AMD EPYC 7402 vs AMD Ryzen 7 7840S

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CPU comparison with benchmarks


AMD EPYC 7402 CPU1 vs CPU2 AMD Ryzen 7 7840S
AMD EPYC 7402 AMD Ryzen 7 7840S

CPU comparison

AMD EPYC 7402 or AMD Ryzen 7 7840S - 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 AMD EPYC 7402 has 24 cores with 48 threads and clocks with a maximum frequency of 3.35 GHz. Up to GB of memory is supported in 8 memory channels. The AMD EPYC 7402 was released in Q3/2019.

The AMD Ryzen 7 7840S has 8 cores with 16 threads and clocks with a maximum frequency of 5.10 GHz. The CPU supports up to 256 GB of memory in 2 memory channels. The AMD Ryzen 7 7840S was released in Q2/2023.
AMD EPYC (129) Family AMD Ryzen 7 (70)
AMD EPYC 7002 (24) CPU group AMD Ryzen 7040 (21)
2 Generation 6
Rome (Zen 2) Architecture Phoenix (Zen 4)
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD EPYC 7402 has 24 CPU cores and can calculate 48 threads in parallel. The clock frequency of the AMD EPYC 7402 is 2.80 GHz (3.35 GHz) while the AMD Ryzen 7 7840S has 8 CPU cores and 16 threads can calculate simultaneously. The clock frequency of the AMD Ryzen 7 7840S is at 3.30 GHz (5.10 GHz).

AMD EPYC 7402 Characteristic AMD Ryzen 7 7840S
24 Cores 8
48 Threads 16
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
2.80 GHz Frequency 3.30 GHz
3.35 GHz Turbo Frequency (1 Core) 5.10 GHz
3.20 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.

AMD EPYC 7402 Characteristic AMD Ryzen 7 7840S
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The AMD EPYC 7402 or AMD Ryzen 7 7840S 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 AMD Radeon 780M
GPU frequency 0.80 GHz
-- GPU (Turbo) 2.70 GHz
-- GPU Generation 3
Technology 4 nm
Max. displays 4
-- Compute units 12
-- Shader 768
No Hardware Raytracing Yes
No Frame Generation AMD FSR
-- Max. GPU Memory 32 GB
-- DirectX Version 12

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 AMD Radeon 780M
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
No Codec h264 Decode / Encode
No Codec VP9 Decode
No Codec VP8 Decode
No Codec AV1 Decode / Encode
No Codec AVC Decode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

The AMD EPYC 7402 can use up to GB of memory in 8 memory channels. The maximum memory bandwidth is 51.2 GB/s. The AMD Ryzen 7 7840S supports up to 256 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 120.0 GB/s.

AMD EPYC 7402 Characteristic AMD Ryzen 7 7840S
DDR4-3200 Memory DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500
Max. Memory 256 GB
8 (Octa Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 120.0 GB/s
Yes ECC Yes
-- L2 Cache 8.00 MB
128.00 MB L3 Cache 16.00 MB
4.0 PCIe version 4.0
128 PCIe lanes 20
252.0 GB/s PCIe Bandwidth 39.4 GB/s

Thermal Management

The thermal design power (TDP for short) of the AMD EPYC 7402 is 180 W, while the AMD Ryzen 7 7840S has a TDP of 15 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD EPYC 7402 Characteristic AMD Ryzen 7 7840S
180 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
-- TDP up 28 W
-- TDP down --
-- Tjunction max. 100 °C

Technical details

The AMD EPYC 7402 is manufactured in 7 nm and has 128.00 MB cache. The AMD Ryzen 7 7840S is manufactured in 4 nm and has a 24.00 MB cache.

AMD EPYC 7402 Characteristic AMD Ryzen 7 7840S
7 nm Technology 4 nm
Chiplet Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
SP3 Socket FP8
AMD-V, SVM Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Windows 11, Linux
Q3/2019 Release date Q2/2023
2900 $ Release price --
show more data show more data


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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.
AMD EPYC 7402 AMD EPYC 7402
24C 48T @ 3.35 GHz
1055 (100%)
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 5.10 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.
AMD EPYC 7402 AMD EPYC 7402
24C 48T @ 3.20 GHz
21494 (100%)
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 3.30 GHz
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.
AMD EPYC 7402 AMD EPYC 7402
24C 48T @ 3.35 GHz
1299 (100%)
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 5.10 GHz
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.
AMD EPYC 7402 AMD EPYC 7402
24C 48T @ 3.20 GHz
12622 (100%)
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 3.30 GHz
0 (0%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 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.
AMD EPYC 7402 AMD EPYC 7402
24C 48T @ 3.35 GHz
391 (100%)
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 5.10 GHz
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.
AMD EPYC 7402 AMD EPYC 7402
@ 0.00 GHz
0 (0%)
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
AMD Radeon 780M @ 2.70 GHz
4201 (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.
AMD EPYC 7402 AMD EPYC 7402
24C 48T @ 3.20 GHz
47664 (100%)
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 3.30 GHz
0 (0%)

Devices using this processor

AMD EPYC 7402 AMD Ryzen 7 7840S
Unknown Unknown

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