51-0615-001107-00111111-071595-82430VX-H

[jumenwoke]

I HAVE ATTACHED THE COMPLETE STINGS AND WILL LIKE SOMEONE TO HELP ME ID THE MOBO ASAP THANKS FOR YOUR HELP.

51-0615-001107-00111111-071595-82430VX-H. IS THIS MOBO UPGRADABLE. I MEAN, IS THIS THE TYPE THAT CAN TAKE AMD K6-2 PROCESSOR. PRESENTLY IT HAS INTEL 120MHZ, CAN I UPGRADE IT TO A 200Mhz?

Your help will very much be appreciated.

[ajzchips]

It's a DATAEXPERT board.
http://www.wimsbios.com/index.htm?/HTML ... xpert.html

Being a 430VX board, I doubt it'll accept a K6-2.

[KachiWachi]

Does the board have seperate VCore and VI/O?

[edwin]

EXP8661
core voltage can be set for 2.9, 3.3 and 3.45 but not the 2.4 or 2.2 needed for the K6-2. Pentium 200 classic (P54C single volatge) is possible. Good luck in finding one, they're scarce...

[NickS]

EXP8661AMI11.ZIP 8661i11.rom
51-0615-001107-00111111-071595-82430VX-AMIBIOS
EXP8661S Rev 1.1 <Plug n Play BIOS>

EXP8661AW111.ZIP 8661a111.bin
03/18/97-i430VX-2A59GD09C-00
EXP8661 VER 1.11 BIOS

EXP8661AW22.ZIP 8661a22.bin
12/23/96-i430VX-2A59GD0BC-00
EXP8661 Ver 2.2 BIOS

From http://web.archive.org/web/199801282006 ... xp8661.htm

EXP 8661
Intel 430VX P54c/P55c PCI 2.1 Motherboard
2x16550 Serial Port,1 ECP/EPP Parallel Port,2x Bus Master EIDE Port & FDC Port Windows 95 Plug&Play Compliance with Flash BIOS, DRAM/EDO/SYNC DRAM SIMMs support,MESI Protocol for L2 Pipeline Burst Cache support.


Features

EXP8661 is a Intel 75/90/100/133/150/166/180/200 Mhz P54C/P55C & Cyrix 6x86 P120,P150. P166 Mhz 256K Pipeline Burst Cache upgradeable to 512k Cache with Cache Module SIMM socket.
Support 3.3V/2.9V/2.5V selectable for Intel P55C 200Mhz & Intel OverDrives upgradeable.
Design based on P54C Intel 430VX(371/437/438) with Bus Master IDE Controller integrated.
Supports MESI Protocol (Modified Exclusive Shared Invaid) to maintain the data coherence for L2 Cache to optimize CPU bus utilization.
Supports 4MB-256MB DRAM/EDO Memory utilizing 4 x 72 pin SIMMs socket.
Supports 1 x 168-pin DIMM socket for 3.3V/5V Synchronous Asymmetrical Single/Double DRAM Module.
Integrated Programmable 2 serials (16550) / 1 Parallel (ECP/EPP) /FDC controller (Winbond 787/768)/ps2 Mouse Port and Mini-din PS2 Keyboard option.
Support 2 x PCI Bus Master IDE ports to reduce the work load of the Host Processor or CPU.
Support Flash AMI BIOS for Plug & Play/DMI Features to provides an ease-of-use feature of installation for configuration of add-on cards for users. NCR PCI SCSI firmware integrated in System BIOS.
Support Universal Serial Bus Port for USB Device Expansion & Infrared IR (1152Kbps/Sec) option.

What the brochure says is not always true; do you have jumpers to select P54/P55, 2.9V and 2.5V ?
I think almost all K6-2s were 2.2V; the other issue may be that the voltage regulators on the motherboard may not supply sufficient current for a faster CPU. You *could* try a 2.4V K6-3 but I would not spend money on it.

[edwin]

You have jumpers to set 2.9 but not lower according to the manual I have.