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Jetway 845EDAK (i845E) Mainboard



Traditionally, we have received the board of this company in the OEM package. But only a box is lacking. The board looks ordinary - a blue PCB and purple memory slots. 

Accessories: 

  • Documentation: user manual in English; 
  • Cables: 2 ATA66/100/133 and FDD; 
  • Bracket for the rear computer panel; 
  • Diskette with drivers for an additional IDE controller; 
  • CD containing: 
    • drivers; 
    • Adobe Acrobat Reader; 
    • Hardware Doctor; 
    • PC-Cillin 2002; 
    • Recovery Genius; 
    • Magic BIOS; 
    • Award Winflash; 
    • DirectX 7.0 è 8.1. 

The layout has several typical flaws: additional IDE connectors and audio-ins are not in very good positions, and when a video card is installed it's difficult to handle memory modules. It's not difficult to reach jumpers when the board is already installed. Their functions are shown on the textolite.

The 3-channel switching voltage regulator incorporates 6 capacitors of 3300 uF and 4 of 1200 uF. 

The following controllers are integrated: 

  • audio controller based on the ALC650 AC'97 codec supporting 5.1 audio systems and having a connector for front audio inputs/outputs;  
  • Additional IDE controller based on the Promise PDC20275 chip and supporting up to 4 IDE devices via the ATA133 protocol. 
The board supports the Recovery Genius technology for backup storing of important data on HDD. 

Non-unsoldered connectors: none. 

The system monitoring is supported by the Winbond W83627HF-AW chip. What is controlled: 

  • voltage of processor, AGP bus, memory, +1.25, +3.3, +5 and +12 V, VBAT and +5 V Standby; 
  • speed of 3 fans; 
  • temperatures of the processor (a built-in sensor), the board (a built-in sensor) and an external sensor connected to the board. 
There are 2 connectors for adjustable and 1 for unadjustable connection of fans. 

Brief characteristics of the board: memory slots - 2 DDR SDRAM; expansion slots - AGP/ 5 PCI/ CNR; I/O ports - 2 COM/ LPT/ 2 PS/2/ 6 USB 2.0; dimensions - 305x245 mm.  

Adjustment can be carried out with:
 

jumpers and switches Jumper to clear up the CMOS  
Jumpers to choose a FSB frequency Auto, 100 and 133 MHz
BIOS based on the AWARDBIOS 6.00PG from Phoenix Setup of memory timings + CAS Latency, Cycle Time, RAS to CAS Delay, RAS Precharge
Setup of memory frequency + Auto, DDR200, DDR266
Setup of AGP bus +  
Setup of PCI bus -  
Changeable scaler of AGP and PCI buses + PCI (AGP/2) = FSB/3, FSB/4, FSB/5, FSB/6
Manual assignment of interrupts -  
Changeable FSB frequency + 100-200 MHz in 1MHz steps
Changeable CPU multiplier + x8-x50
Changeable core voltage + 1.1-1.85 V in 0.025V steps
Changeable memory voltage + 2.5, 2.6, 2.7, 2.8 V
Changeable chipset voltage -  
Changeable AGP bus voltage + 1.5, 1.6 V

We used the latest available version of the BIOS - A04. 

This is board demonstrates an average performance; it combines a moderate price and quite good overclocking tools. 

Test results: 

 
Dmitry Mayorov (destrax@ixbt.com
 

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