EPYC 7643 vs EPYC 7443

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Aggregate performance score

EPYC 7443
2021
24 cores / 48 threads, 200 Watt
35.63
EPYC 7643
2021
48 cores / 96 threads, 225 Watt
47.88
+34.4%

EPYC 7643 outperforms EPYC 7443 by a substantial 34% based on our aggregate benchmark results.

Primary details

Comparing EPYC 7443 and EPYC 7643 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking10538
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation15.956.71
Market segmentServerServer
SeriesAMD EPYCAMD EPYC
Power efficiency16.8620.14
Architecture codenameMilan (2021−2023)Milan (2021−2023)
Release date12 January 2021 (3 years ago)12 January 2021 (3 years ago)
Launch price (MSRP)$2,010$4,995

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7443 has 138% better value for money than EPYC 7643.

Detailed specifications

EPYC 7443 and EPYC 7643 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 cores24 (Tetracosa-Core)48 (Octatetraconta-Core)
Threads4896
Base clock speed2.85 GHz2.3 GHz
Boost clock speed4 GHz3.6 GHz
Multiplier28.523
L1 cache1536 KB3 MB
L2 cache12 MB24 MB
L3 cache128 MB (shared)256 MB (shared)
Chip lithography7 nm+7 nm+
Die size4x 81 mm28x 81 mm2
Number of transistors16,600 million33,200 million
64 bit support++
Windows 11 compatibility++

Compatibility

Information on EPYC 7443 and EPYC 7643 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 configuration22
SocketSP3SP3
Power consumption (TDP)200 Watt225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7443 and EPYC 7643. You'll probably need this information if you require some particular technology.

AES-NI++
AVX++

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7443 and EPYC 7643 are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7443 and EPYC 7643. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-3200DDR4-3200
Maximum memory size4 TiB4 TiB
Maximum memory bandwidth204.795 GB/s204.795 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AN/A

Peripherals

Specifications and connection of peripherals supported by EPYC 7443 and EPYC 7643.

PCIe version4.04.0
PCI Express lanes128128

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.

EPYC 7443 35.63
EPYC 7643 47.88
+34.4%

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.

EPYC 7443 56601
EPYC 7643 76050
+34.4%

Gaming performance

Pros & cons summary


Performance score 35.63 47.88
Physical cores 24 48
Threads 48 96
Power consumption (TDP) 200 Watt 225 Watt

EPYC 7443 has 12.5% lower power consumption.

EPYC 7643, on the other hand, has a 34.4% higher aggregate performance score, and 100% more physical cores and 100% more threads.

The EPYC 7643 is our recommended choice as it beats the EPYC 7443 in performance tests.


Should you still have questions on choice between EPYC 7443 and EPYC 7643, ask them in Comments section, and we shall answer.

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AMD EPYC 7443
EPYC 7443
AMD EPYC 7643
EPYC 7643

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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 EPYC 7443 or EPYC 7643, agree or disagree with our judgements, or report an error or mismatch.