If you mean that you had previously searched for the Xeon processor but wanted workstations, then yes, search using the two models of workstations, as in my previous post.

If you want bare processors, just search X5690. Gobs of them, looking for a good home.

There ^are^ other workstation models which use these processors -Cameron is a Boxx 8520- but these would rarely be seen for sale.

The midtower chassis Dell T5500 and Hewlett-Packard z600 are common (Urania is a z600), but be aware that these will generally be limited to "only" 48GB and one or possibly two video card slots.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5