i9-10900K vs Pentium D 820

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Aggregate performance score

Pentium D 820
2005
2 cores / 2 threads, 95 Watt
0.31
Core i9-10900K
2020
10 cores / 20 threads, 125 Watt
14.31
+4516%

Core i9-10900K outperforms Pentium D 820 by a whopping 4516% based on our aggregate benchmark results.

Primary details

Comparing Pentium D 820 and Core i9-10900K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking3101507
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data15.59
Market segmentDesktop processorDesktop processor
SeriesPentium Dno data
Power efficiency0.3110.83
Architecture codenameSmithfield (2005)Comet Lake (2020)
Release dateMay 2005 (19 years ago)30 April 2020 (4 years ago)
Launch price (MSRP)no data$488

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Pentium D 820 and Core i9-10900K 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)10 (Deca-Core)
Threads220
Base clock speed2.8 GHz3.7 GHz
Boost clock speed2.8 GHz5.2 GHz
Bus rate800 MHz8 GT/s
L1 cache28 KB64 KB (per core)
L2 cache2 MB256 KB (per core)
L3 cache0 KB20 MB (shared)
Chip lithography90 nm14 nm
Die size206 mm2206 mm2
Maximum core temperature64 °C100 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors169 millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+
VID voltage range1.2V-1.4Vno data

Compatibility

Information on Pentium D 820 and Core i9-10900K 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
SocketPLGA775FCLGA1200
Power consumption (TDP)95 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 820 and Core i9-10900K. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI-+
FMA-+
AVX-+
vProno data+
Enhanced SpeedStep (EIST)-+
Turbo Boost Technology-2.0
Hyper-Threading Technology-+
Idle States++
Thermal Monitoring-+
SIPP-+
Demand Based Switching-no data
PAE32 Bitno data
Turbo Boost Max 3.0no data+
FSB parity-no data

Security technologies

Pentium D 820 and Core i9-10900K technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB++
Secure Keyno data+
Identity Protection-+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 820 and Core i9-10900K are enumerated here.

VT-d-+
VT-x-+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Core i9-10900K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR4
Maximum memory sizeno data128 GB
Max memory channelsno data2
Maximum memory bandwidthno data45.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel UHD Graphics 630
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data1.2 GHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Pentium D 820 and Core i9-10900K integrated GPUs.

Number of displays supportedno data3

Graphics image quality

Maximum display resolutions supported by Pentium D 820 and Core i9-10900K integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096 x 2160@30Hz
Max resolution over eDPno data4096 x 2304@60Hz
Max resolution over DisplayPortno data4096 x 2304@60Hz

Graphics API support

APIs supported by Pentium D 820 and Core i9-10900K integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Pentium D 820 and Core i9-10900K.

PCIe versionno data3.0
PCI Express lanesno data16

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.

Pentium D 820 0.31
i9-10900K 14.31
+4516%

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.

Pentium D 820 499
i9-10900K 22731
+4455%

Gaming performance

Pros & cons summary


Performance score 0.31 14.31
Physical cores 2 10
Threads 2 20
Chip lithography 90 nm 14 nm
Power consumption (TDP) 95 Watt 125 Watt

Pentium D 820 has 31.6% lower power consumption.

i9-10900K, on the other hand, has a 4516.1% higher aggregate performance score, 400% more physical cores and 900% more threads, and a 542.9% more advanced lithography process.

The Core i9-10900K is our recommended choice as it beats the Pentium D 820 in performance tests.


Should you still have questions on choice between Pentium D 820 and Core i9-10900K, ask them in Comments section, and we shall answer.

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Intel Pentium D 820
Pentium D 820
Intel Core i9-10900K
Core i9-10900K

Similar processor comparisons

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Community ratings

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


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Questions & comments

Here you can ask a question about Pentium D 820 or Core i9-10900K, agree or disagree with our judgements, or report an error or mismatch.