[toyg]

Agree. My experience matches the test, but that's not surprising: I'm sure Office runs better on Windows, too...

[MBCook]

There is nothing magic about Safari. People have been complaining for years, the only reason for Chrome to use that much more CPU is that they clearly don't care. Whether they're not telling OS X when they're idle and can sleep or they're using inefficient older APIs or what, Google needs to fix it.

[psophis]

There is quite a bit of magic that Safari is doing. One example is that it complies javascript down to byte code in LLVM.

[MBCook]

That's not magic, Crome could do the same if Google chose.