Intel Processor U300 vs Intel Core Ultra 5 135H

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CPU comparison with benchmarks


Intel Processor U300 CPU1 vs CPU2 Intel Core Ultra 5 135H
Intel Processor U300 Intel Core Ultra 5 135H

CPU comparison

In this CPU comparison, we compare the Intel Processor U300 and the Intel Core Ultra 5 135H and use benchmarks to check which processor is faster.

We compare the Intel Processor U300 5 core processor released in Q1/2023 with the Intel Core Ultra 5 135H which has 14 CPU cores and was introduced in Q4/2023.
Intel Processor U (4) Family Intel Core Ultra 5 (10)
Intel Core i 1300P/1300U (29) CPU group Intel Core Ultra 100H (5)
13 Generation 1
Raptor Lake U Architecture Meteor Lake H
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Processor U300 is a 5 core processor with a clock frequency of 1.20 GHz (4.40 GHz). The processor can compute 6 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.

Intel Processor U300 Characteristic Intel Core Ultra 5 135H
5 Cores 14
6 Threads 18
hybrid (big.LITTLE) Core architecture hybrid (big.LITTLE)
Yes Hyperthreading Yes
No Overclocking ? No
1.20 GHz (4.40 GHz)
1x Raptor Cove
A-Core 1.70 GHz (4.60 GHz)
4x Redwood Cove
0.90 GHz (3.30 GHz)
4x Gracemont
B-Core 1.20 GHz (3.60 GHz)
8x Crestmont
-- C-Core 0.70 GHz (2.50 GHz)
2x Crestmont

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 Processor U300 Characteristic Intel Core Ultra 5 135H
-- AI hardware Intel AI engine
-- AI specifications Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT)

Internal Graphics

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 UHD Graphics 13th Gen (48 EU) GPU Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake)
0.20 GHz GPU frequency 0.60 GHz
1.10 GHz GPU (Turbo) 2.20 GHz
13 GPU Generation --
10 nm Technology 5 nm
3 Max. displays 4
48 Compute units 128
384 Shader 1024
No Hardware Raytracing Yes
No Frame Generation No
32 GB Max. GPU Memory 32 GB
12.1 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.

Intel UHD Graphics 13th Gen (48 EU) 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 / Encode Codec VP9 Decode
Decode Codec VP8 Decode
Decode Codec AV1 Decode / Encode
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 Processor U300, 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.

Intel Processor U300 Characteristic Intel Core Ultra 5 135H
LPDDR5-5200, LPDDR4X-4266, DDR5-5200, DDR4-3200 Memory LPDDR5X-7500, DDR5-5600
96 GB Max. Memory 96 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
83.2 GB/s Max. Bandwidth 120.0 GB/s
No ECC No
-- L2 Cache 14.00 MB
10.00 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 Intel Processor U300 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.

Intel Processor U300 Characteristic Intel Core Ultra 5 135H
15 W TDP (PL1 / PBP) 28 W
55 W TDP (PL2) 115 W
-- TDP up 65 W
12 W TDP down 20 W
100 °C Tjunction max. 110 °C

Technical details

The Intel Processor U300 has 10.00 MB cache and is manufactured in 10 nm. The cache of Intel Core Ultra 5 135H is at 32.00 MB. The processor is manufactured in 7 nm.

Intel Processor U300 Characteristic Intel Core Ultra 5 135H
10 nm Technology 7 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
BGA 1744 Socket BGA 2049
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 11, Linux
Q1/2023 Release date Q4/2023
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Processor U300 to help other visitors make their purchasing decisions. The average rating is 4.3 stars (7 ratings). Rate now:
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:


Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Processor U300 (96%)
Intel Core Ultra 5 135H (100%)
⌀ Multi core performance in 1 CPU benchmarks
Intel Processor U300 (50%)
Intel Core Ultra 5 135H (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 Processor U300 Intel Processor U300
5C 6T @ 4.40 GHz
2158 (96%)
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.
Intel Processor U300 Intel Processor U300
5C 6T @ 1.20 GHz
5096 (50%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
10239 (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 Processor U300 Intel Processor U300
Intel UHD Graphics 13th Gen (48 EU) @ 1.10 GHz
844 (19%)
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.
Intel Processor U300 Intel Processor U300
5C 6T @ 4.40 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.
Intel Processor U300 Intel Processor U300
5C 6T @ 4.40 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.
Intel Processor U300 Intel Processor U300
5C 6T @ 4.40 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.
Intel Processor U300 Intel Processor U300
5C 6T @ 1.20 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.
Intel Processor U300 Intel Processor U300
5C 6T @ 4.40 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.
Intel Processor U300 Intel Processor U300
5C 6T @ 1.20 GHz
0 (0%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
10765 (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 Processor U300 Intel Processor U300
5C 6T @ 1.20 GHz
9341 (100%)
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
0 (0%)

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 Processor U300 Intel Processor U300
1.20 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

Intel Processor U300 Intel Core Ultra 5 135H
Unknown Unknown

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