You could check this list out. You can recycle your psu and use it on your new build. You can change the case (i just took the cheapest case) or use your existing case for your new build and storage
PCPartPicker Part List
Type
Item
Price
CPU
AMD Ryzen 9 3900X 3.8 GHz 12-Core Processor
$429.00 @ Amazon
Motherboard
MSI B450 TOMAHAWK MAX ATX AM4 Motherboard
$124.99 @ Newegg
Memory
G.Skill Ripjaws V Series 32 GB (2 x 16 GB) DDR4-3200 CL16 Memory
$106.99 @ Newegg
Storage
Samsung 970 Evo 500 GB M.2-2280 NVME Solid State Drive
$89.99 @ B&H
Video Card
MSI GeForce RTX 2070 8 GB VENTUS GP Video Card
$419.99 @ Newegg
Case
DIYPC DIY-BG01 ATX Mid Tower Case
$47.96 @ Newegg
Prices include shipping, taxes, rebates, and discounts
Total
$1218.92
Generated by PCPartPicker 2020-08-24 22:21 EDT-0400