Pentium M 745 vs Pentium D 840

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Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated3503
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Seriesno dataPentium M
Power efficiencyno data0.34
DesignerIntelIntel
Manufacturerno dataIntel
Architecture codenameSmithfield (2005)Dothan (2004−2005)
Release dateMay 2005 (20 years ago)10 May 2004 (21 years ago)

Detailed specifications

Pentium D 840 and Pentium M 745 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 cores2 (Dual-core)1 (Single-Core)
Threads21
Base clock speed3.2 GHz1.8 GHz
Boost clock speed3.2 GHz1.8 GHz
Bus rateno data400 MHz
L1 cache28 KB32 KB
L2 cache2 MB2 MB
L3 cache0 KB0 KB
Chip lithography90 nm90 nm
Die size206 mm287 mm2
Maximum core temperature70 °C100 °C
Number of transistors169 million144 million
64 bit support+-
Windows 11 compatibility--
VID voltage range1.2V-1.4V1.276V-1.34V

Compatibility

Information on Pentium D 840 and Pentium M 745 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 configuration21
SocketPLGA775H-PBGA479,PPGA478
Power consumption (TDP)130 Watt7.5 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 840 and Pentium M 745. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)++
Turbo Boost Technology--
Hyper-Threading Technology--
Idle States+-
Demand Based Switching--
PAE32 Bitno data
FSB parity--

Security technologies

Pentium D 840 and Pentium M 745 technologies aimed at improving security, for example, by protecting against hacks.

TXT--
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 840 and Pentium M 745 are enumerated here.

VT-d-no data
VT-x--

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 840 and Pentium M 745. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataOn certain motherboards (Chipset feature)

Pros & cons summary


Physical cores 2 1
Threads 2 1
Power consumption (TDP) 130 Watt 7 Watt

Pentium D 840 has 100% more physical cores and 100% more threads.

Pentium M 745, on the other hand, has 1757.1% lower power consumption.

We couldn't decide between Intel Pentium D 840 and Intel Pentium M 745. We've got no test results to judge.

Note that Pentium D 840 is a desktop processor while Pentium M 745 is a notebook one.

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Intel Pentium D 840
Pentium D 840
Intel Pentium M 745
Pentium M 745

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Community ratings

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3.7 10 votes

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3 13 votes

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