My first (and only) experience with Vista was with a stripped-back Toshiba Satellite A135 my mom bought my brother and I during some Black Friday sale. It had one single 512MB RAM stick. I still have a screenshot kicking around somewhere of the "Windows Experience Index" of 1.0 or 1.5 or something (1.0 was the lowest) that also shows the RAM amount. We made it work, though. Many good memories of recoding Xbox360 footage using some Lexar capture box that only accepted analog RCA in as the laptop cooked itself alive sitting on the carpet in front of the TV.

I had a big problem with BSODs caused by Nvidia drivers. Of course, you could argue that this was Nvidia's fault, not Vista's, but this was somewhat academic. I moved back to XP (and also started using Linux) and all these problems went away, and I got a lot more out of my RAM to boot.