ThinkPad P15

Since you mentioned nothing on the OS, I'm going to assume you're planning on using windows. You also didn't specify a budget, which is a major point in guiding you to a suitable device. I'd mainly aim for: ThinkPad L15 - the cheapest of the bunch. Usually great price/performance ratio, fully expand

A “P15 with i9” is a Lenovo ThinkPad P15 workstation - powerful, expensive when new, but great for CAD because it comes with professional GPUs (NVIDIA Quadro/T-series), ECC-capable RAM, and strong cooling. You can find older generations refurbished for a fraction of the price, and they still handle

Gotcha. If ram/repairability and budget are together at the top of the priority list, I'd mention that Latitude 5440/5540 have fully sodimm'd RAM and can be upgraded to 128gb of the stuff, once prices float down. Buying one with 32gb installed today shouldn't be that big of a premium on the used mar

So idk man, you went a little over the line. It will defenitly serve but its heavy. Plus not the best battery. If you need a gpu and a cpu capable of coding and ai. I would recommend you get something lile a dell latitude, a thinkpad p or t, or a hp zbook with a gpu.the research is up to you, but an