Ryzen 9 3900X vs i9-9920X

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Aggregate performance score

Core i9-9920X
2018
12 cores / 24 threads, 165 Watt
15.84
Ryzen 9 3900X
2019
12 cores / 24 threads, 125 Watt
20.53
+29.6%

Ryzen 9 3900X outperforms Core i9-9920X by a substantial 30% based on our aggregate benchmark results.

Primary details

Comparing Core i9-9920X and Ryzen 9 3900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking430275
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation5.2321.70
Market segmentDesktop processorDesktop processor
SeriesIntel Core i9AMD Ryzen 9
Power efficiency9.0915.54
Architecture codenameSkylake (server) (2017−2018)Matisse (Zen 2) (2019−2020)
Release date19 October 2018 (6 years ago)7 July 2019 (5 years ago)
Launch price (MSRP)$1,189$499

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 9 3900X has 315% better value for money than i9-9920X.

Detailed specifications

Core i9-9920X and Ryzen 9 3900X 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 speed3.5 GHz3.8 GHz
Boost clock speed4.5 GHz4.6 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/sno data
Multiplier35no data
L1 cache64 KB (per core)96K (per core)
L2 cache1 MB (per core)512K (per core)
L3 cache19.25 MB (shared)64 MB
Chip lithography14 nm7 nm, 12 nm
Die size484 mm2no data
Maximum core temperature92 °C95 °C
Maximum case temperature (TCase)72 °Cno data
Number of transistorsno data19,200 million
64 bit support++
Windows 11 compatibility++
Unlocked multiplier++

Compatibility

Information on Core i9-9920X and Ryzen 9 3900X 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 (Uniprocessor)
SocketFCLGA2066AM4
Power consumption (TDP)165 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9920X and Ryzen 9 3900X. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512no data
AES-NI++
AVX++
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
TSX+-
Turbo Boost Max 3.0+no data
Precision Boost 2no data+

Security technologies

Core i9-9920X and Ryzen 9 3900X technologies aimed at improving security, for example, by protecting against hacks.

EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9920X and Ryzen 9 3900X 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 Core i9-9920X and Ryzen 9 3900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2666DDR4 Dual-channel
Maximum memory size128 GB128 GB
Max memory channels42
Maximum memory bandwidth85.33 GB/s51.196 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/A-

Peripherals

Specifications and connection of peripherals supported by Core i9-9920X and Ryzen 9 3900X.

PCIe version3.0no data
PCI Express lanes44no 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.


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.

i9-9920X 15.84
Ryzen 9 3900X 20.53
+29.6%

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.

i9-9920X 25163
Ryzen 9 3900X 32612
+29.6%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i9-9920X 1426
Ryzen 9 3900X 1709
+19.8%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i9-9920X 9638
Ryzen 9 3900X 9938
+3.1%

Gaming performance

Pros & cons summary


Performance score 15.84 20.53
Recency 19 October 2018 7 July 2019
Chip lithography 14 nm 7 nm
Power consumption (TDP) 165 Watt 125 Watt

Ryzen 9 3900X has a 29.6% higher aggregate performance score, an age advantage of 8 months, a 100% more advanced lithography process, and 32% lower power consumption.

The Ryzen 9 3900X is our recommended choice as it beats the Core i9-9920X in performance tests.


Should you still have questions on choice between Core i9-9920X and Ryzen 9 3900X, ask them in Comments section, and we shall answer.

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Intel Core i9-9920X
Core i9-9920X
AMD Ryzen 9 3900X
Ryzen 9 3900X

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 Core i9-9920X or Ryzen 9 3900X, agree or disagree with our judgements, or report an error or mismatch.