I am running an Intel P4 prescott with HT on my home server (linux file server on encrypted disks on software-RAID5 and virtualisation host for three further machines). The performance for this purpose is really okay. When the system is idle it consumes about 140W power.
I am considering buying a new mainboard for an e.g., intel i3-2100T or an Intel i5-2390T. Both are low power CPUs with a TDP about 40W.
Has anyone experiences how much power a recent mainboard with one of these CPUs a 3-4 'green-energy' disks (6W each) consumes? Do I get underneath the 100W threshold?
What's about the performance of these low power CPUs? Are they comparable to an Intel P4 with HT?