Below is the list of popular notebook processors and their rating in CPU Benchmarks.
intel Pentium Dual Core T4300 – 1454
Intel Pentium Dual Core T4400 – 1514
Intel core 2 duo T6600 – 1578
Intel Core 2 Duo P7450 – 1576
Intel Core 2 Duo P8700 – 1803
intel core 2 duo t9550 – 1900
Intel Core 2 Duo p8800 – 1914
Intel Core 2 Duo t9600 – 2001
Intel Core 2 Duo T9800 – 2198
Intel Core 2 Duo T9900 – 2329
With the increase in the numbers you can notice the performance numbers not moving significantly up, also for the price vs performance ration T6600 is still the best bet. Also one should keep in mind that we have entered the post Core 2 Duo era, Intel lists all the core 2 Duo processors as retired versions but still 99% of the laptops are sold with either one of the above processors.
So whats after the core 2 Duo ? Core i3 , i5 and i7 and some high end models of dell studio xps offer the Core i7 processors. The new processors definitely give a huge performance boost compared to the old C2D processors. Below is the two new kids on the block.
Intel Core i7-720QM Quad Core 1.6G (2.8GHz Turbo Mode, 6MB Cache)
Intel Core i7-820QM Quad Core 1.73G (3.06GHz Turbo Mode, 8MB Cache)
And you can clearly see the performance numbers skyrocketing with these i7 processors.