And they're charging (as far as I can tell from finding the same/equivalent parts on newegg for the lowest end $2,500 model) 4-5x the actual hardware cost.
CPU: $260, 3x2GB ECC DDR3: $60, 1TB 7200 RPM HDD: $120, Radeon HD 5770: $120
CPU: $260, 3x2GB ECC DDR3: $60, 1TB 7200 RPM HDD: $120, Radeon HD 5770: $120
six cores nehalem start around 1000$ according to wikipedia
http://en.wikipedia.org/wiki/Nehalem_(microarchitecture)#Ser...
While probably far from "best bang for the buck", the 2 2.4GHz is probably closer to the real cost than the other models.
Best 6 cores for the buck seems to be this baby right now, although it doesn't seem to support multiple processors as it is not a Xeon DP. http://ark.intel.com/products/63697