What is good parts for a gaming pc which is $500 (AUSTRALIA ONLY)?

I've got some parts and i'm wondering if its good parts that can handle minecraft and league of legends with no lag.

CPU: AMD FX-6300 3.5GHz 6-Core Processor
Motherboard: Gigabyte GA-78LMT-USB3 Micro ATX AM3+ Motherboard
Memory: Kingston 4GB (1 x 4GB) DDR3-1600 Memory
Storage: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive
Video Card: XFX Radeon R7 250 1GB Video Card
Case: Cooler Master Elite 431 Plus (Black) ATX Mid Tower Case
Power Supply: Silverstone Strider Essential 500W 80+ Certified ATX Power Supply

Those are the parts l found and researched it and it said it was good but i'm not sure if its that good for games like minecraft and league of legends l just want to play those two games. If you think you can get better parts that can come up with $500 l would appreciate it if you would post it and please put link to find it and must be from australia and all together this build is $570 l couldn't find any $500 because everything was just to expensive and not many are from australia thank you l rate 5 star for best answer

This is my first time building a computer if you think this might not really be good l got a alternative computer here please look at it
Link 1: http://www.ebay.com.au/...0957794683
Link 2: http://www.ebay.com.au/...0956655188

Install this first and then try installing league of legends.

http://www.freewarefiles.com/Microsoft-Visual-C-2012-Redistributable-x86_program_78881.html