I am thinking of upgrading my harddrive's in my server. see also this. If you had the choice, what would you pick a regular 7200 Rpm SATA harddisk or one of those 'Green' drives that operate on 5400 Rpm platters? Would performance decrease significantly, or would i hardly notice this change? Currently the server is equipped with 2x Seagate Barracuda's 7200.10 (ST3160815AS) with a 8MB buffer. Would i notice much difference using one of the latest 'green' drives? Does it really save me a significantly amount of $ using 'green' drives? The server is used mainly as mail server (only a few account, 2 domains) and webserver (Virtualized with Hyper-V) and a few MySql databases, so no real stress on it.