Google up Tomshardware CPU CHARTS 2011 (or 2010) and put the CPUs you want up for comparison.
However with current Intel CPUs including hyperthreading with each core, you may be discounting them a little too soon.
keeping track of amd's family is a moving question since they're always introducing something to compete in the low-mid range. if you're not interested in high-end performance, just go by price since they're very competitive in their price range. personally, i'd go with a phenom x4 to get the extra cores at only a little more cost and 90% of most users, they're more than sufficent.
jzou, I don't know which AMD and Intel processors you considered, but figuring out what CPU to buy is probably the single most diffficult decision when you're building a PC. Used to be, you could just look at the processor family (386, 486, etc.) and speed, then look for a DX or SX suffix, and you had all the information you needed to compare parts. These days, you need a good, up-to-date reference in order to know just how one processor compares to another.
those are very important questions that unfortunately I didn't have a lot of time to research. So I took a short cut instead. I asked three different computer stores to recommend a setup for my given budget and went with the one that I liked. Then I searched for the cheapest seller of each parts.
One of the best French door fridges we've tested
A good-looking fridge with useful features like an auto-filling water pitcher and a temperature-adjustable "FlexZone" drawer. It was a near-flawless performer in our cooling tests.