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**Neil** · 13 November 1999, 21:22

I agree. Its tough to find a good video board that can handle the overclocked agp bus, and also maintain a 2x on it.

I tried several tnt2-ultras and was unable to get 100% stability on even a 86mhz agp bus.

My g400max is a very nice card indeed. Good to know that it can handle agp 93mhz

A good and stable overclock I found for the g400max is 173/216. I got this with a 432 pll, and dividers of 2.5/2/2.5

I would like to see your 3dmark scores with a similar overclock.

[This message has been edited by Neil (edited 14 November 1999).]

**mathew** · 14 November 1999, 06:06

Hi Neil

I think that will be a little to high for my nerves but I have done this and I am quite pleased with the results :P

System Specs

G400 MAX
P3 450 running at 630 mhz (140 fsb) 2.0v s-code SL35D Costa Rica (oem)
Alpha P3 125c Copper Embedded heatsink
Abit BE6 Motherboard
128 mb pc 100 sdram (my lucky dimm)
17.3gb Fujitsu h\d Udma 66
21"Sony monitor
SB Live Value
Diamond Super Express 56i Modem
Pioneer 10X DVD Drive
Supermicro SC-750 full tower case

3DMark Build Version: 200 Date: 14/11/99
Time: 12:33:45
Project Name:MAX Benchmarking

Comments: Over clocked

System PLL Clock :- 321.30
Graphics Clock (DCLK) :- 160.65
Memory Clock (MCLK) :- 214.20
WARP Clock (WCLK) :- 160.65

Project Settings (Template):
Rendering Platform: Internal (Matrox Millennium G400 DualHead - English)
Resolution: 800*600
Color Depth: 16-bit Color
CPU Optimization: Intel(r) Pentium(r) III
Z-Buffer: 16-bit
Frame Buffer: Triple buffering
Refresh Rate: 84 Hz
Looping: Disabled
Texture Format: 16-bit, 4444 RGBA
Run Tests: Once
Title Screen: Shown

Test Results:
3DMark Result : 6,238 3DMarks
Synthetic CPU 3D Speed : 9,714 CPU 3DMarks
Rasterizer Score : 2,745 3DRasterMarks
Game 1 - Race: 67.2 FPS
Game 2 - First Person: 58.2 FPS
Fill Rate : 265.0 MTexels/s
Fill Rate With Multi-Texturing : 264.7 MTexels/s
2MB Texture Rendering Speed: 391.5 FPS
4MB Texture Rendering Speed: 313.2 FPS
8MB Texture Rendering Speed: 216.9 FPS
16MB Texture Rendering Speed: 163.7 FPS
32MB Texture Rendering Speed: 86.2 FPS
Bump Mapping Emboss, 3-pass: 121.4 FPS
Bump Mapping Emboss, 2-pass: 158.8 FPS
Bump Mapping Emboss, 1-pass: 287.0 FPS

System:
Windows Version: Windows 4 , Build 1998
DirectX Version: 4.07.00.0700
Bios Version: rv3.50v
Bios Date: 08/24/99
Total Physical Memory: 128 MB
Free Physical Memory: 48 MB

Processor:
Processor Type: Intel Pentium III
Processor Speed: 630 MHz
Processor Caps: MMX SSE
L1 Cache Size: 32 KB
L2 Cache Size: 512 KB

Desktop:
2D Display Adapter Name: Matrox Millennium G400 DualHead - English
2D Display Adapter Driver Date: 10-19-1999
Monitor Name: Dell D1626HT
Monitor Driver Date: 5-11-1998
Desktop Resolution: 1280*1024
Desktop Color Depth: 32-Bit Color

3D Accelerator:
Name: Matrox Millennium G400 DualHead - English
Driver Name: G400DD32.DLL
Driver Version: 4.11.01.1300
Total Video Memory On Card: 32,697 KB
Total Texture Memory: 134,073 KB
Bus: AGP X1

**mathew** · 14 November 1999, 14:14

Thanks KvHagedorn

Glad you like :] I would probably come across a bit mad doing this to one of the most expensive graphics cards "I guess it just makes it more intense"

Well to be honest as you can see from the benchmarks it really does seem to like it don't you think.

There is one thing though I would like to get it using X2 agp ,it has decided to default to X1 , how do you change it to X2 is there a setting somewhere that I have missed or is it somewhat more difficult?

Any info gratefully recieved Regards Matt {:O)

**KvHagedorn** · 14 November 1999, 17:45

Damned impressive!

------------------
Kind Regards,

KvH

**Neil** · 14 November 1999, 20:45

Thanks Matt.

at 180 my g400max locks up tight in under a second, but has been fine at 173/216 for some time now. Also ran fine using the matrox utility at 110%, so I know the ram is very stable at 220.

Is there any negative affects at setting the pll to 432? For example, the default clock for the max is 150. If you set the pll to 450 and use a divider of 3, this still gets you to 150, but does running the PLL higher do anything at all (good/bad)? Or it is all with the final clock speed?

**WereWolf** · 15 November 1999, 08:51

It may work for a while, but someday soon your expensive G400max is gonna say *poof*...
it's made to run at 66mhz AGP bus... not at 89mhz, let alone 93mhz!!!
just a warning...

**mathew** · 15 November 1999, 16:29

heh nothing like the smell of "pcb napalm" in the morning.

Oh well as long as it lasts till the next kick ass graphics chip hits the streets hey:P

I will say this I took my time in choosing this matrox card,and I think I made the right choice.
As far as matrox cards go they are "ROCK STEADY" Regards Matt {:O) ())(| |
)())(| |
()())(|
_##_#_#_
\] ****\
\]------\

**DuRaNgO** · 15 November 1999, 16:48

well said mathew
jim

------------------
PIII-500mhz @ 620 ! with an Abit BE6 mobo
128mb pc-100
Mill G400 (YAHOO!!!) 32mb @ 165/205 with MGATweak-410mhz, 2.5, 2), PD 5.30 & bios 1.5-22
Maxtor 14.3 gb Uata66 hdd
SB Live!
Winblows 98se & DX7
32 lbs. of fans, heatsinks and aluminum ductwork

3DMark Result 5954.69 3DMarks
Synthetic CPU 3D Speed 9325.69 CPU 3DMarks
Rasterizer Score 2791.72 3DRasterMarks
Game 1 - Race 65.07 FPS
Game 2 - First Person 54.89 FPS
Fill Rate 268.79 MTexels/s

**Ali** · 15 November 1999, 17:40

Werewolf, Ive been running my G400 at 100Mhz (AGP set to 1/1 in Bios) ever since I got it. Its fine at that speed, and even runs at AGP 2X

I dont think you will have any problems with it. My G200 ran at 100Mhz for about 6 months, my Millenium2 AGP even ran at 100 for a while (until my G200 turned up).

I think we have to face it that Matrox make damn stable hardware.

------------------
P3 600@618, 128Mb CAS2 RAM, Abit BX6R2.02, G400 32 DH, Voodoo2 SLI, Adaptec 2940UW, soundblaster 32 ISA, D-link 10/100 NIC, 36XCD, 6X4X24 CD-RW, 2X4 DVD-RAM, Zip100, Cheetah HDD, Medalist Pro HDD, 20inch KTX as Primary, 15inch TVM as secondary, KTX speakers with a sub, and some other suff I have forgotten.

**Neil** · 15 November 1999, 20:04

Thinking about this more,
if a g400max is clocked at 150/200, this is independent of the agp bus speed.
So, no matter how much you overclock the agp bus, the g400max is still running at 150/200, so you are not overclocking the vid card.

You are overclocking your mobo and agp bus, which really means you are just transferring the data faster to the vid card, but the vid card will still only process the data at 150/200.

And just for a sidenote, a 2x agp does not mean your 66mhz agp is running at 132mhz, its still at 66mhz but is utilizing the leading/falling edge of the signal to get a performance boost.

**Rags** · 15 November 1999, 21:21

Neil,

You are correct, modifying the AGP bus does not change the internal clocks on the G400, but it does have an effect on the external pathways. It does run the card out of specification, and does run the card harder. That is why TNT(2)'s have a hard time with an OC'ed FSB (just ask Kyle at Hard OCP about how the TNT2 pukes at high FSB, yet the G400 skates right through). And you are correct about the Speed of the AGP bus, it is and always has been 66Mhz.

Rags

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