With a Super Pi score of course:
http://www.techpowerup.com/91389/Pho...Processor.html
In Super Pi 1M the 2.4ghz Core i5 dual core with 4mb cache takes around 18 seconds whereas a 2.4ghz E6600 dual core with 4mb cache would take around 20 to 21 seconds. It would be interesting to see some other tests though.