Re: Getting a new IBM i - need advice

Nathan:

The concept called "CPW" was not introduced until much later in the life-cycle of the AS/400. I believe CPW was not introduced until around the time of V3R6 and the first of the RISC-based AS/400 models, or around 1994 or 1995.

For the first several releases of the hardware and software, IBM published something called "Relative Performance Ratio" or RPR to rate the different AS/400 models. The original B10 was rated at 1.0 RPR, and all other models were rated against that "benchmark", so you could get some idea of how much faster a B60 was, versus a B10. For example. all of the Bxx, Cxx, Dxx, Exx and Fxx models had RPR ratings. Here are a few that I just happen to have "handy" from an old pocket guide (from 1993):

F02 1.9 F04 2.5 F06 3.3 F10 3.4 F20 4.2 F25 4.5 100 3.0 135 5.7 140 11.5 F35 4.8 F45 6.0 F50 10.2
F60 16.7 F70 21 F80 36.5 F90 47.1 F95 54.7

When CPW was introduced, for comparison with older models, you could use the "rule of thumb" of multiplying the RPR by 2 to get an approximation of CPW. (CPW = RPR x 2)

Cheers,

Mark S. Waterbury

> Nathan Andelin wrote:

From: Lukas Beeler
CPW, in my opinion, are an almost useless marketing number.

I find CPW to be quite significant in that it offers historical perspective - going back to about 1989 when the first "B" models were built. It seems that these days a lot of benchmarks are redefined after 3-5 years, so you lose historical continuity.
...(snip)...