According to Mark Russinovich's Windows Internals 5th Edition, Windows uses (small) page sizes of 4 KB on both x86 and x64 architectures to manage memory. Even though I can't find a reason for this, intuitively I'd think SQL Server would use the same size for its own pages but instead it uses page sizes of 8 KB.
I've researched through the documentation and blog posts, but I was unable to find an explanation for this behavior. All I was able to find was that it is the way it is.
I'm definitely not arguing that this is good or bad (and I'm in no position to do so, anyway), I'm just curious and would like to learn the motivation that culminated in this decision.
What is the technical reason for choosing a page size of 8 KB for SQL Server? Why is it a good page size? Or maybe it's just an inheritance from its Sybase lineage?
How does this decision affect SQL Server's performance (meaning how does it interact with the system's memory and disk internally)?
My second thought would be something related to the storage subsystem, but I'm still not sure. (NTFS has a default cluster size of 4KB)