Rackable builds the systems to order and doesn't publish list prices, but Atashie said the servers start at less than $500.
Two of the servers are 1U, half-depth rack servers, the other two use Rackable's CloudRack design, which does away with fans and the top of the server box to keep costs down and leave room for more disks and processors.
"We put in an internal switch to do a lot of the inter-node cabling, so there are only three cables coming out of each tray," Atashie said. "Otherwise you'd need a cable for each node and the amount of wiring would be unmanageable."
The servers available Wednesday come in the following configurations:
TR1000-AT1: Up to six servers, each with a dual-core Athlon CPU; two DIMM slots and one 2.5-inch hard drive
TR1000-ATP1: Up to three servers, each with a dual-core Athlon, tri-core Phenom or quad-core Phenom CPU; four DIMM slots and a 2.5-inch hard drive
C1000-AT1: dual-core Athlon CPU; two DIMM slots and one 3.5-inch internal hard drive
C1002-AT1: dual-core Athlon CPU; two DIMM slots and two 3.5-inch or four 2.5-inch hot-swappable hard drives