"Rick" <me.RemoveThis@privacy.net> wrote in message
news:bilcqn$atu37$1@ID-82690.news.uni-berlin.de...
> "Arthur Hagen" <art.RemoveThis@broomstick.com> wrote in message
news:d9b121-p6d.ln1@kether.broomstick.com...
> > And the PCI bandwidth isn't the bottleneck except for for moving
textures.
> > With a 128MB graphics card, most textures can be preloaded in the video
> > memory on the card, making the slowdown much smaller than you'd think.
>
> The benchmarks I've seen beg to differ. 3D gaming (especially with
> today's current games) on the PCI bus is painful.
Please show me a benchmark comparison between two systems where the only
difference is that one is a PCI card and the other is an otherwise identical
AGP card. That shows enough of a difference that it's "painful".
In a few cases, like with the Voodoo 5 5500, the PCI card was slightly
*faster* than the AGP card, due to less overhead. Most of the time, though,
an AGP card will be *slightly* faster, and quite a bit faster only for
transferring textures or other large chunks of data. For most games,
though, you don't transfer a large amount of data to the card except at
level load time (or "zoning"), but only send short instructions to the
graphics card, which are then executed just as fast on a PCI card as an AGP
card. And even when you do transfer large amounts of data to the card, the
data often comes from the hard drive, which makes the PCI vs AGP transfer
speed almost irrelevant, as it's not going to be the limiting factor.
--
*Art<!-- ~MESSAGE_AFTER~ -->
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