Question PC GAMING

[hamza.mr]

Hi, basically its my first time building a custom pc and i wanted to know if my specs will actually work if i decide to use them the problem is, is that ive got a budget of around £200 so im currently looking at getting
Case: IONZ PC ATX MID GAMING PC
CPU: intel core i5-6500
GPU: NVIDIA GEFORCE GTX 1050 2GB GDDR5
MOTHERBOARD: GIGABYTE H310M S2H
POWER SUPPLY: 500W POWER SUPPLY ATX COMPUTER PC PSU UNIT 500 WATT 12CM SILENT FAN
RAM: 12GB DDR4 2400MHZ

 

[Colif]

what make/model PSU?
How do you get 12gb of ram? normal amounts would be 8gb or 16gb