The
T2450 is based on
Mobile architecture while the
i5-520M is based on
Westmere.
Using the multithread performance as a reference, the T2450 gets a score of
11.4 k points while the i5-520M gets
26.3 k points.
Summarizing, the
i5-520M is
2.3 times faster than the
T2450. To get a proper comparison between both models, take a look to the data shown below.