32GB RAM is worth it for multiple VMs.

Yes, if you’re running multiple operating systems at once, upgrading to 32GB will almost certainly improve performance — provided your current RAM is the bottleneck (which it usually is).

Each VM needs its own chunk of memory. When you run out, the host starts swapping to disk, and everything slows to a crawl. 32GB gives you room to allocate 8GB to Windows, 4GB to a Linux dev environment, and still leave enough for your host OS. That’s a luxury most people don’t have at 16GB. At 8GB? Forget it.

That said, RAM isn’t the only factor. If your CPU is old or your storage is a spinning hard drive, you’ll still hit walls. But for the scenario you described — multiple OS at once — RAM is the first thing to fix.

Don’t expect miracles if your CPU is weak, but for RAM-bound workloads, this is the upgrade.