AOpen AX45 (SiS 645) Mainboard
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The board looks impressive: it is based on black textolite with a silvery
aluminum heatsink.
Accessories:
- Package: a colorful design with a typical cutout;
- Documentation: a poster with brief description of functional connectors
and settings;
- Cables: 1 ATA66/100 and 1 FDD;
- Register card for user;
- CD with software including:
As we have a preproduction sample, the drivers are lacking.
The layout has some disadvantages: CD-in are located in front of the
PCI slots, IDE - behind them and an FDD connector is on the left edge of
the board. There is a connector for a bracket with LEDs monitoring the
POST procedure (Dr. Led technology), though the bracket itself is not included
into the package. A special plate is mounted onto the back side of the
board to prevent troubles caused by massive coolers.
The feed circuits incorporate 10 capacitors of 1500 uF and 3 of 2200
uF.
There are the following controllers: AC'97 codec ALC201A from Avance
with a connector for audio-outs on the computer's front panel, and I/O
83637HF-AW controller from Winbond (supports a Memory Stick Card reader,
for which there is a connector on the board).
Non-unsoldered connectors: Realtek 8100 network controller.
Brief characteristics of the board: memory slots - 3 DDR SDRAM;
expansion slots - AGP/ 6 PCI/ CNR; I/O ports - 2 COM/ LPT/ 2 PS/2/ 6 USB;
dimensions - 305x245 mm.
Adjustment can be carried out with:
| Jumpers and switches |
Jumper to clear up CMOS |
 |
| BIOS based on v6.00PG from Award |
Setup of memory timings |
+ |
CAS Latency, DRAM Command Rate, System Performance |
| Setup of memory frequency |
+ |
DDR200, DDR266, DDR333 |
| Setup of AGP bus |
+ |
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| Setup of PCI bus |
- |
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| Changeable scaler of AGP and PCI buses |
+ |
At FSB of 100 MHz - 1:1, 3:4, 3:5. At FSB of 133 MHz - 4:3, 1:1, 4:5 |
| Manual assignment of interrupts |
- |
 |
| Changeable FSB frequency |
+ |
100, 100,9, 105, 108, 112, 133 |
| Changeable CPU multiplier |
+ |
x8 - x50 |
| Changeable core voltage |
- |
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| Changeable memory voltage |
- |
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| Changeable chipset voltage |
- |
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| Changeable AGP bus voltage |
- |
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On the one hand, the board shows great speed characteristics and has
an excellent appearance; on the other hand, it lacks for a wide range of
settings.
Test results:
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