Asus P2L-M P2L-M User Manual - Page 16

R III. INSTALLATION Jumpers III. INSTALLATION 3. CPU External (BUS) Frequency Selection (FS0, FS1, FS2) These jumpers 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 Ratio equals the CPU's Internal frequency (the advertised CPU speed). 4. CPU to BUS Frequency Ratio (BF0, BF1, BF2, BF3) These jumpers set the frequency ratio between the Internal frequency of the CPU and the External frequency (called the BUS Clock) within the CPU. These must be set together with the above jumpers CPU External (BUS) Frequency Selection. P2L-M CPU Settings BF3 BF2 BF1 BF0 BF3 BF2 BF1 BF0 BF3 BF2 BF1 BF0 1 1 1 2 2 2 3 3 3 3.0x(3/1) 3.5x(7/2) BF3 BF2 BF1 BF0 BF3 BF2 BF1 BF0 1 1 4.0x(4/1) 2 2 3 3 4.5x(9/2) 5.0x(5/1) CPU Core:Bus Frequency Multiple FS0 FS1 FS2 FS0 FS1 FS2 FS0 FS1 FS2 FS0 FS1 FS2 1 1 1 1 2 2 2 2 3 3 3 3 50MHz 66MHz 75MHz CPU Bus Frequency 83MHz WARNING! Do not overclock your processor. Frequencies above 66MHz exceed 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 jumpers by the Internal speed of your processor as follows: CPU Model Speed Intel Pentium II 333MHz Intel Pentium II 300MHz Intel Pentium II 266MHz Intel Pentium II 233MHz F. Ratio 5.0x 4.5x 4.0x 3.5x BUS F. 66MHz 66MHz 66MHz 66MHz (BUS Freq.) FS0 FS1 FS2 [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] (Freq. Ratio) BF0 BF1 BF2 BF3 [2-3] [1-2] [1-2] [2-3] [1-2] [2-3] [1-2] [2-3] [2-3] [2-3] [1-2] [2-3] [1-2] [1-2] [2-3] [2-3] Intel Pentium II Processor in a SEC Cartridge (233-333MHz 512KB/256KB/0KB L2 Cache) NOTE: Voltage Regulator Output Selection (VID) is not needed for the Pentium II processor because it sends a VID signal directly to the onboard power controller. 16 ASUS P2L-M User's Manual