The X220 Tablet is outfitted with second-generation Intel Core processors, which are also known as Intel’s new Sandy Bridge chips. Our review unit had a Core i5-2520M (2.5 GHz, 3MB cache), but the X220 Tablet is also available with Core i7 or Core i3 processors. All units sport Intel integrated HD graphics.
According to our benchmark numbers, the X220 Tablet blows away the other tablet convertibles we’ve recently reviewed and compares favorably against some popular and powerful laptops. The X220 Tablet will be able to handle just about anything the business user throws at it, including intensive video and image editing, HD video – really, just about anything business related.
Gaming is a different story despite the X220 Tablet’s 3DMark06 score. Although Intel’s integrated graphics solution supports many popular games, including World of Warcraft and Left 4 Dead 2, it’s still not a viable alternative for demanding gamers.
The X220 Tablet did not match the battery performance NBR found on the X220 notebook, lasting 5 hours and 10 minutes on the included six-cell battery. The X220 notebook went for 8 hours and 47 minutes running the same tests, with Windows 7 set to “balanced,” Wi-Fi on, and the same webpage loaded every 60 seconds.
The discrepancy is most likely due to the Tablet’s touchscreen, as past reviews have discovered touchscreen devices typically consume more power than their notebook counterparts.
Lenovo also included an optional six-cell battery slice with our review unit that adds an additional 1.8 pounds and extends the X220 Tablet’s battery life to 11 hours and 13 minutes.
Heat and Noise
The Lenovo X220 Tablet remained cool and quiet during everyday use, including moderate web surfing and Office tasks. However, things heated up relatively quickly under strain, especially when running benchmarks. The heat remained concentrated on the left and middle, peaking at 105 degrees Fahrenheit while stressed. Things stayed cool during average use, and unless you are editing HD videos while wearing shorts and resting the X220 on your lap, heat should not be an issue. The fan noise suggests the X220 Tablet works hard to dispense the heat, and while never what I’d call loud, it is audible. Some heat and noise is expected, given the X200’s stellar performance.