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From: prc@erbe.se (Robert Claeson)
Newsgroups: comp.windows.x
Subject: Re: X terminal comparison
Message-ID: <1990Nov13.190751.29430@erbe.se>
Date: 13 Nov 90 19:07:51 GMT
References: <9011121342.AA13630@sunbim.be>
Organization: ERBE DATA AB, Jakobsberg, Sweden
Lines: 36

In a recent article db@sunbim.be (Danny Backx) writes:

>1. Hank compares the NCD models 16 and 17c to Visual models X19turbo and X19+.
>	Nothing is wrong with this, of course, but what he does is compare
>	Visual's high-end black&white X terminals to NCD's low end b&w (NCD16)
>	terminal. This creates a false impression about NCD's b&w terminals.
>	Note that the left-out NCD19 has the same screen dimensions as Visual's
>	X19+ or X19turbo. Even their weights are of the same order.
>
>	An objective benchmark would also list the high-end b&w NCD's (NCD19)
>	as well as the low-end Visual (X15).

Ahem. The X-19 Plus from Visual Technology *is* a low-end terminal, to be
compared with NCD's NCD19b. Visual's two high-end terminals are X-15 Turbo
and X-19 Turbo, and the low-end terminals are X-15 and X-19 Plus (there's
also an X-19, which has been superceeded by the X-19 Plus. The old X-19 has
the same screen resolution as the NCD19b). Visual also has a low-low end
terminal named X-14/ES, while NCD's sub-low end terminal is named NCD15 or
possibly NCD15b (the correct name escapes me now). So there.

>2. I don't know about the software versions that are used on the non-NCD
>	equipment. On the NCD's, an old version (2.1) of the X server software
>	was used. You can see this in the 2001 server version number.
>
>	The current 2.2 version improves overall performance with 15..30%,
>	while the future 2.3 version will go even further.

To be fair, the Visual terminals were also tested with an old version of
the software. The current release, 3.0, is based on X11R4, and improves
the performance twenty-fold in some cases.

-- 
Robert Claeson                  |Reasonable mailers: rclaeson@erbe.se
ERBE DATA AB                    |      Dumb mailers: rclaeson%erbe.se@sunet.se
Jakobsberg, Sweden              |  Perverse mailers: rclaeson%erbe.se@encore.com
Any opinions expressed herein definitely belongs to me and not to my employer.