Intel Atom C3958 vs AMD EPYC Embedded 3451

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CPU comparison with benchmarks


Intel Atom C3958 CPU1 vs CPU2 AMD EPYC Embedded 3451
Intel Atom C3958 AMD EPYC Embedded 3451

CPU comparison

Intel Atom C3958 or AMD EPYC Embedded 3451 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Atom C3958 has 16 cores with 16 threads and clocks with a maximum frequency of 2.00 GHz. Up to 256 GB of memory is supported in 2 memory channels. The Intel Atom C3958 was released in Q3/2017.

The AMD EPYC Embedded 3451 has 16 cores with 32 threads and clocks with a maximum frequency of 3.00 GHz. The CPU supports up to 1024 GB of memory in 4 memory channels. The AMD EPYC Embedded 3451 was released in Q1/2018.
Intel Atom (108) Family AMD EPYC (129)
Intel Atom C3000 (20) CPU group AMD EPYC Embedded 3000 (7)
5 Generation 1
Denverton Architecture Snowy Owl (Zen)
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Atom C3958 has 16 CPU cores and can calculate 16 threads in parallel. The clock frequency of the Intel Atom C3958 is 2.00 GHz while the AMD EPYC Embedded 3451 has 16 CPU cores and 32 threads can calculate simultaneously. The clock frequency of the AMD EPYC Embedded 3451 is at 2.14 GHz (3.00 GHz).

Intel Atom C3958 Characteristic AMD EPYC Embedded 3451
16 Cores 16
16 Threads 32
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? Yes
2.00 GHz Frequency 2.14 GHz
-- Turbo Frequency (1 Core) 3.00 GHz
-- Turbo Frequency (All Cores) --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Intel Atom C3958 Characteristic AMD EPYC Embedded 3451
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The Intel Atom C3958 or AMD EPYC Embedded 3451 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

no iGPU GPU no iGPU
GPU frequency --
-- GPU (Turbo) --
-- GPU Generation --
Technology
Max. displays
-- Compute units --
-- Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
-- DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

no iGPU GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The Intel Atom C3958 can use up to 256 GB of memory in 2 memory channels. The maximum memory bandwidth is 38.4 GB/s. The AMD EPYC Embedded 3451 supports up to 1024 GB of memory in 4 memory channels and achieves a memory bandwidth of up to 85.3 GB/s.

Intel Atom C3958 Characteristic AMD EPYC Embedded 3451
DDR4-2400 Memory DDR4-2666
256 GB Max. Memory 1024 GB
2 (Dual Channel) Memory channels 4 (Quad Channel)
38.4 GB/s Max. Bandwidth 85.3 GB/s
Yes ECC Yes
16.00 MB L2 Cache 8.00 MB
-- L3 Cache 32.00 MB
3.0 PCIe version 3.0
16 PCIe lanes 64
15.8 GB/s PCIe Bandwidth 63.0 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Atom C3958 is 31 W, while the AMD EPYC Embedded 3451 has a TDP of 100 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Atom C3958 Characteristic AMD EPYC Embedded 3451
31 W TDP (PL1 / PBP) 100 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 80 W
100 °C Tjunction max. 105 °C

Technical details

The Intel Atom C3958 is manufactured in 14 nm and has 16.00 MB cache. The AMD EPYC Embedded 3451 is manufactured in 14 nm and has a 40.00 MB cache.

Intel Atom C3958 Characteristic AMD EPYC Embedded 3451
14 nm Technology 14 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
BGA 1310 Socket SP4
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q3/2017 Release date Q1/2018
449 $ Release price --
show more data show more data


Rate these processors

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Average performance in benchmarks

⌀ Single core performance in 0 CPU benchmarks
Intel Atom C3958 (0%)
AMD EPYC Embedded 3451 (0%)
⌀ Multi core performance in 1 CPU benchmarks
Intel Atom C3958 (20%)
AMD EPYC Embedded 3451 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Atom C3958 Intel Atom C3958
16C 16T @ 2.00 GHz
4281 (20%)
AMD EPYC Embedded 3451 AMD EPYC Embedded 3451
16C 32T @ 2.14 GHz
21287 (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Atom C3958 Intel Atom C3958
16C 16T @ 2.00 GHz
332 (100%)
AMD EPYC Embedded 3451 AMD EPYC Embedded 3451
16C 32T @ 3.00 GHz
0 (0%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Atom C3958 Intel Atom C3958
16C 16T @ 2.00 GHz
4134 (100%)
AMD EPYC Embedded 3451 AMD EPYC Embedded 3451
16C 32T @ 2.14 GHz
0 (0%)

Devices using this processor

Intel Atom C3958 AMD EPYC Embedded 3451
Unknown Unknown

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