• Apple Macbook Pro 15 (2011 Model)
• Intel Core i7 @ 2.2GHz
• 500GB HDD
• 4GB RAM
• 512MB AMD Radeon HD 6750M Graphics
• 1440 x 900 Resolution
• $799

• Apple Macbook Pro 15 (2011 Model)
• Intel Core i7 @ 2.3GHz
• 500GB HDD
• 4GB RAM
• 1GB AMD Radeon HD 6750M Graphics
• 1440 x 900 Resolution
•  

• Apple Macbook Pro 15 (2012 Model)
• Intel Core i7 @ 2.6GHz
• 750GB HDD
• 4GB RAM
• Intel HD 4000 Graphics
• 1440 x 900 Resolution

• Apple Macbook Pro 15 (2012 Model)
• Intel Core i7 @ 2.7GHz (CTO Model)
• 750GB HDD
• 4GB RAM
• Intel HD 4000 Graphics
• 1440 x 900 Resolution

Note: Please look properly of the basic specifications. Mostly its PROCESSOR.