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Positives (+)

The DIB4X is based on the twin CPU architecture, this means it has a slot-1 and socket-370 on board. Only one CPU can be used at the same time, the optional Slot/Socket will simply act as an adapter. The DIB4X is based on the popular BX chip-set, supporting several FSB speeds: 66/83/100/103/112/124/133/140, all the changes are done via the BIOS. A total of Five 1500uF capacitors are present around the slot-1, fourteen 1000Uf capacitors are placed around the DIMM slots and mixed among the 4 PCI slots. Several smaller capacitors (100uF) are also spreaded around the layout.

The mainboard will auto detect the CPU type and automaticaly choose the proper CPU voltage. You may play with the voltage manually by using the JP11 jumper. When SHORT is selected the CPU voltage will be 0.05V higher than normal. The Voltage regulator on the DIB4X is capable of 1.3V ~ 3.5V to support different Central Processing Units.

The DIB4X features a fairly normal, or should I say, standard expansion interface (PCI/ISA/AGP): four PCI slots, 1 ISA and of course one AGP X2 port. If you take a closer look at the layout, another PCI slot could have been easly added. The PCB was actually designed to host the fifth PCI slot but I suppose was eliminated for production costs. Three DIMM Slots are available, supporting up to 384MB of memory. Of course it supports the ECC feauture as in almost all BX based motherboards. The ECC feature can be used to check the memory sub-system and make sure there are no errors during the memory read and write phases. Before enabling this option, you need to make sure your memory modules are compatible with the ECC feature..

The positioning of the HDD/FDD connector ports is very comfortable, as they are out of the way of all other components on the motherboard due to the larger size of the PCB. The ATX power supply connector is conveniently located next to the right portion of the IDE ports (ATA/66). The layout itself is very well suited to a twin motherboard.

For hardware monitoring (optional) the board uses winbond W83783S, designed to monitor system voltage, system temperature and cooling fans. When the CPU temperature is too high, the system BIOS will send a signal to the system board to give a series of beepings and slow down the CPU speed (Throttling Speed). There is a hardware-monitoring program included.

The complete KIT came packed with two IDE cables, one standard ATA/33 (40pins) and an ATA/66 compatible 80pin cable. One FDD cable was also present. Azza is one of the few companies that actually decided to include these options. The included user’s manual covers the DIBX4 and the DIBX2+ Motherboards. The guide it self covers almost everything a beginner would ever need, such as installing the CPU and RAM, and a full look at the BIOS with the explanations for every option. There was even a chapter on installing the ATA/66 drivers in older operating systems such as Windows 95.

Azza decided to include a bonus pack featuring Virtual Drive, which is basically a CD-ROM emulator so that you can run applications without the CD-ROM drive. You can copy & compress the CD programs to the hard-drive and run them from that source instead or inserting your CD every time. The second bonus is Virus Buster; which as you may guessed, is an Anti-Virus based application. The second CD is Azza’s own branded CD. It includes video clips on troubleshooting and related material. Azza also decided to include the ATA/66 driver on a floppy disk; this may come in handy for users running older versions of Windows.

We decided to perform an overclocking test on a Pentium III 550E CPU. We used Mushkin’s High Peformance 2.0 PC-133 module for the test. 133MHz was our first try and the results were succesfull. We didn’t experience any stability issues. We then decided to go for 140, the system booted and entered windows without any problems. Unfortunately that wasn’t the case a few minutes later as the system kept crashing and giving errors.

Positives (+)
  • ATA/66 On-board
  • Dual CPU Architecture
  • Great Price
Negatives (-)
  • Features only 2 fan connectors
  • Only one Voltage increase available
  • Poor Stability at speeds beyond 133MHz FSB
Test System

Intel Pentium 550E FC-PGA w/Iwill Slotket II Adapter
128MB Mushkin PC133 2.0, 1.5 and EMS PC133 128MB HSDRAM
XPERT98 AGP, Matrox G400, S3 VIRGE DX
Maxtor 10.2GB 7200RPM, ATA/66
Microsoft Windows 98SE
3Com EtherLink XL TPO 10Mb Ethernet NIC
Three different video cards were tested on the motherboard and three different memory brands.


The DIB4X can be considered as a wise choice compared with some of the other BX boards on the market. The board features an ATA//66 controler on board, putting it in the higher range BX products. The price of the DIB4X is around the average cost for a BX solution ($100). This particular product may not be the best choice for the overclocker because it lacks more than one voltage increase over stock, and we had instability at speeds beyond 133MHz. It could be considered a good solution for someone seeking to build a lower end machine or one that will not be overclocked. For more informations on Azza check them out at www.azza.com.tw

Oleg Mitskaniouk

Web Target PC


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