Pentium III 866 vs Celeron 2.40

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Primary details

Comparing Celeron 2.40 and Pentium III 866 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Architecture codenameNorthwood (2002−2004)Coppermine T (2000)
Release dateMarch 2003 (21 year ago)20 March 2000 (24 years ago)

Detailed specifications

Celeron 2.40 and Pentium III 866 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores1 (Single-Core)1 (Single-Core)
Threads11
Boost clock speed2.4 GHz0.87 GHz
L1 cache8 KB32 KB
L2 cache128 KB256 KB
L3 cache0 KB0 KB
Chip lithography130 nm180 nm
Die size146 mm2106 mm2
Maximum case temperature (TCase)no data80 °C
Number of transistors55 million28 million
64 bit support--
Windows 11 compatibility--

Compatibility

Information on Celeron 2.40 and Pentium III 866 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration12
Socket478370
Power consumption (TDP)73 Watt27 Watt

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 2.40 and Pentium III 866. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataOn certain motherboards (Chipset feature)

Pros & cons summary


Chip lithography 130 nm 180 nm
Power consumption (TDP) 73 Watt 27 Watt

Celeron 2.40 has a 38.5% more advanced lithography process.

Pentium III 866, on the other hand, has 170.4% lower power consumption.

We couldn't decide between Celeron 2.40 and Pentium III 866. We've got no test results to judge.


Should you still have questions on choice between Celeron 2.40 and Pentium III 866, ask them in Comments section, and we shall answer.

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Intel Celeron 2.40
Celeron 2.40
Intel Pentium III  866
Pentium III 866

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


3 38 votes

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4 31 vote

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Questions & comments

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