I'm looking to help my brother put together a decentish gaming pc for mainly Arma3, DayZ and games like that. I'm going to give him my unused AMD Ryzen 7 1700 processor. He already have a AMD RX480 graphic card and a monitor that I dont have the exact specs for. If I remember correct he also got an unspecified harddrives from my previous build to use (both SSD and mechanical). So we are looking to get the following items: Memory - aiming for 16gb PSU - I'm thinking something around 550W should be enough? Motherboard - What would you recommend? I'm thinking of up to 100 quid in cost. Case - it doesn't need too much soundproofing as my brother got 2 kids making quite a bit of noice anyway Personally I like the Fractal Design cases. I'm thinking I should be able to get some decent stuff for £400-500 for the things he still would need to get? Any suggestions you guys would have?