Intel Atom x6425E vs AMD EPYC 9655

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Note: The information shown below is based on a pre-sample. Technical details or benchmark results may be different in the final version of this processor.

CPU comparison with benchmarks


Intel Atom x6425E CPU1 vs CPU2 AMD EPYC 9655
Intel Atom x6425E AMD EPYC 9655

CPU comparison

Intel Atom x6425E or AMD EPYC 9655 - 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 x6425E has 4 cores with 4 threads and clocks with a maximum frequency of 3.00 GHz. Up to 32 GB of memory is supported in 4 memory channels. The Intel Atom x6425E was released in Q1/2021.

The AMD EPYC 9655 has 96 cores with 192 threads and clocks with a maximum frequency of 2.70 GHz. The CPU supports up to 6144 GB of memory in 12 memory channels. The AMD EPYC 9655 was released in Q4/2024.
Intel Atom (108) Family AMD EPYC (129)
Intel Atom x6000 (10) CPU group AMD EPYC 9005 (21)
6 Generation 5
Elkhart Lake Architecture Turin (Zen 5 / Zen 5c)
Mobile Segment Desktop / Server
-- Predecessor AMD EPYC 9654
Intel Atom x7425E Successor --

CPU Cores and Base Frequency

The Intel Atom x6425E is a 4 core processor with a clock frequency of 2.00 GHz (3.00 GHz). The AMD EPYC 9655 has 96 CPU cores with a clock frequency of 2.70 GHz.
Intel Atom x6425E Characteristic AMD EPYC 9655
4 Cores 96
4 Threads 192
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
2.00 GHz Frequency 2.70 GHz
3.00 GHz Turbo Frequency (1 Core) --
2.70 GHz Turbo Frequency (All Cores) --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.
Intel Atom x6425E Characteristic AMD EPYC 9655
-- AI hardware --
-- AI specifications --

Internal Graphics

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.
Intel UHD Graphics 10th Gen (32 EU) GPU no iGPU
0.50 GHz GPU frequency --
0.75 GHz GPU (Turbo) --
11 GPU Generation --
14 nm Technology
3 Max. displays
32 Compute units --
256 Shader --
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory --
12 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.
Intel UHD Graphics 10th Gen (32 EU) GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode / Encode Codec VP9 No
Decode / Encode Codec VP8 No
Decode Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The Intel Atom x6425E supports a maximum of 32 GB of memory in 4 memory channels. The AMD EPYC 9655 can connect up to 6144 GB of memory in 12 memory channels.
Intel Atom x6425E Characteristic AMD EPYC 9655
LPDDR4X-3733, DDR4-3200 Memory DDR5-6000
32 GB Max. Memory 6144 GB
4 (Quad Channel) Memory channels 12
119.2 GB/s Max. Bandwidth 480.0 GB/s
Yes ECC Yes
1.50 MB L2 Cache --
-- L3 Cache 384.00 MB
3.0 PCIe version 5.0
8 PCIe lanes 128
7.9 GB/s PCIe Bandwidth 504.1 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Atom x6425E has a TDP of 12 W, that of the AMD EPYC 9655 is 400 W.
Intel Atom x6425E Characteristic AMD EPYC 9655
12 W TDP (PL1 / PBP) 400 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
105 °C Tjunction max. 100 °C

Technical details

The Intel Atom x6425E has a 1.50 MB cache, while the AMD EPYC 9655 cache has a total of 384.00 MB.
Intel Atom x6425E Characteristic AMD EPYC 9655
10 nm Technology 4 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4.2, AVX2, AVX-512, BFLOAT16, VNNI
BGA 1493 Socket SP5
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Operating systems Windows Server 2022, Linux, Windows 11
Q1/2021 Release date Q4/2024
56 $ Release price --
show more data show more data


Rate these processors

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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 x6425E Intel Atom x6425E
4C 4T @ 3.00 GHz
676 (100%)
AMD EPYC 9655 AMD EPYC 9655
96C 192T @ 2.70 GHzNot verified
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 x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
2055 (100%)
AMD EPYC 9655 AMD EPYC 9655
96C 192T @ 2.70 GHzNot verified
0 (0%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 3.00 GHz
539 (100%)
AMD EPYC 9655 AMD EPYC 9655
96C 192T @ 2.70 GHzNot verified
0 (0%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
1434 (100%)
AMD EPYC 9655 AMD EPYC 9655
96C 192T @ 2.70 GHzNot verified
0 (0%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Atom x6425E Intel Atom x6425E
Intel UHD Graphics 10th Gen (32 EU) @ 0.75 GHz
400 (100%)
AMD EPYC 9655 AMD EPYC 9655
@ 0.00 GHzNot verified
0 (0%)

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 x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
3885 (100%)
AMD EPYC 9655 AMD EPYC 9655
96C 192T @ 2.70 GHzNot verified
0 (0%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 3.00 GHz
114 (100%)
AMD EPYC 9655 AMD EPYC 9655
96C 192T @ 2.70 GHzNot verified
0 (0%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Atom x6425E Intel Atom x6425E
4C 4T @ 2.70 GHz
335 (100%)
AMD EPYC 9655 AMD EPYC 9655
96C 192T @ 2.70 GHzNot verified
0 (0%)

Devices using this processor
Intel Atom x6425E AMD EPYC 9655
Unknown Unknown

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