Quoting from Real World Technologies:
At the MicroProcessor Forum, Dr. Brad McCredie of IBM continued to tease out particulars regarding the POWER6. The presentation discussed a lot of general microarchitecture features, but did not reveal many specific details; a full revelation of the microarchitecture will likely have to wait till ISSCC, next February. However, from the details that were revealed, it is clear that the POWER6 inherited many characteristics from its predecessors, yet made substantial improvements in others.
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On the management side, IBM is also improving their virtualization capabilities in the POWER6. In particular products, a single processor may be able to host 2-300 virtual instances, although theoretically up to 1024 VMs are possible. Memory partitioning and migration have been added as well, which reduces system down time for repairs…
Read the whole article at source.