So far only the bobcat laptop cpu has been released, no word on the release date for bulldozer, and if you can fit them then yeah id go for a raid 0+1, just make sure that the drives you pick are raid friendly since some do not do raid very well and will constantly desync and reck the whole raid setup.
Here is a softpedia link for a performance preview of bulldozer: news.softpedia.com/news/AMD-Says-Bulldozer-is-50-Faster-Than-Core-i7-CPUs-177958.shtml
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