[bombcar]

I wonder if their new GPU somehow is limited on display support (and they basically have to "add cores" to get more displays).

My current 16" MBP has no problem driving a total of five displays and 16,041,600 pixels - and I'd be hard pressed to go back to just two external displays.

[nixgeek]

It’ll happily drive significant numbers of pixels although the resources used by Window Server do appear to scale somewhat proportionate to what you hook up:

https://support.apple.com/en-us/HT210754

I’ve found a Pro Display (6K) and two other Dell 4K works fine, additional to the internal display (it’s a MBP 16” and not running in clamshell mode).

MacBook 16”: 3072x1920

Pro Display: 6016x3384

Dell U2718Q: 3840x2160 (x2)

Total Pixels: 42,845,184

Modern hardware is frankly amazing. I remember the 22” Trinitron CRTs of years ago and owning and driving one of those was a feat, now we have multiple displays with PPI such that with average visual acuity everything is so incredibly crisp.