Asus P65UP5 C-P55T2D User Manual - Page 14
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III. INSTALLATION 3. CPU External (BUS) Frequency Selection (JP2, JP3) These jumpers tells 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 multiplied by the BUS Ratio equals the CPU's Internal frequency (the advertised CPU speed). BUS Freq. JP3 JP2 66MHz [1-2] [2-3] 60MHz [2-3] [1-2] 50MHz [1-2] [1-2] JP2 JP3 JP2 JP3 JP2 JP3 R III. INSTALLATION (Jumpers) 1 2 3 66MHz 1 2 3 60MHz 1 2 3 50MHz CPU External Clock (BUS) Frequency Selection Intel Pentium Pro (P6) Processor: CPU BUS (CPU Card BUS Ratio) Internal Ratio JP13 JP14 JP15 JP16 200MHz 3.0x [ON] [ON] [OFF] [ON] 180MHz 3.0x [ON] [ON] [OFF] [ON] 166MHz 2.5x [ON] [OFF] [ON] [ON] 150MHz 2.5x [ON] [OFF] [ON] [ON] (Chipset Freq on CPU Card) Ext. JP6 JP7 Freq. [ON] [OFF] 66MHz [OFF] [ON] 60MHz [ON] [OFF] 66MHz [OFF] [ON] 60MHz (CPU Ext. Freq on Baseboard) JP3 JP2 [1-2] [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [1-2] Intel Pentium (P5) Processor: CPU BUS (CPU Card BUS Ratio) Internal Ratio JP15 JP16 200MHz 3.0x [ON] [OFF] 166MHz 2.5x [ON] [ON] 150MHz 2.5x [ON] [ON] 133MHz 2.0x [OFF] [ON] 120MHz 2.0x [OFF] [ON] 100MHz 1.5x [OFF] [OFF] 90MHz 1.5x [OFF] [OFF] 75MHz 1.5x [OFF] [OFF] Ext. Freq. 66MHz 66MHz 60MHz 66MHz 60MHz 66MHz 60MHz 50MHz (CPU Ext. Freq on Baseboard) JP3 JP2 [1-2] [2-3] [1-2] [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2] [1-2] 14 ASUS P/I-P65UP5 User's Manual