"Randall Kennedy put the Windows 7 engine on a real
test-bench and discovered that, at the kernel level, "When viewed
side by side in Performance Monitor, Vista and Windows 7 were
"In case you haven't used Vista, that means you can expect
Windows 7 performance to be lousy. Kennedy ran the same application
performance tests comparing XP and Vista and found that Vista ran
40% slower than XP. I've said it before, I'll say it again, if you
must run Windows, run XP SP3."