Xeon E5-2643 v4 vs Ryzen 9 3900X

VS

Aggregate performance score

Ryzen 9 3900X
2019
12 cores / 24 threads, 125 Watt
20.53
+192%
Xeon E5-2643 v4
2016
6 cores / 12 threads, 135 Watt
7.04

Ryzen 9 3900X outperforms Xeon E5-2643 v4 by a whopping 192% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 3900X and Xeon E5-2643 v4 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2751006
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation21.711.33
Market segmentDesktop processorServer
SeriesAMD Ryzen 9Intel Xeon E5
Power efficiency15.534.93
Architecture codenameMatisse (Zen 2) (2019−2020)Broadwell (2015−2019)
Release date7 July 2019 (5 years ago)20 June 2016 (8 years ago)
Launch price (MSRP)$499$1,552

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 9 3900X has 1532% better value for money than Xeon E5-2643 v4.

Detailed specifications

Ryzen 9 3900X and Xeon E5-2643 v4 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)6 (Hexa-Core)
Threads2412
Base clock speed3.8 GHz3.4 GHz
Boost clock speed4.6 GHz3.7 GHz
Bus typeno dataQPI
Bus rateno data2 × 9.6 GT/s
Multiplierno data34
L1 cache96K (per core)no data
L2 cache512K (per core)1.5 MB
L3 cache64 MB20 MB
Chip lithography7 nm, 12 nm14 nm
Die sizeno data246.24 mm2
Maximum core temperature95 °C75 °C
Number of transistors19,200 million3200 Million
64 bit support++
Windows 11 compatibility+-
Unlocked multiplier+-

Compatibility

Information on Ryzen 9 3900X and Xeon E5-2643 v4 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)2 (Multiprocessor)
SocketAM4FCLGA2011
Power consumption (TDP)125 Watt135 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900X and Xeon E5-2643 v4. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® AVX2
AES-NI++
AVX++
vProno data+
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSX-+
Idle Statesno data+
Thermal Monitoring-+
Flex Memory Accessno data-
Demand Based Switchingno data+
PAEno data46 Bit
Precision Boost 2+no data

Security technologies

Ryzen 9 3900X and Xeon E5-2643 v4 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDBno data+
Secure Keyno data+
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900X and Xeon E5-2643 v4 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900X and Xeon E5-2643 v4. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Dual-channelDDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400
Maximum memory size128 GB1.5 TB
Max memory channels24
Maximum memory bandwidth51.196 GB/s76.8 GB/s
ECC memory support-+

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900X and Xeon E5-2643 v4.

PCIe versionno data3.0
PCI Express lanesno data40

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
+192%
Xeon E5-2643 v4 7.04

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 32612
+191%
Xeon E5-2643 v4 11190

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 3900X 1710
+40%
Xeon E5-2643 v4 1221

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 3900X 9939
+68.9%
Xeon E5-2643 v4 5886

Gaming performance

Pros & cons summary


Performance score 20.53 7.04
Recency 7 July 2019 20 June 2016
Physical cores 12 6
Threads 24 12
Chip lithography 7 nm 14 nm
Power consumption (TDP) 125 Watt 135 Watt

Ryzen 9 3900X has a 191.6% higher aggregate performance score, an age advantage of 3 years, 100% more physical cores and 100% more threads, a 100% more advanced lithography process, and 8% lower power consumption.

The Ryzen 9 3900X is our recommended choice as it beats the Xeon E5-2643 v4 in performance tests.

Note that Ryzen 9 3900X is a desktop processor while Xeon E5-2643 v4 is a server/workstation one.


Should you still have questions on choice between Ryzen 9 3900X and Xeon E5-2643 v4, ask them in Comments section, and we shall answer.

Vote for your favorite

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AMD Ryzen 9 3900X
Ryzen 9 3900X
Intel Xeon E5-2643 v4
Xeon E5-2643 v4

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Community ratings

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Questions & comments

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