The prototype, called the Cell Processor Based Blade Server, measured approximately 23 x 43 cm. Each board featured two Cell processors, two 512 Mb XDR DRAM chips and two South Bridge LSIs. The Cell processors were demonstrated running at 2.4-2.8 GHz. "We are driving the Cell processors at higher rates in the laboratory," said the engineer. "If operated at 3 GHz, Cell's theoretical performance reaches about 200 GFLOPS, which works out to about 400 GFLOPS per board," he added. IBM plans to release a rack product capable of storing seven of these boards.
Funny though the Cell in the PS3 is rated @ 3.2 GHz but has 1 less SPE than the above server but its rated performance is 2TFLOPS <2*10^12Flops> but the performance of the IBM server @ 3.0 Ghz <but the full 8 SPE cell> is 200GFLOPS <200*10^9> (.2 TFLOPS)
The OS used in this server was linux 2.6.11 -- maybe the incomplete linux support is what as caused the deficit in FLOPS <or either Sony or IBM are tellin fibs / or sony got the math wrong>
http://techon.nikkeibp.co.jp/english/NEWS_EN/20050525/105050/