Ryzen 9 3900XT vs Ryzen 9 3900

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Aggregate performance score

Ryzen 9 3900
2019
12 cores / 24 threads, 65 Watt
19.34
Ryzen 9 3900XT
2020
12 cores / 24 threads, 105 Watt
20.56
+6.3%

Ryzen 9 3900XT outperforms Ryzen 9 3900 by a small 6% based on our aggregate benchmark results.

Primary details

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

Place in the ranking300274
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation20.7426.06
Market segmentDesktop processorDesktop processor
SeriesAMD Matisse (Ryzen 3000 Desktop)AMD Ryzen 9
Power efficiency28.1618.53
Architecture codenameMatisse (Zen 2) (2019−2020)Matisse 2 (2020)
Release date24 September 2019 (5 years ago)16 June 2020 (4 years ago)
Launch price (MSRP)$499$499

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 9 3900XT has 26% better value for money than Ryzen 9 3900.

Detailed specifications

Ryzen 9 3900 and Ryzen 9 3900XT 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 speed3.1 GHz3.8 GHz
Boost clock speed4.3 GHz4.7 GHz
L1 cache768 KB768 KB
L2 cache6 MB6 MB
L3 cache64 MB64 MB
Chip lithography7 nm, 12 nm7 nm, 12 nm
Die size2x 74 mm274 mm2
Maximum case temperature (TCase)no data95 °C
Number of transistors7,600 million3,800 million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier++

Compatibility

Information on Ryzen 9 3900 and Ryzen 9 3900XT 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
SocketAM4AM4
Power consumption (TDP)65 Watt105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900 and Ryzen 9 3900XT. 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 2no data
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

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

AMD-V++

Memory specs

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

Supported memory typesDDR4-3200DDR4-3200
Maximum memory size128 GB128 GB
Max memory channels22
Maximum memory bandwidth51.196 GB/s51.196 GB/s
ECC memory support-+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/A-

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900 and Ryzen 9 3900XT.

PCIe version4.04.0
PCI Express lanes24no 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.

Ryzen 9 3900 19.34
Ryzen 9 3900XT 20.56
+6.3%

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 30722
Ryzen 9 3900XT 32660
+6.3%

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 1678
Ryzen 9 3900XT 1741
+3.8%

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.

Ryzen 9 3900 9543
Ryzen 9 3900XT 9909
+3.8%

Gaming performance

Pros & cons summary


Performance score 19.34 20.56
Recency 24 September 2019 16 June 2020
Power consumption (TDP) 65 Watt 105 Watt

Ryzen 9 3900 has 61.5% lower power consumption.

Ryzen 9 3900XT, on the other hand, has a 6.3% higher aggregate performance score, and an age advantage of 8 months.

Given the minimal performance differences, no clear winner can be declared between Ryzen 9 3900 and Ryzen 9 3900XT.


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

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AMD Ryzen 9 3900
Ryzen 9 3900
AMD Ryzen 9 3900XT
Ryzen 9 3900XT

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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

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