Pentium 4 HT 551 vs Pentium D 820

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Primary details

Comparing Pentium D 820 and Pentium 4 HT 551 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking3101not rated
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
SeriesPentium Dno data
Power efficiency0.31no data
Architecture codenameSmithfield (2005)Prescott (2001−2005)
Release dateMay 2005 (19 years ago)June 2005 (19 years ago)

Detailed specifications

Pentium D 820 and Pentium 4 HT 551 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)
Threads22
Base clock speed2.8 GHzno data
Boost clock speed2.8 GHz3.4 GHz
Bus rate800 MHzno data
L1 cache28 KB16 KB
L2 cache2 MB1 MB
L3 cache0 KB0 KB
Chip lithography90 nm90 nm
Die size206 mm2109 mm2
Maximum core temperature64 °Cno data
Number of transistors169 million125 million
64 bit support+-
Windows 11 compatibility--
VID voltage range1.2V-1.4Vno data

Compatibility

Information on Pentium D 820 and Pentium 4 HT 551 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
SocketPLGA775775
Power consumption (TDP)95 Watt115 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 820 and Pentium 4 HT 551. 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
Demand Based Switching-no data
PAE32 Bitno data
FSB parity-no data

Security technologies

Pentium D 820 and Pentium 4 HT 551 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 Pentium D 820 and Pentium 4 HT 551 are enumerated here.

VT-d-no data
VT-x-no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Pentium 4 HT 551. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR1, DDR2, DDR3

Pros & cons summary


Physical cores 2 1
Power consumption (TDP) 95 Watt 115 Watt

Pentium D 820 has 100% more physical cores, and 21.1% lower power consumption.

We couldn't decide between Pentium D 820 and Pentium 4 HT 551. We've got no test results to judge.


Should you still have questions on choice between Pentium D 820 and Pentium 4 HT 551, ask them in Comments section, and we shall answer.

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Intel Pentium D 820
Pentium D 820
Intel Pentium 4 HT 551
Pentium 4 HT 551

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Community ratings

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


3.1
172 votes

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4.2
5 votes

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Questions & comments

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