If it is part of your job to spec a new workstation down at the office, might want to look over this thorough comparison at the Tech Report.  The most hardcore enthusiasts among you might actually be interested in picking one of these up for home.  Mmm, Numa 🙂 
Quote: “IT TOOK what seemed like forever for AMD to release its Opteron processor for servers and workstations. However, while the server crowd sunk its teeth into AMD’s new 64-bit platform right away, workstation users and SMP enthusiasts waited months for the first dual Opteron boards with AGP slots to trickle onto the market. Despite all the hype over AMD64, only a handful of mobo manufacturers has jumped into the dual Opteron workstation game since the chip’s launch. Don’t let the limited number of boards fool you, though. We’ve rounded up a trio of dual Opteron boards, and there’s quite a bit of variety to be had. Read on to find out which board best suits your workstation needs or enthusiast desires.”

Here are some more Motherboard reviews from around the web:

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