ssd speeds
Left is the 7200rpm 100gb drive that came w/my X61s. It scores 5.9 in Vista's experience rating for disk throughput. This was on Vista x86.
Right is the Intel X25-M G2 80gb 34nm SSD (snagged it from Newegg at the non-scalper's price - $229 + $5.99 shipping w/3% Bing Cashback). This is x64 Win7.
I can't get Win7's experience rating working at this moment due to driver incompat issues i'm running into (specifically Intel Turbo Memory), but CrystalDiskMark shows that the SSD crushes the 7200rpm in every realm, EVEN with the X61s being limited to SATA1 speeds. =]
edit: got the experience rating to run - the SSD scores 6.9
From using the machine, the most noticeable increase in speed is when un-RAR'ing files and installing Photoshop. My god is that fast.