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Processor Family |
Model Name |
Intel Celeron Mendocino |
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Performance Rating |
400 MHz |
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Front-side Bus Speed |
66 MHz |
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Multiplier Ratio |
6.0× |
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Physical Design |
Interface Packing |
242-Pin Slot 1 Cartridge |
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370-Pin PPGA Socket |
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Core Voltage |
2.0 volts |
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Power Consumption |
15 watts |
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Maximum Power |
23.4 watts |
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Celeron Mendocino |
Model Rating |
400 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 100 MHz |
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Typical O/C Potential |
450 – 498 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 VEK 16 |
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Vantec PIID-4535H |
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Thermalright SK6 |
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Globalwin CAK-38 |
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Recommended Peltier Active Cooler |
STEP-UP-53X2 |
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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 |
85° Celsius |
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The Celeron 400A is the last of the highly overclockable processors in the Mendocino family. The 400A operates with a 6× multiplier; thus overclocking the 100-MHz front-side bus speed yields a core operational speed of 600 MHz. A .25-micron design, the Celeron A cannot scale successfully beyond 550 or 600 MHz without using radical cooling technologies.
The majority of Celeron 400A processors will reach their maximum overclocked speed near 500 MHz. Only a small number of these chips will ever be stable at 600 MHz. Those who successfully overclock to this extended frequency will need to monitor core temperatures closely, as the .25-micron core of the Celeron A can reach damaging thermal loads in seconds. Quality forced-air heatsink coolers should prove adequate, but overclocking beyond 500 MHz with the retail Intel cooler should not be attempted.
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