Pentium D 820 vs Core 2 Quad Q6600

VS

Aggregate performance score

Core 2 Quad Q6600
2007
4 cores / 4 threads, 105 Watt
1.15
+271%
Pentium D 820
2005
2 cores / 2 threads, 95 Watt
0.31

Core 2 Quad Q6600 outperforms Pentium D 820 by a whopping 271% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Quad (Desktop) Q6600 and Pentium D 820 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking23883101
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
SeriesCore 2 Quad (Desktop)Pentium D
Power efficiency1.040.31
Architecture codenameKentsfield (2007)Smithfield (2005)
Release dateno dataMay 2005 (19 years ago)

Detailed specifications

Core 2 Quad (Desktop) Q6600 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 speed2.4 GHz2.8 GHz
Bus rate1066 MHz800 MHz
L1 cache64K (per core)28 KB
L2 cache8 MB (shared)2 MB
L3 cache0 KB0 KB
Chip lithography65 nm90 nm
Die size2x 143 mm2206 mm2
Maximum core temperatureno data64 °C
Maximum case temperature (TCase)71 °Cno data
Number of transistors582 million169 million
64 bit support++
Windows 11 compatibility--
VID voltage rangeno data1.2V-1.4V

Compatibility

Information on Core 2 Quad (Desktop) Q6600 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 configuration12
Socket775PLGA775
Power consumption (TDP)105 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad (Desktop) Q6600 and Pentium D 820. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)+-
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data-
Idle Statesno data+
Demand Based Switchingno data-
PAEno data32 Bit
FSB parityno data-

Security technologies

Core 2 Quad (Desktop) Q6600 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 Quad (Desktop) Q6600 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 Quad (Desktop) Q6600 and Pentium D 820. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR1, DDR2, DDR3

Synthetic benchmark performance

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


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core 2 Quad Q6600 1.15
+271%
Pentium D 820 0.31

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.

Core 2 Quad Q6600 1823
+265%
Pentium D 820 499

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.

Core 2 Quad Q6600 3547
+151%
Pentium D 820 1412

Gaming performance

Pros & cons summary


Performance score 1.15 0.31
Physical cores 4 2
Threads 4 2
Chip lithography 65 nm 90 nm
Power consumption (TDP) 105 Watt 95 Watt

Core 2 Quad Q6600 has a 271% higher aggregate performance score, 100% more physical cores and 100% more threads, and a 38.5% more advanced lithography process.

Pentium D 820, on the other hand, has 10.5% lower power consumption.

The Core 2 Quad Q6600 is our recommended choice as it beats the Pentium D 820 in performance tests.


Should you still have questions on choice between Core 2 Quad Q6600 and Pentium D 820, ask them in Comments section, and we shall answer.

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Intel Core 2 Quad Q6600
Core 2 Quad Q6600
Intel Pentium D 820
Pentium D 820

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Community ratings

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


3.8 1797 votes

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Questions & comments

Here you can ask a question about Core 2 Quad Q6600 or Pentium D 820, agree or disagree with our judgements, or report an error or mismatch.