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In this paper, we describe the application of the blade packaging concept to the IBM zSeries eServer z990, code-named T-Rex. The advantages of such packaging architecture are highlighted and the challenges for the system performance are identified. The physical and electrical attributes of the five types of buses required to support a processing operating frequency of 1.25 GHz in a symmetric multiprocessing...
Coordination issues for design and operation, not clearly and systematically addressed so far, are presented in this paper for distributed power architecture using intermediate bus architecture. Fundamental coordination conditions are presented in accordance with (a) power, voltage, and current, (b) switching frequencies, (c) input/output impedance decoupling and (d) thermal derating
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