I presently have a Poweredge 2650 at home running Windows Home Server. Its has dual 2.4ghz CPU's in it and 400fsb and 4gb of PC 1600 ram. I believe I can upgrade to 2.8ghz or 3.02 ghz cpus without doing many major revisions including motherboard swap out and so on but which 2.8 or 3.02 ghz Xeon cpu do I look for??? There are several variant stepping codes on them... SL6M7, SL6YL, etc. The CPU's are inexpensive on E-Bay and available in matched pairs... probably Poweredge pulls. I'm just not sure which CPU version to get? Also can I keep the present voltage regulators I have or do I need to swap those out with the CPU's?