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Processor Family |
Model Name |
Intel Pentium III Katmai |
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Performance Rating |
450 MHz |
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Front-side Bus Speed |
100 MHz |
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Multiplier Ratio |
4.5× |
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Physical Design |
Interface Packing |
242-Pin Slot 1 Cartridge |
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Core Voltage |
2.0 volts |
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Power Consumption |
17 watts |
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Maximum Power |
25.3 watts |
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Pentium III Katmai |
Model Rating |
450 MHz |
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Overclocking Potential |
Multiplier Lock Support |
Locked Multiplier |
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Typical Multiplier O/C |
N/A |
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Typical Front-side Bus O/C |
Up to 112 – 124 MHz |
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Typical O/C Potential |
504 – 558 MHz |
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Maximum O/C Potential |
600+ MHz |
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Overclocking Tolerances |
Recommended Cooling Type |
Forced-Air Heatsink |
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Recommended Heatsink Coolers |
Globalwin VES20 |
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Alpha P3125 |
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Recommended Peltier Active Cooler |
Swiftech MC1000 |
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PC-10a Cooler |
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Maximum Core Voltage |
2.2 volts with Heatsink Cooler |
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Maximum I/O Voltage |
3.5 volts with Chipset Cooler |
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Maximum Core Temperature |
80 – 85° Celsius |
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The Katmai 450 MHz introduced the new Pentium III core. This chip is solid for overclocking due to its highly refined .25-micron core, coupled with a low 4.5× multiplier and 100-MHz front-side bus support. The Katmai shares many attributes with its Pentium II sibling, though the higher-quality cache memory chips allow the Katmai 450 to scale up to 600 MHz efficiently, given sufficient cooling.
The 4.5× multiplier is well suited for 124-MHz front-side bus overclocking, yielding a respectable 558 MHz. A small number of these chips will reach 600 MHz with quality cooling, but be prepared to bump the core voltage to 2.2 volts for stability. The Katmai does demand power; alternative cooling methods based on Peltier or liquid technologies are desirable.
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