Gan mau tanya untuk leppi yg kuat buat main game

Acer Aspire E1-451G
- Processor AMD Quad-Core Processor A8-4500M 1.9 ghz, Ram 4 GB DDR3, Hdd 500 GB, VGA AMD Radeon HD 8750 2GB

Lenovo G400 - 5010
Processor: Intel® Pentium® 2020M Processor, AMD Radeon™ HD8570 2Gb, RAMAXELL 2GB DDR3 PC 12800, 500GB

ASUS U46S
Intel i5 2,3Ghz SandyBridge, NVIDIA GeForce 540M Optimus 1gb, Ram 4GB, Hdd 640 GB

HP Pavilion g4-2010TX
- Intel Core i5-3210m @2.50Ghz (4CPU's), 4GB DDR3, 640GB HDD, Dual VGA Intel HD4000 + vga ATI Radeon 7670M 1gb Dedicated

Kalau untuk fokusnya main game2 berat kaya cod ghost, ac black flag, skyrim, watch dogs dkk, bagusan yg mana ya gan ?
Mohon Pencerahannya agan2 sekalian