[simpits-tech] Monitor question

[Ido Dekkers]

If you can prolong the Christmas present till Jan/Feb there should be an
updated 9700 , the most important feature will be 256 MB of memory.
and BTW i asked in 2001 one of the leading 3D card manufacturer ( don't
remember how - but i mean pro 3D the ones that cost 1000$ and more) why
their card are PCI and they said they didn't fine a reason to move to AGP,
and usually they use the PCI for SCSI also in these workstations.

Ido


                                                                           
             "Alan D.                                                      
             Mazurka"                                                      
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             12/11/2002                                                    
             05:36 PM                                                      
                                                                           
                                                                           
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Hi, Ido

thanks for the links, i will devour them.

for interested readers, in an attempt to answer my own question(s) i offer
the following AGP/PCI articles from Tom's Hardware:

a 1977 article describing the intent of AGP (and some comparisons to PCI)
http://www17.tomshardware.com/graphic/19970805/agp-01.html

a 2000 article describing the impact of AGP speed (same one Ido mentions)
http://www17.tomshardware.com/mainboard/20000214/index.html

bottom line: AGP is a dedicated bus: solely for the graphics processor. if
you get onto PCI, you get in line with any and all other devices which also
want to use the bus. this has unpredictable real-life considerations from
system to system, since everyone has a different set of cards plugged into
their computers, PLUS varying types of DMA controllers, memory speeds, etc.

there are other, more technical issues (plus some goodies used by various
graphics manufacturers) to get extra duty over AGP.

real-life use will effect PCI performance in a manner other than can be
indicated by raw bandwith numbers alone. the problem is made a bit more
apparent when flightsimmers overcome the "speed" of the original product
with their custom designed 2-gazillion poly airplane landing at the
9-gazillion poly airport.

it gets MUCH worse when you hook 100 2-gazillion poly freight cars (with
their accompanying 16 MEG textures) together in train-sim, and expect it to
run like out-of-the-box. these are situations where people are creating
huge throughput not necessarily envisioned by the program's designers, but
DO take advantage of AGPs capabilities.

by the way, that Radeon 9700 card sounds unbeeeeelieeeeeevable.

 - adm -

At 04:36 PM 12/11/02 +0200, you wrote:

      There is a premium - the AGP is faster - 2GB with AGP x8 as opposed
      to PCI
      with 133MHz , and it has it's own bus - it's not on the PCI bus,
      read this article for the exact difference
      http://www.tomshardware.com/mainboard/20000214/index.html
      But ( big one ) for the high end cards, the memory throughput is not
      even
      close to what the GPU needs so you can only rely on the internal
      memory,
      in the low end cards you will see an improvement.
      read the conclusion here :
      http://www.tomshardware.com/graphic/200210041/nv18_nv28-08.html#new_cards_with_nvidia_geforce4_ti42008x_and_mx4408x

      if you read the entire article do note that the 440 new version has a
      higher clock not just AGP x8.

      Ido



Alan D. Mazurka                    Webspace Design & Implementation
adm.design@verizon.net