i9-7900X vs Ryzen 9 3900

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Aggregate performance score

Ryzen 9 3900
2019
12 cores / 24 threads, 65 Watt
19.98
+46.2%

Ryzen 9 3900 outperforms i9-7900X by a considerable 46% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 3900 and Core i9-7900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking282545
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data3.20
Market segmentDesktop processorDesktop processor
SeriesAMD Matisse (Ryzen 3000 Desktop)Core i9 (Desktop)
Architecture codenameMatisse (Zen 2) (2019−2020)Skylake (server) (2017−2019)
Release date9 October 2019 (4 years ago)30 May 2017 (7 years ago)
Launch price (MSRP)no data$999

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 3900 and Core i9-7900X 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)10 (Deca-Core)
Threads2420
Base clock speed3.1 GHz3.3 GHz
Boost clock speed4.3 GHz4.5 GHz
Bus typeno dataDMI 3.0
Bus rateno data4 × 8 GT/s
Multiplierno data33
L1 cache768 KB640 KB
L2 cache6 MB10 MB
L3 cache64 MB13.75 MB
Chip lithography7 nm, 12 nm14 nm
Die size2x 74 mm2no data
Maximum core temperatureno data95 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors7,600 millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier++

Compatibility

Information on Ryzen 9 3900 and Core i9-7900X 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 configuration11 (Uniprocessor)
SocketAM4 (1331)Socket R4
Power consumption (TDP)65 Watt140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900 and Core i9-7900X. You'll probably need this information if you require some particular technology.

Instruction set extensions86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI++
AVX++
vProno data+
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSX-+
Turbo Boost Max 3.0no data+
Statusno dataDiscontinued
Precision Boost 2+no data

Security technologies

Ryzen 9 3900 and Core i9-7900X technologies aimed at improving security, for example, by protecting against hacks.

EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900 and Core i9-7900X are enumerated here.

AMD-V++
VT-dno data+
VT-xno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900 and Core i9-7900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-3200DDR4
Maximum memory size128 GB128 GB
Max memory channels24
Maximum memory bandwidth51.196 GB/s85.33 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AN/A

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900 and Core i9-7900X.

PCIe version4.03.0
PCI Express lanes2444

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 3900 19.98
+46.2%
i9-7900X 13.67

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 3900 30813
+46.1%
i9-7900X 21087

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.

Ryzen 9 3900 1677
+16.5%
i9-7900X 1440

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.

Ryzen 9 3900 9582
+8.8%
i9-7900X 8805

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Ryzen 9 3900 5700
i9-7900X 7287
+27.8%

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Ryzen 9 3900 44191
i9-7900X 49738
+12.6%

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.

Ryzen 9 3900 13817
+9%
i9-7900X 12678

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

Ryzen 9 3900 31
+29.6%
i9-7900X 24

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Ryzen 9 3900 2804
+30.5%
i9-7900X 2148

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

Ryzen 9 3900 197
+2.2%
i9-7900X 193

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

Ryzen 9 3900 2.22
+0.9%
i9-7900X 2.2

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

Ryzen 9 3900 10.4
i9-7900X 12.1
+16.3%

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

Ryzen 9 3900 7145
+20.7%
i9-7900X 5918

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

Ryzen 9 3900 132
+9%
i9-7900X 121

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

Ryzen 9 3900 256
+17.7%
i9-7900X 217

Geekbench 4.0 64-bit multi-core

Ryzen 9 3900 41058
+49.1%
i9-7900X 27533

Geekbench 4.0 64-bit single-core

Ryzen 9 3900 5482
+9.9%
i9-7900X 4987

Gaming performance

Pros & cons summary


Performance score 19.98 13.67
Recency 9 October 2019 30 May 2017
Physical cores 12 10
Threads 24 20
Chip lithography 7 nm 14 nm
Power consumption (TDP) 65 Watt 140 Watt

Ryzen 9 3900 has a 46.2% higher aggregate performance score, an age advantage of 2 years, 20% more physical cores and 20% more threads, a 100% more advanced lithography process, and 115.4% lower power consumption.

The Ryzen 9 3900 is our recommended choice as it beats the Core i9-7900X in performance tests.


Should you still have questions on choice between Ryzen 9 3900 and Core i9-7900X, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 3900
Ryzen 9 3900
Intel Core i9-7900X
Core i9-7900X

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Community ratings

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