AMD Athlon II X4 635 2 9GHz Quad Core Processor verses intel corei3

The X4 gives similar performance to i3 dual core cpus at same clock speeds....

http://www.tomshardware.com/charts/desktop-cpu-charts-2...

naturally, the quad core might have the advantage in multitasking (*more than 2 cpu intensive apps) or in some multithreaded apps....

Depends entirely on what you are doing. Both are superior at different tasks.

Well, if you've already bought it, what's the point?

http://www.anandtech.com/bench/Product/122?vs=143&i=2.3...

Core i3 vs Athlon II X4