Intel Pentium D 820 vs Core 2 Extreme QX6700

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General info

Comparing Core 2 Extreme QX6700 and Pentium D 820 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking2092not rated
Place by popularitynot in top-100not in top-100
Value for money2.94no data
Market segmentDesktop processorDesktop processor
SeriesCore 2 Extreme (Desktop)Pentium D
Architecture codenameKentsfield (2007)Smithfield (2005)
Release dateno dataMay 2005 (18 years old)
Current price$312 $157
Value for money

Performance per price, higher is better.

no data

Technical specs

Core 2 Extreme QX6700 and Pentium D 820 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)2 (Dual-core)
Threads42
Base clock speedno data2.8 GHz
Boost clock speed2.67 GHz2.8 GHz
Bus support1066 MHz800 MHz
L1 cacheno data28 KB
L2 cacheno data2 MB
L3 cacheno data0 KB
Chip lithography65 nm90 nm
Die sizeno data206 mm2
Maximum core temperatureno data64 °C
Number of transistorsno data169 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo
VID voltage rangeno data1.2V-1.4V

Compatibility

Information on Core 2 Extreme QX6700 and Pentium D 820 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 data2
Socketno dataPLGA775
Power consumption (TDP)130 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme QX6700 and Pentium D 820. You'll probably need this information if you require some particular technology.

AES-NIno data-
Enhanced SpeedStep (EIST)no data-
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data-
Idle Statesno data+
Thermal Monitoringno data-
Demand Based Switchingno data-
PAEno data32 Bit
FSB parityno data-
Statusno dataDiscontinued

Security technologies

Core 2 Extreme QX6700 and Pentium D 820 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Extreme QX6700 and Pentium D 820 are enumerated here.

VT-dno data-
VT-xno data-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX6700 and Pentium D 820. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR1, DDR2, DDR3
ECC memory supportno data-

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.

Benchmark coverage: 68%

Core 2 Extreme QX6700 2118
+324%
Pentium D 820 499

Core 2 Extreme QX6700 outperforms Pentium D 820 by 324% in Passmark.

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Benchmark coverage: 19%

Core 2 Extreme QX6700 4022
+185%
Pentium D 820 1412

Core 2 Extreme QX6700 outperforms Pentium D 820 by 185% in 3DMark06 CPU.

Advantages and disadvantages


Physical cores 4 2
Threads 4 2
Chip lithography 65 nm 90 nm
Power consumption (TDP) 130 Watt 95 Watt

We couldn't decide between Core 2 Extreme QX6700 and Pentium D 820. We've got no test results to judge.


Should you still have questions on choice between Core 2 Extreme QX6700 and Pentium D 820, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core 2 Extreme QX6700
Core 2 Extreme QX6700
Intel Pentium D 820
Pentium D 820

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User ratings: view and submit

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4.3 43 votes

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3.2 162 votes

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Questions and comments

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