The TI-Nspire CX is the most powerful of TI's calculators. Running off an ARM processor, it can handle advanced calculations and graphs quickly and easily. The TI-Nspire CX was introduced in Febuary of 2011, along with the TI-Nspire CX CAS.
CPU: ARM926EJ-S @ 133MHz
LCD: 320x240-pixel color LCD
Ports: Mini USB. No DBUS (2.5mm I/O) port.
Power: Rechargeable lithium-polymer battery
Battery Life: "the TI-Nspire Rechargeable Battery is expected to last up to two weeks of normal use on a single charge."
Operating System (OS): TI-Nspire Handheld Operating System 4.0, Linux with jailbreak