Following the lead of many other vendors, Dell has released a new MicroServer Rack system called the C5125. This server is unique in that it eschews the usual Opteron trappings for a lower cost Phenom socket box. By using a MicroServer, a 3U rack can be fitted with up to 12 of these units.
Each microserver is capable of supporting Athlon II and Phenom II processors for up to 48 processors per rack along with 4 DIMMs per server for up to 192GB DDR3 RAM. Because it is a server it does employ the SR5650\SP5100 chipset from the C32 and G34 series sockets.
As per Dell's website
Each independent hot-plug server node in the PowerEdge C5125 is mounted on a small sled that slides vertically into the 3U PowerEdge C5000 chassis. 12 such nodes together provide four times the density of three traditional single-node 1U rack servers. The compact system is ideal for:
These servers sit somewhere between the recently announced Atom-level boxes and some of the less-dense lower power Opteron or Xeon boxes getting hawked for the cloud. They would be ideal for small businesses to introduce secure domains and Email servers. Pricing is to be competitive with other low end servers but the modular nature of the system allows businesses to build out as the go with one system.
Check out Dell's Product Page for more info and to find out how to purchase.