ECS P4VMM2 VER ?.? \ VOGONS

ECS P4VMM2 VER ?.?

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First post, by ApostolCV

Posted on 2024-11-20, 19:50

ApostolCV Offline

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Hello everyone!
I get that mobo...

This is quite interesting because as i know now it exists in a lot of versions and a lot vendors.
Known such as ECS , Mercury, Kobian , PCChips ..etc.
At least there are 5 different versions P4VMM2 mentioned at official site. The latest even support Prescott's , 🤣.
My version do not have any marks of it "ver."
Also BIOS of my mobo not listed at Theretroweb. It' from 12/25/2002.
The first strange is that it have jumper to use FSB 400/533 but with 533 it not post at all.
The second, Aida64 report that version of chipset is VT8751 . But Southbridge is VT8235.
So main question is does it real to push it to 400MHz FSB ?

Reply 1 of 5, by Karbist

Posted on 2024-11-20, 20:45

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I believe only v1.1 and v1.3 have DIP32 bios chip, later models are using PLCC32 bios.
v1.1 has p4m266 which only supports fsb 400,
v1.3 has p4m266a which supports fsb 400/533.

Reply 2 of 5, by Repo Man11

Posted on 2024-11-21, 01:32

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Doing some reading it looks as though there are two likely possibilities - they included the FSB jumper for the possibility that future chipset revisions would support 533 MHz FSB CPUs, or it is there to allow you to run the memory asynchronously from the FSB. I've a PCChips M930LMR that allows you to run the memory at 166 while the CPU is running at 100 (400). That board has an SiS chipset that doesn't officially support 533 MHz FSB, but it does work with those chips.

After watching many YouTube videos about older computer hardware, YouTube began recommending videos about trains - are they trying to tell me something?

Reply 3 of 5, by ApostolCV

Posted on 2024-11-21, 11:43

ApostolCV Offline

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Thanks for your feedback.
Sounds like it could be true.
Anyway even DRR 266 are bottleneck at this motherboard.

Reply 4 of 5, by buzzice

Posted on 2025-07-17, 17:56

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I'm using this motherboard as a retro Win 98SE / DOS 6.22 machine.

My attempt to install a Sound Blaster Live into it failed with a variety of drivers. I believe the card is defective so now I am researching a PCI sound card that will have good pure DOS 6.22 support as well as Windows 98 support.

Does anyone have any recommendations? I'm leaning towards a Yamaha YMF7XX series of cards. Unfortunately I cannot use an ISA card in this build as there are only PCI slots available.

I appreciate any suggestions.

Requirements:
1. Native DOS compatibility.
2. Win 98SE compatibility.

* EAX/A3d is not needed but nice to have.
* Good FM synth is a nice to have feature in DOS but does not have to be pure OPL-3.

Thanks!

Reply 5 of 5, by ApostolCV

Posted on 2025-07-17, 22:57

ApostolCV Offline

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I think YAMAHA YMF 7XX series like 754 are great idea.
It has fully supported by Win 98 and DOS. With OPL2 inside.

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