Core i3-550 vs Pentium G645

The i3-550 is based on Westmere architecture while the G645 is based on Sandy Bridge.

Using the multithread performance as a reference, the i3-550 gets a score of 38.8 k points while the G645 gets 35.4 k points.

Summarizing, the i3-550 is 1.1 times faster than the G645 . To get a proper comparison between both models, take a look to the data shown below.