Time to upgrade my laptop – need advice please

Looking for a high-performance PC (non-Mac) for data-heavy workloads — suggestions?

It's time to upgrade. I'm looking for a Windows/Linux-compatible machine (no Mac) that can handle:

Large spreadsheet workloads (think multi-GB Excel/CSV files)

4K+ video editing and exports

Possibly some ML experimentation later on

I was considering a high-end gaming PC for the GPU + RAM benefits, but not sure if that’s the best tradeoff for thermals, noise, and form factor. Open to desktop or laptop, though portability is a plus.

What builds or machines would you recommend in 2025 for blazing speed + stability?