I'm itching to replace my 2006 Dell Precision M65 (15", 2.0 GHz CoreDuo) with an MBP 17". But looking at Geekbench numbers and such, there hasn't really been any massive developments on the portable side. Sure, my 2006 machine scores a lowly 2400 in Geekbench (Mini/MBA territory), and the MBP 2.66 I would buy today scores around 3400-3500 which is certainly faster. But it's not sock-knocking faster, nothing like the awesome jump from Penryn to Nehalem on the desktop side of things. Based on what's known thus far about Arrandale, what can we reasonably expect in Geekbench ballpark figures? A negligible 5% boost or a total knockout?