- First model to use native SATA hard drives (Intel 915 chipset, same as T43/R52/X41, could be considered a widescreen T43 with a SATA mod in some ways), no AHCI however
- First model to use a widescreen display (sadly both of mine have the WXGA, which is OK but I'd have preferred the WSXGA+; neither of mine have the famous titanium lid)
- First model with optional WWAN-3G (through mini PCIe slot; WLAN still uses the old mini PCI card)
- First model to use the 20V AC adapter/jack (later used on T60, T61, etc.) and T6x/R6x battery connector (however standard 6 cell batteries do not fit, 9 cell will however)
On the X600 one, I put a 120GB SSD and Windows 2000 on it (just because
Could also consider it an unofficial successor to the G41, because like the G41 its models ranged from the bottom-end (Celerons without WiFi and integrated graphics and only a DVD/CD reader) to the top-end (Pentium M 2.0GHz with DVD burner/ATI 128MB/WWAN/Bluetooth)








