Oh yeah, 4 GB would be really rough on Windows 10.

The machine I had before this one had 2 GB of RAM and I ran Windows 7 on it. It had a Core 2 Duo E6420 CPU and GeForce 9800 GTX+. I remember things being mostly ok for playing a bunch of games back then but struggled when I tried to run VMs which makes sense given 2 GB of RAM.

It was that machine that taught me not to skimp on RAM. The last few years of that machine's life started to get pressured pretty hard with memory requirements and having 4 GB would have solved all of those problems. That's why when I built this machine I went with 16 GB, back in 2014 still running Windows 7.