Ultimate Hardware 2019 BETA About Board

Soyo SY-025D2

Image by Microhouse Image by BreakPoint
Form factor:
Baby AT
Chipset: SiS 85C461 (ISA 386DX/486 Single Chip) [85C461]
Dimensions:230mm x 218mm
CPU socket and platform: 486
Supported FSB speeds: 25MHz 33MHz 50MHz
Supported RAM size and types: 32 MB 30-pin SIMM
Cache: 64 KB 128 KB 256 KB
BIOS images:
Manuf. POST String Note BIOS Ver. Core Ver.
AMI 40-0100-001102-00101111-080893-SIS461 MG 080893
I/O ports: Expansion slots: Known issues:
  • 1x AT Keyboard
  • 2x 32-bit VLB
  • 1x 8-bit ISA
  • 6x 16-bit ISA
  • Leaky Ni-Cd clock battery
Supported CPUs:
Model Speed FSB Voltages L1 Cache L2 Cache L3 Cache Core Process TDP Part Number
Intel i486 DX 50 50MHz 50MHz 5V 8KB (Write-Through) - - P4 1000nm - A80486DX-50
Intel i486 DX2 66 66MHz 33MHz 5V 8KB (Write-Through) - - P24 800nm 5W A80486DX2-66
Intel i486 SX 33 33MHz 33MHz 5V 8KB (Write-Through) - - P23 1000nm - A80486SX-33
Intel i486 DX 33 33MHz 33MHz 5V 8KB (Write-Through) - - P4 1000nm - A80486DX-33
Intel i486 DX2 50 50MHz 25MHz 5V 8KB (Write-Through) - - P24 800nm - A80486DX2-50
Intel i486 SX 25 25MHz 25MHz 5V 8KB (Write-Through) - - P23 1000nm - A80486SX-25
Intel i486 DX 25 25MHz 25MHz 5V 8KB (Write-Through) - - P4 1000nm - A80486DX-25