I use a similar strategy as TRobbins; used rackmount blades seem to run forever and cost about two cents on the dollar of what they cost new.

Used Dell C1100 blade, with dual X5650 Xeon processors (24 total render threads @ 2.66GHz) and 48GB RAM, $650 US, free shipping. I've measured the actual power consumption while they were rendering at 100% CPU capacity and fans spinning fast; 275W. That's well less than half of what one of my dual-Xeon workstations will draw when rendering.

If you only get one or two blades, you can just set them on a shelf or milk crate; once I got more than four, I bought a rack for them. A rack is a convenience, not a necessity.

I installed one small HD, and got an OEM WIN7Pro license (about $72 then, but getting pricier now), and each blade emulates a desktop. Another option would be to run Linux on the blades and send a boot file to each blade from your controlling workstation via your network (PiXiE boot). A third option is to run maybe three blades as one virtual machine using VMware.

If you go the server blade route, then spend the remainder of your budget for a GPU for the workstation, like a 6GB GTX980Ti, $660 plus $7shipping. Remember that for Superfly, only CUDA-capable cards can serve for GPU acceleration.

Now, if you don't judge your current desktop to be competent, then you might want to browse eBay for the large-scale refurb dealers who sell used professional workstations. Use the following search terms to narrow in on machines with dual HyperThreaded hex-core Xeons:

2x X5650, 2x X5660, 2x X5670, 2x X5680, 2x X5690. In Xeon nomenclature, X is high performance, L is a balance between performance and economy, and E is the low performance energy saver.

You might also de-clutter the search results by adding the terms T7500 (Dell's full tower chassis) or z800 (HP's full tower chassis). The mid-tower chassis are T5500 and z600, but these will have fewer RAM slots and fewer expansion card slots. I have a z600 (named Urania); she has dual X5660 Xeons (24 render threads @2.8GHz) and 48GB RAM. She cost $1,260 US, to my mind that's a good bang for the buck.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

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