Now SSD is cheap enough, less than 200 can get 120gb, or less than 300 for 250gb. It makes a world of difference compared to disk plated hard drive.

I recently do a clean install of Windows 10 1709 on Atom z8300 powered system with 2GB RAM. The system is much smoother now, RAM usage only 900mb when nothing is opened.

Search for SSD at Lazada

Nvme SSD
But it's still very expensive though.

That's the main drawback of SSD, storage size.

Some laptop have 2.5" and m.2 sata port, so can have SSD on m.2 sata and normal HDD on 2.5"

Or if older laptop that have 2.5" and CD/DVD drive, can SSD on 2.5" and normal HDD with adapter in CD/DVD drive.

That is SATA la.

I'm saying to the person that I quoted about newer tech which is nvme ssd, but it's still very expensive.