Released in May 2011, the Sensation is powered by a dual core Qualcomm Snapdragon processor and high performance Adreno 220 GPU. It has 768MB RAM and 4GB internal storage, along with a microSD slot supporting up to 64GB. The Sensation was the first device to ship with HTC Sense 3.0, which runs on Android 2.3.3 (Gingerbread). It was later updated to HTC Sense 3.6 and Android 4.0 (Ice Cream Sandwich). The styling of the Sensation utilizes a unibody aluminium casing, much like previous HTC flagship devices.