HELP: Budget gaming laptop under $500

[hypebeast]

After looking up some PC builds, i ultimately decided that I should also consider getting a laptop for portability and mobility just in case, I was wondering if anyone here knew anything about good gaming laptops under 500?

I live around the markham area in ontario, canada so I'd prefer if i could pick something up from a local store such as canadacomputers or ncix.

Currently looking at :

http://www.canadacomputers.com/product_info.php?cPath=710_577_369&item_id=061873

and

http://www.canadacomputers.com/product_info.php?cPath=710_374&item_id=064014

but i'm not sure if these are cost efficient options


looking to play bioshock infinite on low-medium if possible, that would be really nice

thanks in advance :]

 

[Anker]

Many people suggest this one under $500
Lenovo G505s 15.6-Inch
AMD A8-5550M 2.1 GHz
500 GB
5400 RPM
4GB DDR3
Radeon HD 8550G
Windows 8

 

[Anker]

Here are examples on what you can get for $500 http://gaminglaptopunder1000.org/best-cheap-gaming-laptops-under-500-dollars/