grazie per avermi risposto
queste sono le caratteristiche della scheda madre:


Property Value
Manufacturer Compaq
Model 077Ch
Serial Number 4D22KPVD8005

Chipset Vendor Intel Corporation
Chipset Model 845 Brookdale Host-Hub Interface Bridge (A3-step)
South Bridge 82801BA (ICH2) LPC Interface Controller

CPU Intel Pentium 4
Cpu Socket Socket 478 [XU1]
Processor Upgrade ZIF Socket
Max CPU Speed 2300 MHz

System Slots 3 PCI, 1 AGP

Memory Summary
Location System board or motherboard
Maximum Capacity 3072 MBytes
Memory Slots 3
Error Correction None
Use System memory
Location System board or motherboard
Maximum Capacity 512 KBytes
Memory Slots 1
Error Correction None
Use Flash memory

Warning! Accuracy of DMI data cannot be guaranteed

dal bios non ho visto nessun settaggio del bus

questo è il bios:

Property Value
BIOS Version COMPAQ - 20020115
686Y2 v2.10
BIOS Date 01/15/02
BIOS Vendor Compaq
Version 686Y2 v2.10
Release 01/15/2002
BIOS Size 512 KB
Characteristics - supports booting from ATAPI ZIP drive
- supports booting from LS-120
- supports AGP
- supports legacy USB
- supports ACPI
- Multi Processor supported by BIOS
- supports INT 17 printer services
- supports INT 14 serial services
- supports INT 09 and 8042 keyboard services
- supports INT 05 print-screen
- supports INT 13 3.5-inch/720K floppy services
- supports INT 13 5.25-inch/1.2M floppy services
- supports INT 13 5.25-inch/360K floppy services
- supports INT 13 for Japanese Toshiba 1.2M floppy (3.5-inch, 360rpm)
- supports Enhanced Disk Drive specification
- supports selectable boot
- supports booting from CD-ROM
- allows BIOS shadowing
- upgradeable (Flash) BIOS
- supports APM
- supports Plug-and-Play
- supports PCI

DMI Version 2.3 @000F9C00


che ne dici... cambio tutto o cerco una cpu con un bus 400.....