Intel Core Ultra 5 135H vs Valve Steam Deck (AMD Custom APU 0405)

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CPU comparison with benchmarks


Intel Core Ultra 5 135H CPU1 vs CPU2 Valve Steam Deck (AMD Custom APU 0405)
Intel Core Ultra 5 135H Valve Steam Deck (AMD Custom APU 0405)

CPU comparison

In this CPU comparison, we compare the Intel Core Ultra 5 135H and the Valve Steam Deck (AMD Custom APU 0405) and use benchmarks to check which processor is faster.

We compare the Intel Core Ultra 5 135H 14 core processor released in Q4/2023 with the Valve Steam Deck (AMD Custom APU 0405) which has 4 CPU cores and was introduced in Q4/2021.
Intel Core Ultra 5 (10) Family AMD Ryzen 5 (86)
Intel Core Ultra 100H (5) CPU group AMD Aerith (Steam Deck) (1)
1 Generation 3
Meteor Lake H Architecture Aerith (Zen 2)
Mobile Segment Mobile
-- Predecessor --
-- Successor Valve Steam Deck (2023 Refresh)

CPU Cores and Base Frequency

The Intel Core Ultra 5 135H is a 14 core processor with a clock frequency of 1.70 GHz (4.60 GHz). The processor can compute 18 threads at the same time. The Valve Steam Deck (AMD Custom APU 0405) clocks with 2.40 GHz (3.50 GHz), has 4 CPU cores and can calculate 8 threads in parallel.

Intel Core Ultra 5 135H Characteristic Valve Steam Deck (AMD Custom APU 0405)
14 Cores 4
18 Threads 8
hybrid (big.LITTLE) Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
1.70 GHz (4.60 GHz)
4x Redwood Cove
A-Core 2.40 GHz (3.50 GHz)
1.20 GHz (3.60 GHz)
8x Crestmont
B-Core --
0.70 GHz (2.50 GHz)
2x Crestmont
C-Core --

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 Core Ultra 5 135H Characteristic Valve Steam Deck (AMD Custom APU 0405)
Intel® AI Boost AI hardware --
Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT) AI specifications --
-- 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.

Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) GPU AMD Custom Radeon Graphics (Steam Deck)
0.60 GHz GPU frequency 1.00 GHz
2.20 GHz GPU (Turbo) 1.60 GHz
-- GPU Generation --
5 nm Technology 7 nm
4 Max. displays 2
128 Compute units 8
1024 Shader 512
Yes Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory 8 GB
12.2 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.

Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) GPU AMD Custom Radeon Graphics (Steam Deck)
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 / Encode
Decode Codec VP8 Decode / Encode
Decode / Encode Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

Up to 96 GB of memory in a maximum of 2 memory channels is supported by the Intel Core Ultra 5 135H, while the Valve Steam Deck (AMD Custom APU 0405) supports a maximum of 16 GB of memory with a maximum memory bandwidth of 88.0 GB/s enabled.

Intel Core Ultra 5 135H Characteristic Valve Steam Deck (AMD Custom APU 0405)
LPDDR5X-7500, DDR5-5600 Memory LPDDR5-5500
96 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 4 (Quad Channel)
120.0 GB/s Max. Bandwidth 88.0 GB/s
No ECC No
14.00 MB L2 Cache 2.00 MB
18.00 MB L3 Cache 4.00 MB
5.0 PCIe version 3.0
20 PCIe lanes 8
78.8 GB/s PCIe Bandwidth 7.9 GB/s

Thermal Management

The Intel Core Ultra 5 135H has a TDP of 28 W. The TDP of the Valve Steam Deck (AMD Custom APU 0405) is 15 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core Ultra 5 135H Characteristic Valve Steam Deck (AMD Custom APU 0405)
28 W TDP (PL1 / PBP) 15 W
115 W TDP (PL2) --
65 W TDP up --
20 W TDP down 4 W
110 °C Tjunction max. 100 °C

Technical details

The Intel Core Ultra 5 135H has 32.00 MB cache and is manufactured in 7 nm. The cache of Valve Steam Deck (AMD Custom APU 0405) is at 6.00 MB. The processor is manufactured in 7 nm.

Intel Core Ultra 5 135H Characteristic Valve Steam Deck (AMD Custom APU 0405)
7 nm Technology 7 nm
Chiplet Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
BGA 2049 Socket FF3
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 11, Linux Operating systems SteamOS (Arch Linux)
Q4/2023 Release date Q4/2021
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Core Ultra 5 135H to help other visitors make their purchasing decisions. The average rating is 4.5 stars (2 ratings). Rate now:
Here you can rate the Valve Steam Deck (AMD Custom APU 0405) to help other visitors make their purchasing decisions. The average rating is 3.8 stars (5 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 4 CPU benchmarks
Intel Core Ultra 5 135H (100%)
Valve Steam Deck (AMD Custom APU 0405) (56%)
⌀ Multi core performance in 4 CPU benchmarks
Intel Core Ultra 5 135H (100%)
Valve Steam Deck (AMD Custom APU 0405) (35%)

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.
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
100 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz
57 (57%)

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.
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
847 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz
275 (32%)

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.
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
1692 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz
975 (58%)

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.
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
14771 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz
4359 (30%)

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 Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
1667 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz
849 (51%)

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 Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
10765 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz
3592 (33%)

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 Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
2247 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 3.50 GHz
1278 (57%)

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 Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
10239 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
4C 8T @ 2.80 GHz
4365 (43%)

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 Core Ultra 5 135H Intel Core Ultra 5 135H
Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) @ 2.20 GHz
4361 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
AMD Custom Radeon Graphics (Steam Deck) @ 1.60 GHz
1638 (38%)

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.
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14,771 CB R23 MC @ 66 W
224 (100%)
Valve Steam Deck (AMD Custom APU 0405) Valve Steam Deck (AMD Custom APU 0405)
2.40 GHz
0 (0%)

Devices using this processor

Intel Core Ultra 5 135H Valve Steam Deck (AMD Custom APU 0405)
Unknown Valve Steam Deck

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