There’s also 2GB of RAM as standard on the X220, along with a 250GB hard-drive and Intel HD Graphics 3000. The X220T gets 4GB of RAM but the same HDD and GPU. Both have WiFi b/g/n as standard, and can be configured with Bluetooth and/or integrated WWAN.
Meanwhile the Lenovo ThinkPad Edge E220s is also up for sale today, priced from $749 with the Core i5 processor and from $819 with the Core i7 processor. It has a 12.5-inch display and Intel HD Graphics 3000.