Tbh John unless you want to be a willy-waver over your PC ‘s speed, most three year old PCs will run anything you throw at them. In today’s environment the GPU is still probably the most important thing to upgrade when you hit a limitation. You will rarely run into a CPU limit as even today many games only multithread the stuff the GPU handles. I/O is something else and an SSD is an essential.
However as said elsewhere steer clear of Dell and laptops if you want the flexibility of occasionally doing some willy waving.
On my three years old PC the only thing that makes me think about upgrades are i/o bus limitations hitting multi-vm performance, and I would guess that very few others hit that particular issue. (Main cause is a Windows 10 VM hogging the bus to talk to mother M$ and failing to recognise the presence of other vms equally wanting bandwidth)
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