Ryzen 9 9900X vs Ryzen 9 3900X

VS

Aggregate performance score

Ryzen 9 3900X
2019
12 cores / 24 threads, 105 Watt
20.53
Ryzen 9 9900X
2024
12 cores / 24 threads, 120 Watt
34.52
+68.1%

Ryzen 9 9900X outperforms Ryzen 9 3900X by an impressive 68% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 3900X and Ryzen 9 9900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking275109
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation21.7366.82
Market segmentDesktop processorDesktop processor
SeriesAMD Ryzen 9no data
Power efficiency15.5427.22
Architecture codenameMatisse (Zen 2) (2019−2020)Granite Ridge (2024)
Release date7 July 2019 (5 years ago)15 August 2024 (less than a year ago)
Launch price (MSRP)$499$499

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 9 9900X has 208% better value for money than Ryzen 9 3900X.

Detailed specifications

Ryzen 9 3900X and Ryzen 9 9900X 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 cores12 (Dodeca-Core)12 (Dodeca-Core)
Threads2424
Base clock speed3.8 GHz4.4 GHz
Boost clock speed4.6 GHz5.6 GHz
L1 cache768 KB80 KB (per core)
L2 cache6 MB1 MB (per core)
L3 cache64 MB64 MB (shared)
Chip lithography7 nm, 12 nm4 nm
Die sizeno data2x 70.6 mm2
Maximum core temperature95 °C95 °C
Number of transistors19,200 million16,630 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier++

Compatibility

Information on Ryzen 9 3900X and Ryzen 9 9900X 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 configuration1 (Uniprocessor)1
SocketAM4AM5
Power consumption (TDP)105 Watt120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900X and Ryzen 9 9900X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataSMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900X and Ryzen 9 9900X are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900X and Ryzen 9 9900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Dual-channelDDR5
Maximum memory size128 GBno data
Max memory channels2no data
Maximum memory bandwidth51.196 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card-AMD Radeon Graphics

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900X and Ryzen 9 9900X.

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.

Ryzen 9 3900X 20.53
Ryzen 9 9900X 34.52
+68.1%

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.

Ryzen 9 3900X 32613
Ryzen 9 9900X 54839
+68.2%

Geekbench 5.5 Multi-Core

Ryzen 9 3900X 10498
Ryzen 9 9900X 21384
+104%

Blender(-)

Ryzen 9 3900X 162
+67.3%
Ryzen 9 9900X 97

Geekbench 5.5 Single-Core

Ryzen 9 3900X 1250
Ryzen 9 9900X 2544
+104%

7-Zip Single

Ryzen 9 3900X 5316
Ryzen 9 9900X 8020
+50.9%

7-Zip

Ryzen 9 3900X 80935
Ryzen 9 9900X 122724
+51.6%

WebXPRT 3

Ryzen 9 3900X 225
Ryzen 9 9900X 398
+76.9%

Gaming performance

Pros & cons summary


Performance score 20.53 34.52
Recency 7 July 2019 15 August 2024
Chip lithography 7 nm 4 nm
Power consumption (TDP) 105 Watt 120 Watt

Ryzen 9 3900X has 14.3% lower power consumption.

Ryzen 9 9900X, on the other hand, has a 68.1% higher aggregate performance score, an age advantage of 5 years, and a 75% more advanced lithography process.

The Ryzen 9 9900X is our recommended choice as it beats the Ryzen 9 3900X in performance tests.


Should you still have questions on choice between Ryzen 9 3900X and Ryzen 9 9900X, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 3900X
Ryzen 9 3900X
AMD Ryzen 9 9900X
Ryzen 9 9900X

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Community ratings

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Questions & comments

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