Intel Core Ultra 5 135H vs MediaTek MT8121

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CPU comparison with benchmarks


Intel Core Ultra 5 135H CPU1 vs CPU2 MediaTek MT8121
Intel Core Ultra 5 135H MediaTek MT8121

CPU comparison

In this CPU comparison, we compare the Intel Core Ultra 5 135H and the MediaTek MT8121 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 MediaTek MT8121 which has 4 CPU cores and was introduced in Q4/2013.
Intel Core Ultra 5 (10) Family Mediatek MT-Serie (72)
Intel Core Ultra 100H (5) CPU group MediaTek MT81xx A7 (5)
1 Generation 1
Meteor Lake H Architecture Cortex-A7
Mobile Segment Mobile
-- Predecessor --
-- Successor --

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 MediaTek MT8121 clocks with 1.30 GHz, has 4 CPU cores and can calculate 4 threads in parallel.

Intel Core Ultra 5 135H Characteristic MediaTek MT8121
14 Cores 4
18 Threads 4
hybrid (big.LITTLE) Core architecture normal
Yes Hyperthreading No
No Overclocking ? No
1.70 GHz (4.60 GHz)
4x Redwood Cove
A-Core 1.30 GHz
4x Cortex-A7
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 MediaTek MT8121
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 PowerVR SGX544
0.60 GHz GPU frequency 0.16 GHz
2.20 GHz GPU (Turbo) 0.16 GHz
-- GPU Generation --
5 nm Technology 45nm
4 Max. displays 1
128 Compute units 2
1024 Shader 4
Yes Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory --
12.2 DirectX Version 10.1

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 PowerVR SGX544
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 Decode / Encode
Decode Codec VP9 No
Decode Codec VP8 Decode
Decode / Encode Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

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 MediaTek MT8121 supports a maximum of GB of memory with a maximum memory bandwidth of -- enabled.

Intel Core Ultra 5 135H Characteristic MediaTek MT8121
LPDDR5X-7500, DDR5-5600 Memory
96 GB Max. Memory
2 (Dual Channel) Memory channels 0
120.0 GB/s Max. Bandwidth --
No ECC No
14.00 MB L2 Cache --
18.00 MB L3 Cache --
5.0 PCIe version --
20 PCIe lanes --
78.8 GB/s PCIe Bandwidth --

Thermal Management

The Intel Core Ultra 5 135H has a TDP of 28 W. The TDP of the MediaTek MT8121 is --. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core Ultra 5 135H Characteristic MediaTek MT8121
28 W TDP (PL1 / PBP) --
115 W TDP (PL2) --
65 W TDP up --
20 W TDP down --
110 °C Tjunction max. --

Technical details

The Intel Core Ultra 5 135H has 32.00 MB cache and is manufactured in 7 nm. The cache of MediaTek MT8121 is at 0.00 MB. The processor is manufactured in 28 nm.

Intel Core Ultra 5 135H Characteristic MediaTek MT8121
7 nm Technology 28 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv7-A (32 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions --
BGA 2049 Socket --
VT-x, VT-x EPT, VT-d Virtualization None
Yes AES-NI No
Windows 11, Linux Operating systems Android
Q4/2023 Release date Q4/2013
-- Release price --
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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 MediaTek MT8121 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Core Ultra 5 135H (100%)
MediaTek MT8121 (4%)
⌀ Multi core performance in 1 CPU benchmarks
Intel Core Ultra 5 135H (100%)
MediaTek MT8121 (2%)

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%)
MediaTek MT8121 MediaTek MT8121
4C 4T @ 1.30 GHz
71 (4%)

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%)
MediaTek MT8121 MediaTek MT8121
4C 4T @ 1.30 GHz
239 (2%)

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%)
MediaTek MT8121 MediaTek MT8121
PowerVR SGX544 @ 0.16 GHz
5 (0%)

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%)
MediaTek MT8121 MediaTek MT8121
4C 4T @ 1.30 GHz
0 (0%)

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%)
MediaTek MT8121 MediaTek MT8121
4C 4T @ 1.30 GHz
0 (0%)

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%)
MediaTek MT8121 MediaTek MT8121
4C 4T @ 1.30 GHz
0 (0%)

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%)
MediaTek MT8121 MediaTek MT8121
4C 4T @ 1.30 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.
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.60 GHz
2247 (100%)
MediaTek MT8121 MediaTek MT8121
4C 4T @ 1.30 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.
Intel Core Ultra 5 135H Intel Core Ultra 5 135H
14C 18T @ 4.20 GHz
10239 (100%)
MediaTek MT8121 MediaTek MT8121
4C 4T @ 1.30 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 Core Ultra 5 135H Intel Core Ultra 5 135H
14,771 CB R23 MC @ 66 W
224 (100%)
MediaTek MT8121 MediaTek MT8121
1.30 GHz
0 (0%)

Devices using this processor

Intel Core Ultra 5 135H MediaTek MT8121
Unknown Unknown

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