Intel Core Ultra 5 135U vs AMD Ryzen 9 3900X

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CPU comparison with benchmarks


Intel Core Ultra 5 135U CPU1 vs CPU2 AMD Ryzen 9 3900X
Intel Core Ultra 5 135U AMD Ryzen 9 3900X

CPU comparison

Intel Core Ultra 5 135U or AMD Ryzen 9 3900X - 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 Core Ultra 5 135U has 12 cores with 14 threads and clocks with a maximum frequency of 4.40 GHz. Up to 96 GB of memory is supported in 2 memory channels. The Intel Core Ultra 5 135U was released in Q4/2023.

The AMD Ryzen 9 3900X has 12 cores with 24 threads and clocks with a maximum frequency of 4.60 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The AMD Ryzen 9 3900X was released in Q3/2019.
Intel Core Ultra 5 (10) Family AMD Ryzen 9 (40)
Intel Core Ultra 100U (7) CPU group AMD Ryzen 3000 (15)
1 Generation 3
Meteor Lake U Architecture Matisse (Zen 2)
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor AMD Ryzen 9 5900X

CPU Cores and Base Frequency

The Intel Core Ultra 5 135U is a 12 core processor with a clock frequency of 1.60 GHz (4.40 GHz). The AMD Ryzen 9 3900X has 12 CPU cores with a clock frequency of 3.80 GHz (4.60 GHz).

Intel Core Ultra 5 135U Characteristic AMD Ryzen 9 3900X
12 Cores 12
14 Threads 24
hybrid (big.LITTLE) Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? Yes
1.60 GHz (4.40 GHz)
2x Redwood Cove
A-Core 3.80 GHz (4.60 GHz)
1.10 GHz (3.60 GHz)
8x Crestmont
B-Core --
0.70 GHz (2.10 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 135U Characteristic AMD Ryzen 9 3900X
Intel® AI Boost AI hardware --
Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT) AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

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 Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) GPU no iGPU
0.60 GHz GPU frequency --
1.90 GHz GPU (Turbo) --
-- GPU Generation --
5 nm Technology
4 Max. displays
64 Compute units --
512 Shader --
Yes Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory --
12.2 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 Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) 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 Codec VP9 No
Decode Codec VP8 No
Decode / Encode Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The Intel Core Ultra 5 135U supports a maximum of 96 GB of memory in 2 memory channels. The AMD Ryzen 9 3900X can connect up to 128 GB of memory in 2 memory channels.

Intel Core Ultra 5 135U Characteristic AMD Ryzen 9 3900X
LPDDR5X-7500, DDR5-5600 Memory DDR4-3200
96 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
120.0 GB/s Max. Bandwidth 51.2 GB/s
No ECC Yes
12.00 MB L2 Cache 6.00 MB
-- L3 Cache 64.00 MB
4.0 PCIe version 4.0
20 PCIe lanes 20
39.4 GB/s PCIe Bandwidth 39.4 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core Ultra 5 135U has a TDP of 15 W, that of the AMD Ryzen 9 3900X is 105 W.

Intel Core Ultra 5 135U Characteristic AMD Ryzen 9 3900X
15 W TDP (PL1 / PBP) 105 W
57 W TDP (PL2) 142 W
28 W TDP up --
12 W TDP down --
110 °C Tjunction max. 95 °C

Technical details

The Intel Core Ultra 5 135U has a 12.00 MB cache, while the AMD Ryzen 9 3900X cache has a total of 70.00 MB.

Intel Core Ultra 5 135U Characteristic AMD Ryzen 9 3900X
7 nm Technology 7 nm
Chiplet Chip design Chiplet
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 AM4 (PGA 1331)
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q4/2023 Release date Q3/2019
-- Release price 485 $
show more data show more data


Rate these processors

Here you can rate the Intel Core Ultra 5 135U to help other visitors make their purchasing decisions. The average rating is 4.3 stars (3 ratings). Rate now:
Here you can rate the AMD Ryzen 9 3900X to help other visitors make their purchasing decisions. The average rating is 4.3 stars (25 ratings). Rate now:


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 135U Intel Core Ultra 5 135U
12C 14T @ 4.40 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
78 (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.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 4.40 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1068 (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.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 4.40 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1302 (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.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
18165 (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 Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 4.40 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1300 (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.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
12454 (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.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 4.40 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1714 (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.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
10689 (100%)

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.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 4.40 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
502 (100%)

Cinebench R20 (Multi-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 multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
6954 (100%)

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 135U Intel Core Ultra 5 135U
Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) @ 1.90 GHz
1885 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
@ 0.00 GHz
0 (0%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
281 (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 Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
32755 (100%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
115.9 (100%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 4.40 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
536 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 3.80 GHz
8183 (100%)

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 Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 4.40 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
214 (100%)

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 Core Ultra 5 135U Intel Core Ultra 5 135U
12C 14T @ 1.60 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
3168 (100%)

Devices using this processor

Intel Core Ultra 5 135U AMD Ryzen 9 3900X
Unknown Unknown

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