I have an early 2008 MBP, 15", 2.5ghz with the GE Force 8600m GT. I also have 4gb of ram. I didn't notice a huge difference in speed coming from my Powerbook g4, 15" with 1.5gb Ram, and leopard. With Snow leopard, am I going to see performance boosts I was expecting with the MBP? Is it that Leopard just isn't fine tuned enough for the new MBP's? Or, is Snow leopard more geared toward the brand new MBP's (Late 2008)??