g400 and high fsb?

[Maiden]

I have a p3@600 fsb 133 agp 1/3 89 with a soyo + III, how does the g400 handle this high agp speed?

[WayneHu]

Intel 440BX chipset only provides AGP:CPU = 1:1 or 2:3 ...

The AGP spec is 66 MHz. So I think most AGP adapter won't be able to handle AGP bus 89 MHz with AGP 2x mode... It is diffcult for AGP device to keep with such timing...

If you want have AGP:CPU ratio 1:2, you should use VIA's latest 133 MHz chipset. However, its performance at 133 MHz is even worse than 440BX at 100 MHz... In other words, 440BX chipset is a very good chipset. It is fast, stable, bug-free...

[Nitromind]

My G400DH (165/198) runs fine with 100Mhz AGP-Bus and Celeron300A@450 and Abit BX6-2...
FSB=100Mhz
AGP-Divider=1:1
AGP-Bus=100Mhz

[Maiden]

Sorry, yes the agp divider is 2/3 for the 133 fsb, I've had a voodoo 3000 and a tnt2 ultra (diamond), and a permedia2 (diamond0 and all worked fine in a 89 agp speed, just wanted to now if the g400 could handle that before I went and got one

[WayneHu]

I am not sure...

If G400 is operated with AGP 1x. The answer is definite. G200/G400 series are the the only ones which can work at 112 ~ 124 MHz AGP bus(it depends on quality)... And of course, with 1x mode... I remember other chipsets can't even handle 90 MHz with AGP 1x mode.

AGP 2x mode at 89 MHz? unless you got a very good G400 board, I think it is impossible... Mine only works at 82 MHz with AGP 2x mode.

My condition is Celeron 300P@558(2.0v, 124 MHz FSB) with P3B-F, and AGP 1x is totally stable(Of course!). But AGP 2x is not. I have to tune some parameters in MB's BIOS to make my G400's 3D functions stable at 82 MHz with 2x mode..

[Ali]

Ive been running at 103Mhz FSB with AGP at 1/1 and AGP2X for the last month or so. Not a single lockup.

When I had my P3 450 (that would do 600) I could run the G400 at 124Mhz AGP, but It would lock up every now and again in AGP2X mode. Im not sure if that was drivers though (this is about 5.11 for 5.13 days)

The Matrox cards have always handled high bus speeds, right from the first Millenium series.

Ali