as Djembe said about specific notebooks, i don't think that necessarily exists, as a lot of laptops have so many different configurations that you can't just pick a particular model and then benchmark it, but systems with similar components will probably perform about the same, which is where those graphics card benchmarks would give you a general idea.http://www23.tomshardware.com/cpu_mobile.html
there are a very limited amount of processor comparisons there, as another comparison in performance, cpu-wise, instead of graphics-wise. also, to me, most of those results seem pretty obvious to me, at least the intel ones. basically, the higher the clock speed on the intels, the better performance you get, and then the crossover is that the 2.16ghz core duo is about the same, slightly lower though, as the 2ghz core 2 duo. but with all the new mobile processors around, it's harder to make as much of a comparison, i woudl think.