iXBT Labs - Computer Hardware in Detail






Gigabyte 8SG667 (SiS648) Mainboard

The company has a wide range of boards in its arsenal: from no-frills budget solutions to top models which takes pages to list all of them. And today we have a plain offering without extra niceties. 


  • Package of a standard design; 
  • Documentation: user manual, poster with installation instructions -  in English; 
  • Cables: 1 ATA66/100/133, 1 ATA33 and FDD; 
  • Bracket with 2 USB ports; 
  • 2 CDs containing: 
    • drivers; 
    • DirectX 8.1; 
    • Adobe Acrobat Reader; 
    • Norton Internet Security 2002; 
    • Gigabyte EasyTune 4; 
    • Gigabyte Face Wizard; 
    • Gigabyte Windows Utility Manager; 
    • Gigabyte Management Tools. 

Convenience is sacrificed to the dimensions: the 20 cm wide board forces us to bear with its flaws. Though there are not many downsides, or rather, they are traditional and peculiar to most full-sized samples: audio-ins are in front of the PCI, and the IDE are behind them, and the power supply connectors are tucked in between the back panel and the processor's socket, and when a video card is installed it's difficult to handle the memory modules. The board has no switches or jumpers. 

The 2-channel switching voltage regulator incorporates 2 capacitors of 3300 uF and several less capacious ones. (this is not much at all, though the board is oriented towards the budget segment; but it contradicts to the wide overclocking capabilities provided in the BIOS). 

The following controllers are integrated: 

  • audio controller based on the chipset's capabilities and Avance Logic ALC650AC'97 codec supporting 5.1 audio systems and having connectors for front audio inputs/outputs and for SPDIF;  
Non-unsoldered connectors: network controller and RJ45 connector. 

The system monitoring is supported by the ITE IT8700F chip. What is controlled: 

  • processor voltage, 1.8, +3.3, +5 and +12 V; 
  • speed of 2 fans; 
  • temperatures of the processor (a built-in sensor) and the board (a built-in sensor).
There are 2 connectors for adjustable connection of fans. 

Brief characteristics of the board: memory slots - 3 DDR SDRAM; expansion slots - AGP/ 5 PCI; I/O ports - 2 COM/ LPT/ 2 PS/2/ 6 USB 2.0; dimensions - 305x200 mm.  

Adjustment can be carried out with:

BIOS based on the 6.00 version from AwardSetup of memory timings+Top Performance
Setup of memory frequency+Auto, DDR200, DDR266, DDR333, DDR400
Setup of AGP bus- 
Setup of PCI bus- 
Changeable scaler of AGP and PCI buses+AGP(PCIx2) = 60-255 MHz in 1MHz steps
Manual assignment of interrupts+ 
Changeable FSB frequency+100-355 MHz in 1MHz steps
Changeable CPU multiplier+x8-x50
Changeable core voltage- 
Changeable memory voltage+Normal, +0.1, +0.2 V
Changeable chipset voltage- 
Changeable AGP bus voltage+Normal, +0.1 V

We used the latest available version of the BIOS - BIOS F3. 

Judging by the functions and components of the board, it seems to be a match for those who want an inexpensive office system, but incredible overclocking potential of the BIOS (255 MHz on the AGP - is your video card ready for such torture?) confuse and even frighten me :). 

Test results: 


Dmitry Mayorov (destrax@ixbt.com

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