Pentium III 800 vs Phenom II X4 840T

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Primary details

Comparing Phenom II X4 840T and Pentium III 800 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2163not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.28no data
Market segmentDesktop processorDesktop processor
Power efficiency1.48no data
Architecture codenameZosma (2010−2011)Coppermine T (2000)
Release date1 September 2010 (14 years ago)no data
Launch price (MSRP)$80no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Phenom II X4 840T and Pentium III 800 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 cores4 (Quad-Core)1 (Single-Core)
Threads41
Base clock speed2.9 GHzno data
Boost clock speed3.2 GHz0.8 GHz
L1 cache128 KB (per core)8 KB
L2 cache512 KB (per core)256 KB
L3 cache6 MB (shared)0 KB
Chip lithography45 nm180 nm
Die size346 mm280 mm2
Maximum case temperature (TCase)no data69 °C
Number of transistors904 million44 million
64 bit support+-
Windows 11 compatibility--

Compatibility

Information on Phenom II X4 840T and Pentium III 800 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 configuration11
SocketAM3370
Power consumption (TDP)95 Watt38 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X4 840T and Pentium III 800 are enumerated here.

AMD-V+-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X4 840T and Pentium III 800. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3no data

Peripherals

Specifications and connection of peripherals supported by Phenom II X4 840T and Pentium III 800.

PCIe version2.0no data

Pros & cons summary


Physical cores 4 1
Threads 4 1
Chip lithography 45 nm 180 nm
Power consumption (TDP) 95 Watt 38 Watt

Phenom II X4 840T has 300% more physical cores and 300% more threads, and a 300% more advanced lithography process.

Pentium III 800, on the other hand, has 150% lower power consumption.

We couldn't decide between Phenom II X4 840T and Pentium III 800. We've got no test results to judge.


Should you still have questions on choice between Phenom II X4 840T and Pentium III 800, ask them in Comments section, and we shall answer.

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AMD Phenom II X4 840T
Phenom II X4 840T
Intel Pentium III  800
Pentium III 800

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Community ratings

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3.4 38 votes

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3.6 63 votes

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