Ryzen 9 7950X vs Pentium D 820

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Aggregate performance score

Pentium D 820
2005
2 cores / 2 threads, 95 Watt
0.31
Ryzen 9 7950X
2022
16 cores / 32 threads, 170 Watt
39.46
+12629%

Ryzen 9 7950X outperforms Pentium D 820 by a whopping 12629% based on our aggregate benchmark results.

Primary details

Comparing Pentium D 820 and Ryzen 9 7950X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking310167
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
SeriesPentium Dno data
Power efficiency0.3121.97
Architecture codenameSmithfield (2005)Raphael (Zen 4) (2022)
Release dateMay 2005 (19 years ago)27 September 2022 (2 years ago)

Detailed specifications

Pentium D 820 and Ryzen 9 7950X 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)16 (Hexadeca-Core)
Threads232
Base clock speed2.8 GHz4.5 GHz
Boost clock speed2.8 GHz5.7 GHz
Bus rate800 MHzno data
L1 cache28 KB64K (per core)
L2 cache2 MB1 MB (per core)
L3 cache0 KB64 MB (shared)
Chip lithography90 nm5 nm
Die size206 mm2CCD = 2x 70 sq. mm, I/O = 122 mm2
Maximum core temperature64 °C95 °C
Maximum case temperature (TCase)no data47 °C
Number of transistors169 million13140 Million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+
VID voltage range1.2V-1.4Vno data

Compatibility

Information on Pentium D 820 and Ryzen 9 7950X 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
SocketPLGA775AM5
Power consumption (TDP)95 Watt170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 820 and Ryzen 9 7950X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataCCD = 5 nm, I/O = 6 nm, 0.650 - 1.475 V
AES-NI-+
AVX-+
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
Precision Boost 2no data+

Security technologies

Pentium D 820 and Ryzen 9 7950X 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 Ryzen 9 7950X are enumerated here.

AMD-V-+
VT-d-no data
VT-x-no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and Ryzen 9 7950X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR5-5200

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon Graphics (Ryzen 7000) (400 - 2200 MHz)

Peripherals

Specifications and connection of peripherals supported by Pentium D 820 and Ryzen 9 7950X.

PCIe versionno data5.0
PCI Express lanesno data24

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
Ryzen 9 7950X 39.46
+12629%

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
Ryzen 9 7950X 62681
+12461%

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.

Pentium D 820 1412
Ryzen 9 7950X 21064
+1392%

Gaming performance

Pros & cons summary


Performance score 0.31 39.46
Physical cores 2 16
Threads 2 32
Chip lithography 90 nm 5 nm
Power consumption (TDP) 95 Watt 170 Watt

Pentium D 820 has 78.9% lower power consumption.

Ryzen 9 7950X, on the other hand, has a 12629% higher aggregate performance score, 700% more physical cores and 1500% more threads, and a 1700% more advanced lithography process.

The Ryzen 9 7950X 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 Ryzen 9 7950X, ask them in Comments section, and we shall answer.

Vote for your favorite

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Intel Pentium D 820
Pentium D 820
AMD Ryzen 9 7950X
Ryzen 9 7950X

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

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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4.3 1645 votes

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Questions & comments

Here you can ask a question about Pentium D 820 or Ryzen 9 7950X, agree or disagree with our judgements, or report an error or mismatch.