Jetway OPTI-495SX 3/486WB
chipChipset
cpuCPU sockets
PGA168PGA132
cpuCPU platforms
386DX486
speedFSB speeds
25MHz33MHz40MHz50MHz
chipCache
64KB128KB256KB
ramRAM type
30-pin SIMM
ramMax RAM size
32MB
pwrPSU connector
Unknown
moboForm factor
Baby-AT (max 220 x 330mm)
dimDimensions
220 mm x 280 mm
connI/O ports
1x 
AT Keyboard
cardExpansion slots
3x 
32-bit VLB
2x 
8-bit ISA
6x 
16-bit ISA

Known issues:

  • Leaky Ni-Cd clock battery.

Remove the Ni-Cd battery as soon as possible and neutralize the leakage using white vinegar. Some more in-depth look may be needed to properly fix the motherboard. The battery can then be replaced using this https://github.com/wiretap-retro/Not-A-Varta.

Last updated 2021-09-13T17:06:35Z
 TRW ID: 6828
chipsetChipset
chipsetChipset parts
OPTi 82C495SX OPTi 82C392SX (any brand) 82C206
drv Drivers: not available
BIOS images: 1 file
Manuf.
POST String
Note
Core Ver.
BIOS Ver.
AMI
40-0100-001276-00101111-060692-495_X86
060692
doc Documentation: 1 entry
doc Other files: not available
Model
Speed
FSB
Voltages
L1 Cache
L2 Cache
L3 Cache
Core
Process
TDP
AMD Am386 DX/DXL-40
40MHz
40MHz
5V
-
-
-
-
800nm
3W
AMD Am386 DX/DXL-33
33MHz
33MHz
5V
-
-
-
-
800nm
-
AMD Am486 DX2-80
80MHz
40MHz
5V
8KB
-
-
-
-
-
AMD Am486 DX-40
40MHz
40MHz
5V
8KB
-
-
-
-
-
Cyrix 486DLC-40
40MHz
40MHz
5V
1KB
-
-
-
-
-
Cyrix 486DLC-33
33MHz
33MHz
5V
1KB
-
-
-
-
-
Cyrix 486DLC-25
25MHz
25MHz
5V
1KB
-
-
-
-
-
Cyrix Cx486 DX-50
50MHz
50MHz
5V
8KB
-
-
M6
-
-
Cyrix Cx486 DX2-80
80MHz
40MHz
5V
8KB
-
-
M7
-
-
Cyrix Cx486 DX-40
40MHz
40MHz
5V
8KB
-
-
M6
-
-
Cyrix Cx486 S40 FasCache
40MHz
40MHz
5V
8KB
-
-
M5
-
-
Cyrix Cx486 DX2-66
66MHz
33MHz
5V
8KB
-
-
M7
-
-
Cyrix Cx486 DX2-66 (WB)
66MHz
33MHz
5V
8KB
-
-
M7
-
-
Cyrix Cx486 DX-33
33MHz
33MHz
5V
8KB
-
-
M6
-
-
Cyrix Cx486 S33 FasCache
33MHz
33MHz
5V
2KB
-
-
M5
-
-
Cyrix Cx486 DX2-50
50MHz
25MHz
5V
8KB
-
-
M7
-
-
Cyrix Cx486 DX2-50 (WB)
50MHz
25MHz
5V
8KB
-
-
M7
-
-
Cyrix Cx486 S25 FasCache
25MHz
25MHz
5V
8KB
-
-
M5
-
-
Intel RapidCAD-1
33MHz
33MHz
5V
-
-
-
-
800nm
-
Intel i386 DX-33
33MHz
33MHz
5V
-
-
-
-
1500nm
-
Intel i386 DX-25
25MHz
25MHz
5V
-
-
-
-
1500nm
-
Intel i486 DX 50
50MHz
50MHz
5V
8KB
-
-
P4
1000nm
-
Intel i486 DX2 66
66MHz
33MHz
5V
8KB
-
-
P24
800nm
5W
Intel i486 DX2 66 (WB)
66MHz
33MHz
5V
8KB
-
-
P24D
800nm
-
Intel i486 DX 33
33MHz
33MHz
5V
8KB
-
-
P4
1000nm
-
Intel i486 SX 33
33MHz
33MHz
5V
8KB
-
-
P23
1000nm
-
Intel i486 SX2 50
50MHz
25MHz
5V
8KB
-
-
-
800nm
-
Intel i486 DX2 50
50MHz
25MHz
5V
8KB
-
-
P24
800nm
-
Intel i486 DX2 50 (WB)
50MHz
25MHz
5V
8KB
-
-
P24D
800nm
-
Intel i486 DX 25
25MHz
25MHz
5V
8KB
-
-
P4
1000nm
-
Intel i486 SX 25
25MHz
25MHz
5V
8KB
-
-
P23
1000nm
-
Texas Instruments 486DLC/E-40
40MHz
40MHz
5V
1KB
-
-
-
-
-
UMC U5S-SUPER40
40MHz
40MHz
5V
8KB
-
-
U5S
600nm
-
UMC U5SX 486-40
40MHz
40MHz
5V
8KB
-
-
U5SX
600nm
-
UMC U5SD 486-40
40MHz
40MHz
5V
8KB
-
-
U5SD
600nm
-
UMC U5SX 486-33
33MHz
33MHz
5V
8KB
-
-
U5SX
600nm
-
UMC U5S-SUPER33
33MHz
33MHz
5V
8KB
-
-
U5S
600nm
-
UMC U5SD-SUPER33
33MHz
33MHz
5V
8KB
-
-
U5SD
600nm
-
UMC U5S-SUPER25
25MHz
25MHz
5V
8KB
-
-
U5S
600nm
-
Supported NPUs:
Model
Speed
FSB
Part Number
Weitek WTL4167
25MHz
25MHz
4167-025-GCD
Weitek WTL4167
33MHz
33MHz
4167-033-GCD

Disclaimer

The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.