It's tough to find direct comparison benchmarks between the E7600 and the Core i5 750. The E7600 is a ~$130 mainstream dual core. $190 gets you the Core i5 750 which is the value quad core champion right now.
The best I can do right now is an overall benchmark.
http://www.behardware.com/news/lire/20-10-2009/#10495
With the index being the Q6600 at 100 points, the E7600 comes in at 80.3. The Core i5 750 is at 142.5. You're looking at only $50 in the price difference between the processors though. That's chump change.
thats a nice chart and E7600 desktop CPU not bad at all for average user (though i would like apple put a quad in there