on the pc part pick list top right you see the power consumption, so anything in the 450-550w of quality will be good
why double the requirement, it is a rule of thumb to peek your PSU running at 50-75% of Max Wattage
Note: Wattages are estimates only. Actual power draw may differ from listed values.
Component Estimated Wattage
Intel Core i5-6500 3.2GHz Quad-Core Processor 8W - 65W
Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler 5W - 10W
MSI Z170A GAMING M5 ATX LGA1151 Motherboard 17W - 70W
G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2400 Memory 11W - 11W
Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive 4W - 20W
MSI GeForce GTX 1050 Ti 4GB Video Card 18W - 75W
Creative Labs Sound Blaster Zx 24-bit 192 KHz Sound Card 5W - 10W
Total: 68W - 261W