I7 3520M vs. i7 2670QM help

[JmanXp]

I see that the 3520 has 2.9 ghz vs the 2670 that has 2.2 but according to http://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i7-3520M+%40+2.90GHz The 2670 is better. Why is that?

 

[pauls3743]

The "Q" in the suffix is the dead giveaway, it stands for Quad core. The standard laptop i5 and i7 are dual core.