There are a few hacks here and there that, I assume, introduce a bit of overhead, but the real problem with 10 is the absolute disregard the Windows team has for performance.
Windows 7 has the same level of compatilibity (or perhaps even more, as I'm sure more software is compatible with it) but it's much lighter.
Windows 7 has the same level of compatilibity (or perhaps even more, as I'm sure more software is compatible with it) but it's much lighter.