All the specs for the i7 unit are here:

https://www.dell.com/support/manuals/en-us/alienware-15-laptop/alienware-15-r3-setupandspecifications/views.

The laptop is in very good condition - there are a couple of minor scuffs on the outer case. Alienware icon power button still has the protective plastic on it (a sign of how little use this has had). 

**unlike others.... this unit comes complete with functional OEM power adapter as shown in photos and IEC power cord**

Happy to answer any questions or provide more info via eBay message.