Re: Getting a new IBM i - need advice

["Mark S. Waterbury" <mark.s.waterbury@xxxxxxx>]

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)...