For gaming, the acer would be the best value. The A10-4600M has much better graphics capability than the Intel's integrated graphics solution.
EDIT: This would be a good desktop solution, you'd still need a keyboard and mouse...
PCPartPicker part list:
http
/pcpartpicker.com/p/1avLF
Price breakdown by merchant: http

/pcpartpicker.com/p/1avLF/by_merchant/
Benchmarks: http

/pcpartpicker.com/p/1avLF/benchmarks/
CPU: AMD A10-5800K 3.8GHz Quad-Core Processor ($122.68 @ Amazon)
Motherboard: Gigabyte GA-F2A55M-DS2 Micro ATX FM2 Motherboard ($49.98 @ Outlet PC)
Memory: Corsair Vengeance LP 8GB (2 x 4GB) DDR3-2133 Memory ($69.99 @ Amazon)
Storage: Toshiba 500GB 3.5" 7200RPM Internal Hard Drive ($54.98 @ Outlet PC)
Case: Thermaltake VL80001W2Z ATX Mid Tower Case ($19.99 @ Microcenter)
Power Supply: Corsair Builder 430W 80 PLUS Bronze Certified ATX12V Power Supply ($19.99 @ Newegg)
Optical Drive: LG GH24NS95 DVD/CD Writer ($15.98 @ Outlet PC)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Monitor: HP LV2011 60Hz 20.0" Monitor ($79.99 @ Microcenter)
Total: $523.56
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-06-26 13:30 EDT-0400)
That's a $523 desktop PC with Windows and a Monitor that would be a better gaming machine than those laptops you're looking at.