>>513
https://www.dell.com/ja-jp/shop/gaming-and-games/alienware-m17%E3%82%B2%E3%83%BC%E3%83%9F%E3%83%B3%E3%82%B0-%E3%83%8E%E3%83%BC%E3%83%88%E3%83%91%E3%82%BD%E3%82%B3%E3%83%B3/spd/alienware-m17-r2-laptop

https://kakaku.com/item/K0001232408/spec/#tab

https://kakaku.com/item/K0001125012/spec/#tab

このあたりでどうです？