Pentium 4 2.66 vs Xeon E5440

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Primary details

Comparing Xeon E5440 and Pentium 4 2.66 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2137not rated
Place by popularitynot in top-100not in top-100
Market segmentServerDesktop processor
Power efficiency1.77no data
Architecture codenameno dataNorthwood (2002−2004)
Release date1 January 2008 (16 years ago)August 2002 (22 years ago)

Detailed specifications

Xeon E5440 and Pentium 4 2.66 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 coresno data1 (Single-Core)
Threadsno data1
Base clock speed2.83 GHzno data
Boost clock speedno data2.66 GHz
L1 cacheno data8 KB
L2 cacheno data512 KB
L3 cache12 MB L2 Cache0 KB
Chip lithography45 nm130 nm
Die sizeno data146 mm2
Maximum core temperature67 °Cno data
Number of transistorsno data55 million
64 bit support+-
Windows 11 compatibility--
VID voltage range0.85V-1.35Vno data

Compatibility

Information on Xeon E5440 and Pentium 4 2.66 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 configurationno data1
SocketLGA771478
Power consumption (TDP)80 Watt110 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5440 and Pentium 4 2.66. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology-no data
Hyper-Threading Technology-no data
Idle States+no data
Thermal Monitoring+-
Demand Based Switching+no data
FSB parity+no data

Security technologies

Xeon E5440 and Pentium 4 2.66 technologies aimed at improving security, for example, by protecting against hacks.

TXT-no data
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5440 and Pentium 4 2.66 are enumerated here.

VT-x+no data
EPT-no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5440 and Pentium 4 2.66. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR1, DDR2

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.



Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Xeon E5440 2374
+1412%
Pentium 4 2.66 157

Pros & cons summary


Chip lithography 45 nm 130 nm
Power consumption (TDP) 80 Watt 110 Watt

Xeon E5440 has a 188.9% more advanced lithography process, and 37.5% lower power consumption.

We couldn't decide between Xeon E5440 and Pentium 4 2.66. We've got no test results to judge.

Be aware that Xeon E5440 is a server/workstation processor while Pentium 4 2.66 is a desktop one.


Should you still have questions on choice between Xeon E5440 and Pentium 4 2.66, ask them in Comments section, and we shall answer.

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Intel Xeon E5440
Xeon E5440
Intel Pentium 4 2.66
Pentium 4 2.66

Similar processor comparisons

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Community ratings

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


4 479 votes

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3.3 13 votes

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Questions & comments

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