From: darin@infograph.com (Darin Wayrynen) Subject: Re: Any dual monitor support yet? Date: Thu, 11 Feb 1993 20:45:49 GMT
In article <1993Jan31.095631.3291@cheshire.oxy.edu> rafetmad@cheshire.oxy.edu (David Giller) writes:
>BTW: even so, this will have drawbacks. When you stick a Herc card in
>with a VGA card, the VGA card's speed cuts in HALF. This has
>something to do with the way video cards use the bus (I'm not clear on
>this). This happens if you have an 8-bit herc card and a 16-bit VGA
>card. The VGA effectively turns into an 8-bit card.
>
It may be true that a 16 bit VGA card effectively turns into an 8-bit
card when used in combination with a Herc card, the nice thing is that
the user will not visually notice a 50% slow down. The possible
throughput is cut in half, but rarely is the full throughput used as
it is. The cpu when outputing to a graphics screen needs to do many
calcualtions between each screen operation. This effectively makes
the slowdown less visible to the user...
It's sort of like taking a Ferrari and cutting it's potential top
speed in half. Chances are, you wouldn't notice that the speed had
been cut as most people would rarely push the car past half it's
original top speed anyways.
--
==========================================================================
Darin Wayrynen UUCP: uunet!uupsi4!infogrf!darin
Paragon Consulting Group INTERNET: darin@infograph.com
PHONE: 602-437-9566