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Processor Family |
Model Name |
Intel Pentium III Coppermine |
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Performance Rating |
866 MHz |
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Front-side Bus Speed |
133 MHz |
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Multiplier Ratio |
6.5× |
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Physical Design |
Interface Packing |
370-Pin FCPGA Socket |
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242-Pin Slot 1 Cartridge |
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Core Voltage |
1.65 volts |
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Power Consumption |
18 watts |
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Maximum Power |
26.9 watts |
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Pentium III Coppermine |
Model Rating |
866 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 |
140 – 150 MHz |
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Typical O/C Potential |
910 – 975 MHz |
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Maximum O/C Potential |
1000+ MHz |
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Overclocking Tolerances |
Recommended Cooling Type |
Forced-Air Heatsink |
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Recommended Heatsink Coolers |
Swiftech MCX370 |
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Alpha PAL8045 |
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Globalwin VOS32 |
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Recommended Peltier Active Cooler |
MCX370 Peltier |
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MC1000 Peltier |
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Maximum Core Voltage |
1.85 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° Celsius |
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Equipped with its 6.5× multiplier, the Pentium III Coppermine 866EB MHz is a contender for successful 1000+-MHz overclocking when paired with a quality motherboard. The 866EB demands a serious supply of wattage, so overclocking will require a massive forced-air heatsink cooler. The retail Intel heatsink will offer a minimal return at best; most configurations will reach 910 MHz before the system fails to boot.
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