Pretty much in today's world, you're looking at either a Core 2 Duo or a Core 2 Quad with at least 2GB of DDR2 800 (PC2-6400) RAM. You're also going to want to check out SATA-II HDDs and DVD burners. If you have no beefs with nvidia, I'd suggest their 512MB 8800GT for graphics as it has the best price/performance. If you do have a problem with nvidia and want to support ATi instead, go for the HD 3870 (which is just a touch slower but generally comparable to the 8800GT).
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Thor:
Intel Core i7 4770K|ASUS Z87Pro|32GB DDR3 RAM|11GB EVGA GeForce RTX 2080Ti Black|256GB Crucial M4 SSD+2TB WD HDD|4X LG BD-RE|32" Acer Predator Z321QU 165Hz G-Sync (2540x1440)|Logitech Z-323 2.1 Sound|Win 10 Pro
Explorer (MSI GL63 8RE-629 Laptop):
Intel Core i7 8750H|16GB DDR4 RAM|6GB GeForce GTX 1060|128GB SSD+1TB HDD|15.6" Widescreen (1920x1080)|Logitech R-20 2.1 Sound|Win 10 Home
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