Hi,
I'm currently running an i7 3970x which is completely fine in terms of performance, i'm rarely seeing over 40% CPU load so I don't think it's necessary to upgrade based on performance. However I'm considering buying an RTX 2070 Super, which is where the problems start.
i7 3970x - Intel Ark
The 3970x only supports PCIe 2.0, but has 40 PCIe lanes and can transfer at 8GT/s. I doubt I'll run into a bottleneck, but I'd rather get some opinions before I drop cash on the card.
Cheers.