Cluster size for Windows

drjackool

Distinguished
Dec 5, 2013
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Hi

I have 2 HDD:
a) WD 500GB Blue 16MB catch
b) WD 1TB Black 64MB catch 1003FZEX

Currently the OS (WIN10x64) installed on 1TB HDD and 500GB HDD is unused (not installed)
I decide to install and allocate entire 500GB to WINDOWS.
Now my question is: Witch cluster size can has best performance for Windows?
4KB or 64KB?
Because the worse space is not significant in 500GB.

Thanks