAZY. My old Pentium D 820 blows them away and I know it should be the other way around. The computers use ZENworks and seem to have administrative privileges removed. I can't right click or install anything without someone from the county coming out and doing it. Talk about a cake job. My school computer is wired into the network though I am unsure of our connection speed.
I'm not experienced in networking, so I may not be much help. However, I am curious as to why these computers lag and if the excessive security restrictions placed on each machine are to blame? That is my best guess.