GIGA-BYTE TECHNOLOGY CO., LTD.
GA-5AX (REV. 4.1)
| Device Type | Mainboard |
| Processor | CX 6x86MX/CX MII/IBM 6x86MX/AM K6/AM K6-2/K6-III/IDT Winchip 2/IDT Winchip 3/Rise MP6/Pentium/Pentium MMX |
| Processor Speed | 133/166/200/225/233/266/300/333/350/380/400/450/475/500/550MHz |
| Chip Set | ALI |
| Maximum Onboard Memory | 768MB (EDO & SDRAM supported) |
| Cache | 512KB |
| BIOS | Award |
| Dimensions | 305mm x 185mm |
| I/O Options | 16-bit ISA slots (2), 32-bit PCI slots (5), AGP slot, ATX power connector, floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 keyboard port, PS/2 mouse port, serial ports (2), USB ports (2), Wake-on-LAN connector |
CONNECTIONS |
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Purpose |
Location |
Purpose |
Location |
| AGP slot | AGP | 16-bit ISA slots | IS1 - IS2 |
| ATX power connector | ATX | CPU fan power | JP1 |
| PS/2 keyboard port | CN1 | Wake-on-LAN connector | JP5 |
| PS/2 mouse port | CN2 | Green LED | JP6/A |
| USB port 1 | CN3 | Reset switch | JP6/B |
| USB port 2 | CN4 | Power switch | JP6/C |
| Parallel port | CN5 | Speaker | JP6/D |
| Serial port 2 | CN6 | Power LED | JP6/E |
| Serial port 1 | CN7 | IDE interface LED | JP6/F |
| IDE interface 1 | CN8 | Green PC switch | JP6/G |
| IDE interface 2 | CN9 | 32-bit PCI slots | PC1 - PC5 |
| Floppy drive interface | CN10 | ||
USER CONFIGURABLE SETTINGS |
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Function |
Label |
Position |
|
» |
Power-on by keyboard disabled | JP3 | Pins 2 & 3 closed |
| Power-on by keyboard enabled | JP3 | Pins 1 & 2 closed | |
DIMM CONFIGURATION |
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Size |
Bank 0 |
Bank 1 |
Bank 2 |
8MB |
(1) 1M x 64 |
None |
None |
16MB |
(1) 1M x 64 |
(1) 1M x 64 |
None |
16MB |
(1) 2M x 64 |
None |
None |
24MB |
(1) 1M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
32MB |
(1) 2M x 64 |
(1) 2M x 64 |
None |
32MB |
(1) 4M x 64 |
None |
None |
32MB |
(1) 2M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
48MB |
(1) 2M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
48MB |
(1) 4M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
64MB |
(1) 4M x 64 |
(1) 4M x 64 |
None |
64MB |
(1) 8M x 64 |
None |
None |
64MB |
(1) 4M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
80MB |
(1) 8M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
96MB |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
96MB |
(1) 8M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
128MB |
(1) 8M x 64 |
(1) 8M x 64 |
None |
128MB |
(1) 16M x 64 |
None |
None |
128MB |
(1) 8M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
144MB |
(1) 16M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
160MB |
(1) 16M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
192MB |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
192MB |
(1) 16M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
256MB |
(1) 16M x 64 |
(1) 16M x 64 |
None |
256MB |
(1) 32M x 64 |
None |
None |
256MB |
(1) 16M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
272MB |
(1) 32M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
288MB |
(1) 32M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
320MB |
(1) 32M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
384MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
384MB |
(1) 32M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
512MB |
(1) 32M x 64 |
(1) 32M x 64 |
None |
512MB |
(1) 32M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
768MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 32M x 64 |
| Note: Board supports EDO & SDRAM memory. | |||
CPU SPEED SELECTION (CX 6x86MX) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 166MHz | 66MHz | 2.0 | On | Off | Off |
200MHz |
66MHz |
2.5x |
On | On | Off |
200MHz |
75MHz |
2.0x |
On | Off | Off |
| 233MHz | 66MHz | 3.0x | Off | On | Off |
| 233MHz | 75MHz | 2.5x | On | On | Off |
| 233MHz | 83MHz | 2.0x | On | Off | Off |
| 266MHz | 66MHz | 3.5x | Off | Off | Off |
| 266MHz | 75MHz | 3.0x | Off | On | Off |
| 266MHz | 83MHz | 2.5x | On | On | Off |
CPU SPEED SELECTION (CX 6X86MX, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 166MHz | 66MHz | 2.0 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
200MHz |
66MHz |
2.5x |
2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
200MHz |
75MHz |
2.0x |
1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| 233MHz | 66MHz | 3.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 233MHz | 75MHz | 2.5x | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| 233MHz | 83MHz | 2.0x | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
| 266MHz | 66MHz | 3.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 266MHz | 75MHz | 3.0x | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| 266MHz | 83MHz | 2.5x | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (CX MII) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 300MHz | 66MHz | 3.5x | Off | Off | Off |
| 333MHz | 66MHz | 4.0x | On | Off | On |
| 333MHz | 75MHz | 3.5x | Off | Off | Off |
| 333MHz | 83MHz | 3.0x | Off | On | Off |
| 366MHz | 100MHz | 2.5x | On | On | Off |
| 400MHz | 100MHz | 3.0x | Off | Off | Off |
CPU SPEED SELECTION (CX MII, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 300MHz | 66MHz | 3.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 333MHz | 66MHz | 4.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 333MHz | 75MHz | 3.5x | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| 333MHz | 83MHz | 3.0x | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
| 366MHz | 100MHz | 2.5x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
| 400MHz | 100MHz | 3.0x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (IBM 6x86MX) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 166MHz | 66MHz | 2.0 | On | Off | Off |
200MHz |
66MHz |
2.5x |
On | On | Off |
200MHz |
75MHz |
2.0x |
On | Off | Off |
| 233MHz | 66MHz | 3.0x | Off | On | Off |
| 233MHz | 75MHz | 2.5x | On | On | Off |
| 233MHz | 83MHz | 2.0x | On | Off | Off |
| 266MHz | 66MHz | 3.5x | Off | Off | Off |
| 266MHz | 75MHz | 3.0x | Off | On | Off |
| 266MHz | 83MHz | 2.5x | On | On | Off |
CPU SPEED SELECTION (IBM 6X86MX, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 166MHz | 66MHz | 2.0 | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
200MHz |
66MHz |
2.5x |
2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
200MHz |
75MHz |
2.0x |
1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| 233MHz | 66MHz | 3.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 233MHz | 75MHz | 2.5x | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| 233MHz | 83MHz | 2.0x | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
| 266MHz | 66MHz | 3.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 266MHz | 75MHz | 3.0x | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| 266MHz | 83MHz | 2.5x | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (AM K6) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 | |
| 166MHz | 66MHz | 2.5x | On | On | Off | |
| 200MHz | 66MHz | 3.0x | Off | On | Off | |
233MHz |
66MHz |
3.5x |
Off | Off | Off | |
266MHz |
66MHz |
4.0x |
On | Off | On | |
300MHz |
66MHz |
4.5x |
On | On | On | |
| » | 300MHz | 100MHz | 3.0x | Off | On | Off |
CPU SPEED SELECTION (AM K6, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 | |
| 166MHz | 66MHz | 2.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | |
| 200MHz | 66MHz | 3.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | |
233MHz |
66MHz |
3.5x |
2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | |
266MHz |
66MHz |
4.0x |
2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | |
300MHz |
66MHz |
4.5x |
2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | |
| » | 300MHz | 100MHz | 3.0x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (AM K6-2) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 | |
266MHz |
66MHz |
4.0x |
On | Off | On | |
| » | 300MHz |
100MHz |
3.0x |
Off | On | Off |
| 333MHz | 66MHz | 5.0x | Off | On | On | |
| 333MHz | 95MHz | 3.5x | Off | Off | Off | |
| 350MHz | 100MHz | 3.5x | Off | Off | Off | |
| 366MHz | 66MHz | 5.5x | Off | Off | On | |
| 380MHz | 95MHz | 4.0x | On | Off | On | |
| 400MHz | 100MHz | 4.0x | On | Off | On | |
| 450MHz | 100MHz | 4.5x | On | On | On | |
| 475MHz | 95MHz | 5.0x | Off | On | On | |
| 500MHz | 100MHz | 5.0x | Off | On | On | |
| 550MHz | 100MHz | 5.5x | Off | Off | On | |
CPU SPEED SELECTION (AM K6-2, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 | |
266MHz |
66MHz |
4.0x |
2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | |
| » | 300MHz |
100MHz |
3.0x |
1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
| 333MHz | 66MHz | 5.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | |
| 333MHz | 95MHz | 3.5x | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | |
| 350MHz | 100MHz | 3.5x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | |
| 366MHz | 66MHz | 5.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | |
| 380MHz | 95MHz | 4.0x | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | |
| 400MHz | 100MHz | 4.0x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | |
| 450MHz | 100MHz | 4.5x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | |
| 475MHz | 95MHz | 5.0x | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | |
| 500MHz | 100MHz | 5.0x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | |
| 550MHz | 100MHz | 5.5x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (AM K6-III) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 400MHz | 100MHz | 4.0x | On | Off | On |
| 450MHz | 100MHz | 4.5x | On | On | On |
475MHz |
95MHz |
5.0x |
Off | On | On |
500MHz |
100MHz |
5.0x |
Off | On | On |
550MHz |
100MHz |
5.5x |
Off | Off | On |
CPU SPEED SELECTION (AM K6-III, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 400MHz | 100MHz | 4.0x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
| 450MHz | 100MHz | 4.5x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
475MHz |
95MHz |
5.0x |
1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
500MHz |
100MHz |
5.0x |
1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
550MHz |
100MHz |
5.5x |
1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (IDT WINCHIP2) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 200MHz | 66MHz | 3.0x | Off | On | Off |
| 200MHz | 100MHz | 2.0x | On | Off | Off |
| 225MHz | 75MHz | 3.0x | Off | On | Off |
| 233MHz | 66MHz | 3.5x | Off | Off | Off |
| 233MHz | 100MHz | 2.33x | Off | On | On |
| 266MHz | 66MHz | 4.0x | On | Off | On |
| 266MHz | 100MHz | 2.66x | Off | Off | On |
| 300MHz | 100MHz | 2.5x | On | On | Off |
CPU SPEED SELECTION (IDT WINCHIP2, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 200MHz | 66MHz | 3.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 200MHz | 100MHz | 2.0x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
| 225MHz | 75MHz | 3.0x | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| 233MHz | 66MHz | 3.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 233MHz | 100MHz | 2.33x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
| 266MHz | 66MHz | 4.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 266MHz | 100MHz | 2.66x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
| 300MHz | 100MHz | 2.5x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (IDT WINCHIP3) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 266MHz | 100MHz | 2.33x | Off | On | On |
CPU SPEED SELECTION (IDT WINCHIP3, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 266MHz | 100MHz | 2.33x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (RISE MP6) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 266MHz | 100MHz | 2.0x | On | Off | Off |
CPU SPEED SELECTION (RISE MP6, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 266MHz | 100MHz | 2.0x | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (PENTIUM) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 133MHz | 66MHz | 2.0x | On | Off | Off |
| 166MHz | 66MHz | 2.5x | On | On | Off |
| 200MHz | 66MHz | 3.0x | Off | On | Off |
CPU SPEED SELECTION (PENTIUM, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 133MHz | 66MHz | 2.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 166MHz | 66MHz | 2.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 200MHz | 66MHz | 3.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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CPU SPEED SELECTION (PENTIUM MMX) |
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CPU speed |
Clock speed |
Multiplier |
SW1/1 | SW1/2 | SW1/3 |
| 166MHz | 66MHz | 2.5x | On | On | Off |
| 200MHz | 66MHz | 3.0x | Off | On | Off |
| 233MHz | 66MHz | 3.5x | Off | Off | Off |
CPU SPEED SELECTION (PENTIUM MMX, CON'T) |
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CPU speed |
Clock speed |
Multiplier |
JP7 | JP8 | JP9 | JP10 |
| 166MHz | 66MHz | 2.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 200MHz | 66MHz | 3.0x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| 233MHz | 66MHz | 3.5x | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
Note: Designated pins should be in the closed position. |
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VCORE SELECTION |
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Voltage |
SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | |
| 1.3V | Off | Off | Off | Off | On | |
| 1.4V | Off | On | Off | Off | On | |
| 1.5V | Off | Off | On | Off | On | |
| 1.6V | Off | On | On | Off | On | |
| 1.7V | Off | Off | Off | On | On | |
| 1.8V | Off | On | Off | On | On | |
| 1.9V | Off | Off | On | On | On | |
| 2.0V | Off | On | On | On | On | |
| 2.1V | On | Off | Off | Off | Off | |
| » | 2.2V | Off | On | Off | Off | Off |
| 2.3V | On | On | Off | Off | Off | |
| 2.4V | Off | Off | On | Off | Off | |
| 2.5V | On | Off | On | Off | Off | |
| 2.6V | Off | On | On | Off | Off | |
| 2.7V | On | On | On | Off | Off | |
| 2.8V | Off | Off | Off | On | Off | |
| 2.9V | On | Off | Off | On | Off | |
| 3.0V | Off | On | Off | On | Off | |
| 3.1V | On | On | Off | On | Off | |
| 3.2V | Off | Off | On | On | Off | |
| 3.3V | On | Off | On | On | Off | |
| 3.4V | Off | On | On | On | Off | |
| 3.5V | On | On | On | On | Off | |