Apple MacBook Pro 15-inch Intel Core i7 8GB 500GB SSD *New Battery*
This is a higher-end Quad i7 model with hyper-threading, so the OS sees 8 CPUs in the Activity Monitor. It's been upgraded to 8GB of RAM and a 500GB SDD. Used MacBook Pro 15" (MacBookPro9,1) from 2012, with new battery.