Hardware Logic reviews the Intel E6850 Dual Core Processor. Compare prices here.

Quote from the review: "A couple weeks back, I went on a bit of a rant regarding my experience with Intel's E6850 processor. While most reviews and several forum posts showed incredible overclocking results, my processor was one of several, as it turns out, which had problems with a low FSB wall when dropping the CPU's multiplier.
If it were just for personal use, the FSB issue would be a non-issue, but as the heart of my current test bench, the inability to use the CPU multiplier to stress other system components made the FSB problem a real pain in the ass. Not content with the results I saw, I purchased another E6850 to see if the issue was a fluke, or part of a bigger problem."
Read the full review on Hardware Logic.