CES 2014 revealed the thinnest gaming laptop with sli the Gigabye AORUS X7 with the following specs:

• NVIDIA Geforce GTX 765m with 2GB GDDR5 SLI (4GB IN TOTAL WITH THE SLI)
• Intel Core I7 4th generation (not yet specified in my opinion it could be the 4700 HQ)
• Insanely Thin 0.9 inches/6.39 lbs
• Innovative Aorus thermal design
• High customable macro keys
  

Best gaming laptop in the world is the alienware 18 by Dell. Here are the specs of these next generation computer:

• Overclocked 4th generation intel core i7 4930mx
• Nvidia geforce gtx 880m sli 4gb GDDR5
• 32 GB DDR3L RAM
• 1TB SSD quad raid 0