Changing G400 DualHead to G400 MAX through pins

[Wega]

Hi all you murc'ers!

I've changed the clock frequences of my G400 DualHead to match a G400 MAX... the pins goes like this:

--

;MGA Bios Programming Utility v2.18.000d
;(C) Matrox Graphics Inc. (2001)
;
Fill: 0 127 0xFF
;Matrox G400 AGP
;VGA Enabled - BIOS V2.1

0 2 0x412e
2 1 0x80
3 1 0xff
4 2 0x0401
6 2 0xca93
8 2 0x0009
10 2 0x0300
12 16 'xxxxxxxx'
28 6 '104'
36 2 0xfff0
38 1 90
39 1 90
40 1 90
41 1 90
42 1 90
43 1 90
44 1 34
45 1 34
46 4 0
50 1 0x3f
51 1 0xff
52 1 0xff
53 1 0xc2
54 1 0xff
55 1 82
56 1 41
57 4 0x0190a419
61 4 0x24045491
65 1 150
66 1 75
67 4 0x019b8419
71 4 0x24045491
75 1 150
76 1 75
77 4 0x019b8419
81 4 0x24045491
85 1 0xff
86 2 0x0c88
88 2 0x0c88
90 1 0xee
91 2 0x2cfe
93 2 0xfff9

:filetype TOUCAN
:PCBinfo 906-01
:SubsystemVendorId 0x2179102b

--

The Information tab under Control Panel -> Display -> Settings -> Advanced shows that my maximum RAMDAC speed is 360 MHz. Also MGA Tweak tells me that my card is running 150 core/200 memory.

Is it possible to alter the pins further to make the card (and the drivers as well) think it is a G400 MAX? I figured it would be something like changing pin 61, 71 and 81 from 0x24045491 to 0x20049911, pin 10 from 0x0300 to 0x0700 as well as changing the SUBSYS_ID from 2179102b to 0x217D102b?

Best regards
Rene Pedersen

p3-800eb, asus p3v-4x, 256mb cas2 pc133, 32mb matrox millennium g400 dualhead, 20gb quantum fireball plus lm, 6x/32x pioneer dvd-a03s, sb live! value, 10/100mbit 3com 905b, 17" sony g200

[Venturer]

You need to change SUBSYS_ID value!
The MAX SUBSYS_ID is 217d while the G400 standard one is 2179

Edit your PINS and change SubsystemVendorId from 0x2179102b to 0x217d102b
Now your board should be recognized as G400MAX!

[Venturer]

I ve a G400MAX and in the info tab it says Millennium G400MAX AGP! I think video drivers "read" what type of board you have not only from the core freq and SUBSYS_ID but also from the video memory.
It s related to the board memory controller (PINS 61, 71, 81). Standard G400 uses 6ns SDRAM , while the MAX version have 5ns SGRAM. So you can t change PINS because they have different memory types.

[Rags]

Venturer, you are wrong. The standard G400 uses SGRAM as well, only some OEM cards used SDRAM.

Rags

[Wega]

Hi Venturer!

I've changed the SUBSYS_ID. I removed the Matrox Graphics Software from Windows 2000 and installed the drivers again. This time it recognized my card as a G400 DualHead MAX.

But in the Information tab it says:

Model: Matrox Millennium G400 AGP

Shouldn't it say Matrox Millennium G400 MAX AGP?

[High_Jumbllama]

Can this be done with a Marvel too?

[Admiral]

Can what be done with a Marvel too ?

You mean changing the clock and ramdac settings, I thinks you can.

[Cyberdude]

Where can i get the programs to do this stuff?
like MGA Bios Programming Utility v2.18.000d
and others?

[George YS]

Originally posted by Cyberdude
Where can i get the programs to do this stuff?
like MGA Bios Programming Utility v2.18.000d
and others?

The BIOS programming utility is included in the BIOS download from matrox, the dos programming utility included in 2.08 can NOT be run in windows, therefore u are better to find the 2.07 BIOS for its dos programming utility, which can be run under windows environment.

[OZZIE_NO_GOOD]

hello where can i change those pins ??? are they in the bios update files ???

[Wombat]

Why bother?

[OZZIE_NO_GOOD]

hihih stil got a g400 and there coming a new one so i can burn this one heheh and maybe it works hehe

[Pegasus_gr]

Could someone please expain me the whole process?
I've been using a G400 DH (not the MAX version) for almost three years now, mainly for productive work (photoshop, flash, dreamweaver, max 3D, etc) but I've played quite a lot of games (even the latest MOHAA, Renegade C&C, RTCW, Jedi II etc.) I have been using Matrox's own tech support tweak utility but I'd like to push the card a bit more before I replace it.
By following this process while my card perform like the MAX version? Will I need a fun for the chip?

I'm using W2K SP2 with all the latest Patches, Via chipset with the latest drivers, Beta 5.84 G400 drivers.

Thanks in advance.

P.S. Have been reading MURC forums for over a year now. Can be quite entertaining somtimes. Also I've learned a thing or two here.

[gbm]

Think twice before changing your G400 into MAX version. When you look at MAX, you'll se some difference from "classic" / the FAN!!!

While for most G400 boards it's possible to turn them into MAXes, you should complete the transformation by attaching a fan to the G400 chip heatsink.

[OZZIE_NO_GOOD]

wel okay my g400 isnt going for max mhz but i got no fan on it so is i put one on is it possible that i gat higher results ??? can someone tell me that else i going to buy one this weekend and pus my g400 to the max because a replacerer is on his way hehe geus which one that will be hehe

and another question where can i read my ramdac frequentie because i changed my pin nummmbers no it says in my info tab i got ramdac off 400 mhz max is that possible ???


ok i am off to my cold beer now and wait till the sun is going to sching and giving me that beautiful ph bla bla i find the name of the new card to hard get a new one please hehe lol its to hard after a few couple of beers