Check out Flickerdown.com which is owned by Mr. Dave Graham.  He has a crap load of Opterons.  I just saw some pictures of his stock and let me say my mouth dropped.  He’s sitting on a gold mine and his prices are VERY reasonable.  So if you’re looking for an Opteron, 144, 146, 148 and even the dual core Opties, check out his website, Flickerdown.com.  I promise you, you will not be disappointed.