Amptron PM-7900
Chipset
CPU socket Socket 7 (PGA321)
CPU family
Pentium (P54)Pentium MMX (P55)
FSB speeds 50MHz60MHz66MHz75MHz83MHz100MHz
Cache
0B256KB512KB
RAM types 72-pin FPM72-pin EDOSDR UDIMM168-pin EDO UDIMM
Max RAM size
128MB
PSU connector
AT-Style (P8-P9)
Form factorBaby-AT (max 220 x 330 mm)
Dimensions260mm x 220mm
I/O ports1x
Floppy interface
2x
IDE interface
1x
PS/2 keyboard
1x
PS/2 mouse
1x
Parallel
2x
Serial
Expansion slots3x
32-bit PCI
4x
16-bit ISA
Notes
Same board as PCChips M520 except the battery location and it lacks an USB port. Known for having an illegal BIOS. Needs patched BIOS (either the patched last official BIOS or the Unicore BIOS) to use HDDs larger than 32 GB. Split Voltage CPU Support w/ VRM and BIOS update.
The board without a COAST module has no L2 cache.
Last updated 2023-03-06T20:01:00Z
Chipset
Chipset parts
Intel 82437VX (TVX)
Intel 82371SB (PIIX3)
Intel 82438VX (TDX)
Peripheral I/O (KBC/MS) chipsReal-Time Clock chips
Drivers:
1 entry
Language
Media type
OS Compatibility
Name
Version
1x
OS/2 Warp 3.0
Windows NT 3.5
Windows 95
Windows NT 3.51
Windows NT 4.0
Unknown
BIOS images:
2 files
Manuf.
POST String
Note
Core Ver.
BIOS Ver.
Award
Shares BIOS with PCChips M520
4.51PG
Other files:
not available
Model
Speed
FSB
Voltages
L1 Cache
L2 Cache
L3 Cache
Core
Process
TDP
No NPUs listed.
Image 1 of 2 (Microhouse)
Image 2 of 2 (Carlos S. M.)
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