RV LIFE Forum Hub, Wander The West
Laptop
Kind of Apple's to oranges (pun intended) but my MBP has 16G RAM and a 2.8 GHz Core i7. An SSD makes a huge difference as well, and you'll probably want a decent graphics processor.
Mainly, though, you'll want as much RAM and as fast a hard drive as fits in your budget for running PS and LR.