[q] q840av video Q

2005-09-04 Thread Tim Alethea Larson

Hi list,

I have a couple Nubus video cards, and was wondering if either of them 
gives any advantage over the built-in video of my Q840AV.  I got them 
both secondhand and don't know anything about either except what is 
printed on the card.


1: 8 card with RADIUS Inc 1992 PrecisionColor 24Xp printed on it. 
There is also a sticker that repeats that info, and adds V1.3.2 256K 
U1200 -0047-03-A.


2: 6 card with Accelerated 8-Bit Graphics I/F (C) RADIUS Inc. 1993 
printed on it.  Small sticker says 632-0188-02 Rev. A4.


Both have an identical chip that says (c)1992 Radius 297-0582 4LO8F1044. 
 #1 has another (c)1991 Radius chip 297-0587, and #2 has a (c)1993 
Radius chip 297-0501-01.  Both have some chips that I assume are VRAM, 
but no indicator how much.


I've got one slot left in my Quadra so I want to pick the better of the 
two, if either is better than the onboard video.  Thanks for any info!


Tim
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Tim  Alethea
christtrek.org

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[q] q840av video Q

2005-09-04 Thread Jeff Walther

Date: Sun, 04 Sep 2005 13:45:24 -0500
From: Tim  Alethea Larson [EMAIL PROTECTED]
Subject: [q] q840av video Q

Hi list,

I have a couple Nubus video cards, and was wondering if either of them
gives any advantage over the built-in video of my Q840AV.  I got them
both secondhand and don't know anything about either except what is
printed on the card.

1: 8 card with RADIUS Inc 1992 PrecisionColor 24Xp printed on it.
There is also a sticker that repeats that info, and adds V1.3.2 256K
U1200 -0047-03-A.

2: 6 card with Accelerated 8-Bit Graphics I/F (C) RADIUS Inc. 1993
printed on it.  Small sticker says 632-0188-02 Rev. A4.

Both have an identical chip that says (c)1992 Radius 297-0582 4LO8F1044.
  #1 has another (c)1991 Radius chip 297-0587, and #2 has a (c)1993
Radius chip 297-0501-01.  Both have some chips that I assume are VRAM,
but no indicator how much.

I've got one slot left in my Quadra so I want to pick the better of the
two, if either is better than the onboard video.  Thanks for any info!


My guess is that the built-in is going to be better than any NuBus 
card you can install, but why don't you get a copy of MacBench and 
run the Graphics test suites and compare?


The two cards you have there are fair cards, but not among the 
fastest that were released before NuBus was abandoned.


The fastest video cards would be a Radius Thunder IV GX (1152, 1360 
or 1600), Radius Thunder 24/GT or the Villagetronics MacPicasso 340 
(not the 320).


Those might give the Q840AV's internal video a run for its money but 
I'm not sure.   And it depends on what type of applications you're 
using, of course.


The Thunder IV GX series bears a daughter card with four DSP 
processors to speed Photoshop operations.   So if you're running an 
OS earlier than 7.6 (PhotoEngine extension doesn't work on 7.6 and 
later) and you're using Photoshop, then a Thunder IV GX might be your 
best bet.


On the other hand if you want the fastest frame rates you can get in 
something like Marathon, then you're probably best off with the 
built-in video.


Absent someone who has already done the testing, the only way to find 
out is to run some benchmarks yourself.  I've run a bunch on the 
Power 120 machine (8100 clone) but I have not tested a Q840AV.


Jeff Walther

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Re: [q] q840av video Q

2005-09-04 Thread John Niven


On Sep 4, 2005, at 11:45 AM, Tim  Alethea Larson wrote:
2: 6 card with Accelerated 8-Bit Graphics I/F (C) RADIUS Inc. 1993  
printed on it.  Small sticker says 632-0188-02 Rev. A4.



I have never owned a 840av, but I own a number of this card (a  
PrecisionColor 8-Xj), which I like, but probably not for the reason  
most think.


It only does 256 colors, but it does do screen sizes up to 1152x870.  
The reason I like it is, it is accelerated and the s/w works for OS 6  
:-)


http://www.macdrivermuseum.com/video/knighttech/DiskImages/Radius/ 
RadiusWare3.2.5.smi.hqx


You will not be impressed without the s/w, but it's a cheap card that  
works very well in a Mac IIci running OS 6.


Other cards from that period seem to offer more colors but on smaller  
screens. Personally I like to run as big a screen as possible, the  
restricted range of colors not generally being a problem with early s/w  
and games, and generally being faster anyway. In the case of the Mac  
IIci using a video card rather than built in video gives you back some  
ram as a bonus.


It probably won't outperform the built in video of a 840av, but let me  
know, offline, if you decide not to use it as I'm sure I'll find a use  
for it.


Cheers,
   John


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