Seemed like a pretty cheap way to go AMD SLI.
Non-SLI options as well.
http://promotions.newegg.com/AMD/PhenomX4Combo/index.html?nm_mc=EMC-IGNEFL090208&cm_mmc=EMC-IGNEFL090208-_-MECH-_-EB5-_-AMDbanner
http://www.geeks.com/pix/2008/tyan.html
Saw this in my email. Seems like a good way to put together a folding farm. Grab a few Opteron 270s from newegg, a few gig of ECC ram + HD and go nuts.