Entry by Carlos S. M.
Soyo SY-5VX

Soyo SY-5VX


CPU support

Supported sockets:
  • Socket 7
Front Side Bus speed: 50/60/66/75 MHz
Supported architectures:
  • AMD K5 5k86
  • Cyrix 6x86 M1
  • Cyrix 6x86L M1L
  • Intel Mobile Pentium P54C
  • Intel Pentium P54C
  • Intel Pentium P54CQS
  • Intel Pentium P54CS
  • Intel Pentium MMX P55C
  • Intel Pentium MMX Overdrive P55C
  • Intel Pentium Overdrive P54CS
Note! Some steppings might require updated BIOS/microcode to work properly.

System memory

  • Type: EDO 70/60 ns
    4x 72-pin SIMM
    ECC memory is optional
  • Type: SDRAM 66 MHz
    2x 168-pin DIMM
Max supported: 512.00 MB
Max cacheable 64/128 MB due to chipset limitations.


Northbridge/MCH: Intel 430VX
Southbridge/ICH/PCH/MCP: Intel PIIX3
SuperIO: UMC UM8669F
Creative Vibra 16C audio IC over ISA bus
1 Mbit Parallel BIOS ROM

Power supply

Main board power: 20-pin ATX

Expansion slots

3 PCI slots
4 16-bit ISA slots

Rear I/O ports

PS/2 keyboard
PS/2 mouse
2x DE-9 serial
1x DB-25 parallel
Audio connectors: Line out, Line in, Microphone in
MIDI/game port

Internal I/O headers

2x USB 1.0 (1.1 Mb/s)
Audio headers: CD in
Wavetable header
IrDA header


2 IDE channels, up to 16 MB/s
Floppy connector, up to 2 drives

Circuit board

ATX form factor
PCB manufactured in the year 1996




All files are checked before upload to make sure no harmful software is included. If your antivirus software gets triggered, it's most likely a false positive.


The info you find here might not be 100% correct. This is due to a couple of reasons:
  • I'm an idiot and I misread/misspelled something
  • I have a different board revision from yours
  • The production date/plant is different and they might have used slightly different components
Feel free to improve the quality and quantity of this database by contributing with your entries. Use the contact links in the footer to get in touch.

Share this board

Latest motherboards

Gigabyte GA-EP45-UD3LR

Intel P45/Intel ICH10R motherboard for LGA775 CPUs.


VIA VT82C694X/VIA VT82C686B motherboard for PGA370 CPUs.

Gigabyte GA-EX58-UD4

Intel X58/Intel ICH10R motherboard for LGA1366 CPUs.

Latest articles

So... you want to build a Windows 98 retro PC?

By realismbro285, published 2021-05-20

A few notes on the hardware database

By bobosG, published 2021-04-19