Dell Alienware M17X Series ATI Radeon HD4870 1GB MXM Laptop Video Graphics Card NHCHW 0NHCHW CN-0NHCHW.
ATI Model Number: Radeon HD 4870
Dell Part Number: NHCHW 0NHCHW CN-0NHCHW
Compatible Part Numbers: 109-B87631-00 109B8763100
Compatible Models: Dell Alienware M17X Series