Tom's Hardware Guide has posted a review over here and GamePC published theirs over here. Here's a snip:
These new "Woodcrest" Xeon processors will be sold under the Xeon 5100-series name, and will likely go on sale before the Core 2 Duo for the desktop will. Thus, if you want to get your hands on this technology first, read-on. In addition, seeing multiple "Woodcrest" processors in action also gives us a very vague preview-of-sorts to what Intel has in store for 2007 as well, as they will be merging multiple Core 2 Duo-like cores into a single quad-core processor (codenamed : Clovertown). Multiple "Woodcrest" Xeon processors will provide us with quad-core systems today, albeit the cores are split up over multiple processors. Without further adieu, let's see what Intel's new architecture is capable of.