I think you will see the 533mhz fsb on the new Pentium M's helping to increase performance in high bandwidth programs. The Pentium M has been shown to kick major arse against ALL desktop CPUs, bar none, so a bus speed increase will just let kick harder. Remember- the bus speed increase of 133mhz (effectively) is going to yield a LOT more performance than just increasing the clock speed. DDR2 and PCI-E are going to provide desktop performance. I expect my tentative 2ghz+, 1gb DDR RAM, GeForce 6800 Go/X800, to beat my current desktop, which is a 2.2ghz Athlon 2800+ with 176mhz FSB, GeForce 6800 Non Ultra, 1gb RAM. The video card may be slightly weaker on my laptop, but the pentium M will easily beat the 2.2ghz Athlon XP of mine.