AMD Ryzen 7 7840S vs Intel Core Ultra 5 135H

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CPU comparison with benchmarks


AMD Ryzen 7 7840S CPU1 vs CPU2 Intel Core Ultra 5 135H
AMD Ryzen 7 7840S Intel Core Ultra 5 135H

CPU comparison

In this CPU comparison, we compare the AMD Ryzen 7 7840S and the Intel Core Ultra 5 135H and use benchmarks to check which processor is faster.

We compare the AMD Ryzen 7 7840S 8 core processor released in Q2/2023 with the Intel Core Ultra 5 135H which has 14 CPU cores and was introduced in Q4/2023.
AMD Ryzen 7 (70) Family Intel Core Ultra 5 (10)
AMD Ryzen 7040 (21) CPU group Intel Core Ultra 100H (5)
6 Generation 1
Phoenix (Zen 4) Architecture Meteor Lake H
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD Ryzen 7 7840S is a 8 core processor with a clock frequency of 3.30 GHz (5.10 GHz). The processor can compute 16 threads at the same time. The Intel Core Ultra 5 135H clocks with 1.70 GHz (4.60 GHz), has 14 CPU cores and can calculate 18 threads in parallel.

AMD Ryzen 7 7840S Characteristic Intel Core Ultra 5 135H
8 Cores 14
16 Threads 18
normal Core architecture hybrid (big.LITTLE)
Yes Hyperthreading Yes
No Overclocking ? No
3.30 GHz (5.10 GHz)
8x Zen 4
A-Core 1.70 GHz (4.60 GHz)
4x Redwood Cove
-- B-Core 1.20 GHz (3.60 GHz)
8x Crestmont
-- C-Core 0.70 GHz (2.50 GHz)
2x Crestmont

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 Ryzen 7 7840S Characteristic Intel Core Ultra 5 135H
-- AI hardware Intel® AI Boost
-- AI specifications Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT)
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

AMD Radeon 780M GPU Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake)
0.80 GHz GPU frequency 0.60 GHz
2.70 GHz GPU (Turbo) 2.20 GHz
3 GPU Generation --
4 nm Technology 5 nm
4 Max. displays 4
12 Compute units 128
768 Shader 1024
Yes Hardware Raytracing Yes
AMD FSR Frame Generation No
32 GB Max. GPU Memory 32 GB
12 DirectX Version 12.2

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.

AMD Radeon 780M GPU Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake)
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode / Encode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode Codec VP9 Decode
Decode Codec VP8 Decode
Decode / Encode Codec AV1 Decode / Encode
Decode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

Up to 256 GB of memory in a maximum of 2 memory channels is supported by the AMD Ryzen 7 7840S, while the Intel Core Ultra 5 135H supports a maximum of 96 GB of memory with a maximum memory bandwidth of 120.0 GB/s enabled.

AMD Ryzen 7 7840S Characteristic Intel Core Ultra 5 135H
DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 Memory LPDDR5X-7500, DDR5-5600
256 GB Max. Memory 96 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
120.0 GB/s Max. Bandwidth 120.0 GB/s
Yes ECC No
8.00 MB L2 Cache 14.00 MB
16.00 MB L3 Cache 18.00 MB
4.0 PCIe version 5.0
20 PCIe lanes 20
39.4 GB/s PCIe Bandwidth 78.8 GB/s

Thermal Management

The AMD Ryzen 7 7840S has a TDP of 15 W. The TDP of the Intel Core Ultra 5 135H is 28 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Ryzen 7 7840S Characteristic Intel Core Ultra 5 135H
15 W TDP (PL1 / PBP) 28 W
-- TDP (PL2) 115 W
28 W TDP up 65 W
-- TDP down 20 W
100 °C Tjunction max. 110 °C

Technical details

The AMD Ryzen 7 7840S has 24.00 MB cache and is manufactured in 4 nm. The cache of Intel Core Ultra 5 135H is at 32.00 MB. The processor is manufactured in 7 nm.

AMD Ryzen 7 7840S Characteristic Intel Core Ultra 5 135H
4 nm Technology 7 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 ISA extensions SSE4.1, SSE4.2, AVX2
FP8 Socket BGA 2049
AMD-V, SVM Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 11, Linux
Q2/2023 Release date Q4/2023
-- Release price --
show more data show more data


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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 Ryzen 7 7840S AMD Ryzen 7 7840S
AMD Radeon 780M @ 2.70 GHz
4201 (96%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) @ 2.20 GHz
4361 (100%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 5.10 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
100 (100%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 5.10 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
847 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 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 Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 5.10 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
1692 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 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.
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 3.30 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
14771 (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.
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 5.10 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
1667 (100%)

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 Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 3.30 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
10765 (100%)

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 Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 5.10 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
2247 (100%)

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 Ryzen 7 7840S AMD Ryzen 7 7840S
8C 16T @ 3.30 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
10239 (100%)

CPU performance per watt (efficiency)

Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
AMD Ryzen 7 7840S AMD Ryzen 7 7840S
3.30 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14,771 CB R23 MC @ 66 W
224 (100%)

Devices using this processor

AMD Ryzen 7 7840S Intel Core Ultra 5 135H
Unknown Unknown

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