What to build with the leftovers?!

[r0ckstar]

Budget (including currency): Open to what will best match the RX580

Country: Canada

Games, programs or workloads that it will be used for: Mostly CS:GO / Xplane and web browsing

Other details (existing parts lists, whether any peripherals are needed, what you're upgrading from, when you're going to buy, what resolution and refresh rate you want to play at, etc): 

 

I currently got a 512gb NVMe drive, AMD RX580, Corsair AX760i powersupply NZXT ATX case, 2tb mechanical drive, all left over from other builds. What motherboard / CPU / ram combo should I get to compliment this hardware and to mostly place CS:GO / Xplane?

 

[F.E.A.R.]

This is what I suggest, so you won't have to upgrade your motherboard in the future, instead only the GPU.

 

PCPartPicker Part List

Type	Item	Price
CPU	AMD Ryzen 5 3600 3.6 GHz 6-Core Processor	$266.00 @ Vuugo
Motherboard	Asus PRIME X570-P ATX AM4 Motherboard	$214.99 @ Memory Express
Memory	G.Skill Ripjaws V Series 16 GB (2 x 8 GB) DDR4-3200 Memory	$95.99 @ Newegg Canada
	Prices include shipping, taxes, rebates, and discounts
	Total	$576.98
	Generated by PCPartPicker 2020-05-12 13:28 EDT-0400