They all cost the same, so here they are:
1. AMD Dual Core A6-4400M 2,70GHz with AMD Radeon HD 8750M 2GB DDR3
2. AMD Quad-Core A8-4500M 1.9GHz with ATI Radeon HD 8570 2GB DDR3
3. AMD Quad-Core A8-6410 2.0GHz with AMD Radeon R7 M260 2GB DDR3L
4. Intel® Core™ i3 Dual Core Processor 4010U with nVidia GeForce 840M sa 2GB DDR3
And maybe I should mention that all of them have their built-in-gpu and all of them have 4GB of RAM
1. AMD Dual Core A6-4400M 2,70GHz with AMD Radeon HD 8750M 2GB DDR3
2. AMD Quad-Core A8-4500M 1.9GHz with ATI Radeon HD 8570 2GB DDR3
3. AMD Quad-Core A8-6410 2.0GHz with AMD Radeon R7 M260 2GB DDR3L
4. Intel® Core™ i3 Dual Core Processor 4010U with nVidia GeForce 840M sa 2GB DDR3
And maybe I should mention that all of them have their built-in-gpu and all of them have 4GB of RAM