🚀 go-pugleaf

Roderick Smith (rsmith@psych.colorado.edu) wrote:
: kkrieser@ionet.net wrote:
: : From what I have read, you should avoid motherboards that have both VLB 
: : and PCI.  Tests have shown them to be slower than either VLB motherboards
: : or PCI motherboards.  Also, at work we bought a bunch of computers,
: : and they came with these combination motherboards.  We had several problems
: : and the manufacturer ended up replacing ALL the motherboards with PCI/ISA 
: : versions.

: Although frequently true, this is an overgeneralization.  The problem, as 
: I understand it, lies in the dual-bus implementation of some early 
: dual-bus boards, which set it up so that the VL bus "talked" directly to 
: the CPU, as VLB is supposed to do, but the PCI bus was set up as a 
: "bridge" off of the VL bus, which slowed down PCI bus performance 
: something awful.  The design used on Asus' dual-bus boards, OTOH, sets up 
: the PCI bus to "talk" to the CPU the way it's supposed to, and then sets 
: up the VLB as a bridge from the PCI bus.  Apparently this results in less 
: of a hit on the VLB than the first design does for the PCI bus, and the 
: overall performance is much better.

: OTOH, there's been some discussion lately in the Asus newsgroups about 
: poor PCI bus performance with the PVI-SP3 when the VL bus slot is in use, 
: so maybe this particular Asus board doesn't do it right.  :-(  In that 
: case, the Asus PVI-AP4 would still be the only choice of which I know in 
: the dual-bus (VLB/PCI) category.

: --
: 					--Rod Smith
: 					  RSMITH@PSYCH.COLORADO.EDU


You certainly can be sure of the Asus PVI-AP4, because that's what I use 
on my Warp PC.  Works fine, great, actually.  Gets my full recommendation.


Chris
crobato@kuentos.guam.net