Mail Archives: opendos/1997/09/22/19:28:51
nuqneH,
> Date: Mon, 22 Sep 1997 16:18:48 -0600 (MDT)
> From: Roger Ivie <IVIE AT cc DOT usu DOT edu>
> Subject: Re: ClosedDos???
> To: OPENDOS AT delorie DOT com
[dd]
> >That is not true (at least). Modern MicroVAXen have performance not less
> >than Alpha systems of that size.
>
> FWIW, it's been my experience that a VAX can keep pace with an Alpha that
> is running at twice the clock rate. The fundamental difficulty is that it
> didn't take long for Alphas to start running more than twice the clock
> rate of the fastest VAXen; that is the fundamental magic of RISC.
>
> The fastest VAXen run at 166MHz or thereabout. The fastest Alphas run
> 600 MHz. Much as I love my VAXen, there's no way a top-of-the-line VAX
> can keep up with a top-of-the-line Alpha.
There are some other things:
The machine is not bare number-crunching device. If you compare TPS numbers
for those things it is not so bad for VAXen.
VAX applications are not so memory hungry: actually you need *1.5..*2 RAM
to run the same software on Alpha.
VAX programs could be manually optimized: remember that Macro-11 _is_ a
valid programming language - and it is hard to imagine someone coding big
projects in Alpha assembler. (back to C vs ASM discussion on this list)
---
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