It's HDD (Hard Disk Drive) and RAM are easily replaceable. It comes in more than one version. The USD 1,300 (Rs.52,000) unit has a 1.5 GHz Core 2 Duo Processor, 2 GB of RAM, 30GB HDD, and Intel X3100 intergrated graphics. The USD1,800 (Rs.72,000) unit packs a punch with a 2GHz processor, 3GB of RAM, 500GB HDD, and Mobility Radeon HD 2600 graphics. The system also has a built-in webcam. The One Desktop is going to be announced tomorrow - so wait for the availability to be disclosed.