separate SSD just for windows and programs,

If you want to have a separate disk just for windows and programs, how big an SSD would be needed.?

Am I right the programs need to be on the same disk as windows because of registry entries?

Me2U2

https://www.boards.ie/discussion/2058222733/separate-ssd-just-for-windows-and-programs

1TB SSDs seem to come out faster in most of the tests I've seen, even in the same make and model. You can get a 256GB that will do, but the lifespan will also be shorter in the long term. The larger the SSD the more the data read/write operations can be spread out. This reduces degradation of the SSD, which would otherwise lead to eventual corruption and failure.

You can uninstall programs and then re-install them on a separate SSD to be safer. I used to keep Windows on a 128GB SSD and all my programs on a separate 1TB D: drive, until I found out about the speed and reliability of using a 1TB C: drive.

https://www.westerndigital.com/en-gb/products/internal-drives/wd-blue-sn550-nvme-ssd#WDS250G2B0C

what about this for the OS and programs?

smuggler.ie

https://www.boards.ie/discussion/comment/118322025#Comment_118322025

It depend.

Win10 alone ~ 20GB give or take, but don't forget when it comes to updates/ version release, so double it at least.

Then your programs and this is where it might differ a lot, depending on your intentions. Some games - 50-70GB for one

Course you can start with 120GB or 250GB and by the time you find yourself short on space you just get bigger drive and clone everything from old. Its just a tiny bit of hassle cloning and .... what will you do with that small disk thereafter - bit of waste, unless use it in enclosure as your USB drive. You will need enclosure for cloning anyway , ~30 for decent one.