890 cpw per cpu

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The cpw of the new 890 looks to be about 1170 per cpu.  ( 37,400 / 32 ).
The cpw per processor of the other iSeries models is about 1070  ( cpw of
the 270/2432 ).  The 890 runs on a 1.3 GHz Power4 processor. The processor
of the 270 runs at less than half that speed ?

Why is the cpw per cpu of the new 890 not higher ?

Does the power4 processor of the 890 actually run at 1.3 GHz?

Steve Richter


>i890 REGATTA SERVER
>The 32-way i890 nearly doubles the processing power of the i840 to
>37,400 CPW (see Figure 1 in the online version of this article). The
>1.3 GHz Power4 chips cram 174 million transistors onto two
>processors and enable the i890 to crank out transactions so fast
>that it consumes energy at a breakneck pace, requiring 3-phase power
>and dissipating up to 25,000 kBTUs of heat per hour.

>The i890 triples the I/O capacity of last year's i840, supporting up
>to 72 TB of disk, 2,047 disk arms, and 256 GB memory. The machine
>also connects up to 32 Integrated xSeries Adapters (IXAs) and offers
>up to 534 MB of L2/L3 cache.


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