iXBT Labs - Computer Hardware in Detail






ASUS P4B266-M (i845D) Mainboard

It's one more board from this giant. As I mentioned earlier this company makes every attempt to fill all market segments with its solutions.


  • Package: an old design;
  • Documentation: a user manual in English;
  • Cables: 1 ATA66/100, and 1 FDD;
  • Bracket with 2 USB ports;
  • Bracket for the rear panel;
  • CD with software including:
    • drivers;
    • Adobe Acrobat Reader;
    • Winbond Voice Edit;
    • ASUS Update - for downloading a new BIOS version and updating it from the Windows;
    • ASUS Logo;
    • PowerPlayer SE;
    • PowerDVD;
    • VideoLive Mail;
    • ASUS Hotkey;
    • Intel LDCM (LANDesk Client Manager);
    • PC-Cillin 2000;
    • ASUS PCProbe;
    • screensaver.

Despite its mATX format the layout is quite convenient; I just don't like a USB connector located too close to the front edge and audio-ins in front of the PCI slots. Besides, it might be difficult to get to the memory modules when an AGP video card is inserted. It's not difficult to reach switches and jumpers.

The 3-channel switching voltage regulator incorporates 11 capacitors of 1500 uF and 3 of 2200 uF.

The following controllers are integrated: an audio one based on capabilities of the chipset and Analog Devices (AD1885) codec; a network one based on the Realtek RTL8100 chip supporting 10 BaseT/100 BaseTX.

Non-unsoldered connectors: none.

The system monitoring is supported by the ASUS ASM58 Mozart-2. Processor voltage (+/-3.3, +/-5 and +/-12 V), speed of 2 fans and a temperature of the processor (a built-in sensor) can be controlled. There are 2 connectors for adjustable connection of fans.

Brief characteristics of the board: memory slots - 2 DDR SDRAM; expansion slots - AGP/ 3 PCI/ CNR; I/O ports - 2 COM/ LPT/ 2 PS/2/ 4 USB 1.1; dimensions - 245x245 mm.

Adjustment can be carried out with:

jumpers and switches Switches to change a FSB frequency 100, 105, 109 MHz
Jumper to enable/disable an audio controller
Jumper to make possible to start up a computer with a PS/2 keyboard
BIOS based on v6.00PG from Award Setup of memory timings + CAS Latency, RAS to CAS Delay, RAS Precharge Delay, Active Precharge Delay, Idle Timer
Setup of memory frequency + DDR200/DDR266
Setup of AGP bus +
Setup of PCI bus +
Changeable scaler of AGP and PCI buses -
Manual assignment of interrupts +
Changeable FSB frequency + In 1 MHz increments, 100-200 MHz
Changeable CPU multiplier + x8-x50
Changeable core voltage -
Changeable memory voltage -
Changeable chipset voltage -
Changeable AGP bus voltage -

We used the latest available version of the BIOS - 1003.

The board is average as far as performance and configuration settings are concerned. It will be an optimal solution for an office computer.

Test results:

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