III. HARDWARE SETUP 4. CPU External (BUS) Frequency Selection (DIP-Switch 1, 2, 3, 4) These function switches tell the clock generator what frequency to send to the CPU. These allow the selection of the CPU’s External frequency (or BUS Clock ). The BUS Clock times the BUS Multiple equals the CPU's Internal frequency (the advertised CPU speed). 5. CPU to BUS Frequency Multiple (DIP-Switch 7, 8, 9, 10) These function switches set the frequency multiple between the Internal fre- quency of the CPU and the External frequency (called the BUS Clock ) within the CPU.
3.0x(3/1) 5.5x(11/2) 3.5x(7/2) 4.0x(4/1) 4.5x(9/2) 5.0x(5/1) 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON CPU AGP PCI 66.8MHz 66.8MHz 33.4MHz Motherboard Settings III. H/W SETUP 1 2 3 4 5 6 7 8 9 10 ON 6.0x(6/1) 6.5x(13/2) 7.0x(7/1) 7.5x(15/2) 8.0x(8/1) 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON MEL-M CPU External Clock (BUS) Frequency Selection MEL-M CPU : BUS Frequency Multiple WARNING! Do not overclock your processor.
Frequencies above 66MHz ex- ceed the specifications for the onboard Intel Chipset and are not guaranteed to be stable. Overclocking can cause undue stress on the CPU and motherboard. It may result in a slower speed or other unpredictable outcomes. The table on the following page shows the approved CPUs and their settings. Set the DIP switches by the Internal speed of your processor as follows: (BUS Frequency Switches) (Frequency Multiple Switches) Intel CPU Model Speed Mult Freq.
1 2 3 4 7 8 9 10 Celeron (PPGA) 466MHz 7.0x 66MHz [OFF] [OFF] [OFF] [OFF] [ON] [OFF] [ON] [OFF] Celeron (PPGA) 433MHz 6.5x 66MHz [OFF] [OFF] [OFF] [OFF] [OFF] [ON] [ON] [OFF] Celeron (PPGA) 400MHz 6.0x 66MHz [OFF] [OFF] [OFF] [OFF] [ON] [ON] [ON] [OFF] Celeron (PPGA) 366MHz 5.5x 66MHz [OFF] [OFF] [OFF] [OFF] [OFF] [OFF] [OFF] [ON] Celeron (PPGA) 333MHz 5.0x 66MHz [OFF] [OFF] [OFF] [OFF] [ON] [OFF] [OFF] [ON] Celeron (PPGA) 300MHz 4.5x 66MHz [OFF] [OFF] [OFF] [OFF] [OFF] [ON] [OFF] [ON] 16 ASUS MEL-M User’s Manual