This would be more of a budget build that would pair nicely with your 570. Again, I would say a SSD is a must.
PCPartPicker part list:
https://pcpartpicker.com/list/yx46MZ
Price breakdown by merchant: https://pcpartpicker.com/list/yx46MZ/by_merchant/
CPU: AMD - Ryzen 3 2200G 3.5GHz Quad-Core Processor ($99.00 @ Amazon)
Motherboard: MSI - B350 TOMAHAWK ATX AM4 Motherboard ($59.99 @ Newegg)
Memory: G.Skill - Ripjaws 4 Series 8GB (2 x 4GB) DDR4-3200 Memory ($102.99 @ Newegg)
Memory: G.Skill - Ripjaws V Series 8GB (2 x 4GB) DDR4-3000 Memory ($101.99 @ Newegg)
Storage: Samsung - 850 EVO-Series 250GB 2.5" Solid State Drive ($99.89 @ OutletPC)
Total: $463.86
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-02-19 14:59 EST-0500