from the article from maccentral:
Apple Computer Inc. on Tuesday introduced a new Xserve configuration specifically designed for customers seeking clustering capabilities. Available for US$2799, the new Xserve configuration keeps the high-end power, but loses equipment not necessary for the clustering marketplace.
The Cluster Node Xserve comes with dual 1.33GHz PowerPC G4 processors; 2MB L3 cache per processor; 256MB DDR333 SDRAM; 60GB ATA/133 ADM; Mac OS X Server (10 client); and Gigabit Ethernet. This configuration does away with the video card and the expansion hard drive bays found in the normal Xserve, making this a completely headless machine.
"This configuration is tailored to bring the Xserve form factor with dual processing power in at a lower price point," Doug Brooks, Xserve Product Manager, told MacCentral. "This machine is really streamlined for the price/performance in this market."
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Apple also sees an opportunity to expand its reach with the introduction of the Cluster Node machine in a market where many people use Linux.
"We think this configuration will accelerate adoption and allow us to be more competitive with some of the Linux machines," said Brooks.