Intel Core Ultra 7 155H vs Intel Atom x5-Z8350

Last updated: 2024-03-22

CPU comparison with benchmarks


Intel Core Ultra 7 155H		Intel Atom x5-Z8350
CPU comparison Intel Core Ultra 7 155H or Intel Atom x5-Z8350 - 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 7 155H has 16 cores with 22 threads and clocks with a maximum frequency of 4.80 GHz. Up to 96 GB of memory is supported in 2 memory channels. The Intel Core Ultra 7 155H was released in Q4/2023. The Intel Atom x5-Z8350 has 4 cores with 4 threads and clocks with a maximum frequency of 1.92 GHz. The CPU supports up to 2 GB of memory in 1 memory channels. The Intel Atom x5-Z8350 was released in Q1/2016.

Intel Core Ultra 7 (10)	Family	Intel Atom (108)
Intel Core Ultra 100H (5)	CPU group	Intel Atom x3/x5/x7 (9)
1	Generation	5
Meteor Lake H	Architecture	Cherry Trail
Mobile	Segment	Mobile
--	Predecessor	--
--	Successor	--

CPU Cores and Base Frequency The Intel Core Ultra 7 155H is a 16 core processor with a clock frequency of 1.40 GHz (4.80 GHz). The Intel Atom x5-Z8350 has 4 CPU cores with a clock frequency of 1.44 GHz (1.92 GHz).
Intel Core Ultra 7 155H	Characteristic	Intel Atom x5-Z8350
16	Cores	4
22	Threads	4
hybrid (big.LITTLE)	Core architecture	normal
Yes	Hyperthreading	No
No	Overclocking ?	No
1.40 GHz (4.80 GHz) 6x Redwood Cove	A-Core	1.44 GHz (1.92 GHz)
0.90 GHz (3.80 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 7 155H	Characteristic	Intel Atom x5-Z8350
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 8 Core Graphics 128 EUs (Meteor Lake)	GPU	Intel HD Graphics 400
0.60 GHz	GPU frequency	0.20 GHz
2.25 GHz	GPU (Turbo)	0.50 GHz
--	GPU Generation	8
5 nm	Technology	14 nm
4	Max. displays	3
128	Compute units	12
1024	Shader	96
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	Intel HD Graphics 400
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	Decode / Encode
Decode	Codec VC-1	Decode
Decode / Encode	Codec JPEG	Decode

Memory & PCIe The Intel Core Ultra 7 155H supports a maximum of 96 GB of memory in 2 memory channels. The Intel Atom x5-Z8350 can connect up to 2 GB of memory in 1 memory channels.
Intel Core Ultra 7 155H	Characteristic	Intel Atom x5-Z8350
LPDDR5X-7500, DDR5-5600	Memory	DDR3L-1600
96 GB	Max. Memory	2 GB
2 (Dual Channel)	Memory channels	1 (Single Channel)
120.0 GB/s	Max. Bandwidth	12.8 GB/s
No	ECC	No
18.00 MB	L2 Cache	--
24.00 MB	L3 Cache	2.00 MB
5.0	PCIe version	2.0
20	PCIe lanes	1
78.8 GB/s	PCIe Bandwidth	0.5 GB/s
Thermal Management The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core Ultra 7 155H has a TDP of 28 W, that of the Intel Atom x5-Z8350 is 2 W.
Intel Core Ultra 7 155H	Characteristic	Intel Atom x5-Z8350
28 W	TDP (PL1 / PBP)	2 W
115 W	TDP (PL2)	--
65 W	TDP up	--
20 W	TDP down	--
110 °C	Tjunction max.	--
Technical details The Intel Core Ultra 7 155H has a 42.00 MB cache, while the Intel Atom x5-Z8350 cache has a total of 2.00 MB.

Intel Core Ultra 7 155H	Characteristic	Intel Atom x5-Z8350
7 nm	Technology	14 nm
Chiplet	Chip design	Monolithic
x86-64 (64 bit)	Instruction set (ISA)	x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2	ISA extensions	SSE4.1, SSE4.2
BGA 2049	Socket	BGA 592
VT-x, VT-x EPT, VT-d	Virtualization	VT-x, VT-x EPT
Yes	AES-NI	Yes
Windows 11, Linux	Operating systems
Q4/2023	Release date	Q1/2016
--	Release price	18 $

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Intel Core Ultra 7 155H 16C 22T @ 1.40 GHz (4.80 GHz) buy now on Amazon and save! Intel Atom x5-Z8350 4C 4T @ 1.44 GHz (1.92 GHz) buy now on Amazon and save!

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Average performance in benchmarks

⌀ Single core performance in 3 CPU benchmarks

Intel Core Ultra 7 155H (100%)

Intel Atom x5-Z8350 (9%)

⌀ Multi core performance in 4 CPU benchmarks

Intel Core Ultra 7 155H (100%)

Intel Atom x5-Z8350 (4%)

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 7 155H 16C 22T @ 4.80 GHz	1761 (100%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	126 (7%)

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 7 155H 16C 22T @ 4.20 GHz	16825 (100%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	440 (3%)

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 7 155H 16C 22T @ 4.80 GHz	1746 (100%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	202 (12%)

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 7 155H 16C 22T @ 4.20 GHz	11878 (100%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	645 (5%)

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 7 155H 16C 22T @ 4.80 GHz	2294 (100%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	152 (7%)

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 7 155H 16C 22T @ 4.20 GHz	12749 (100%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	424 (3%)

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 7 155H Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) @ 2.25 GHz	4460 (100%)
	Intel Atom x5-Z8350 Intel HD Graphics 400 @ 0.50 GHz	105 (2%)

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 7 155H 16C 22T @ 4.20 GHz	24916 (100%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	906 (4%)

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 7 155H 16C 22T @ 4.80 GHz	0 (0%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	47 (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 7 155H 16C 22T @ 4.20 GHz	0 (0%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	165 (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 7 155H 16C 22T @ 1.40 GHz	0 (0%)
	Intel Atom x5-Z8350 4C 4T @ 1.44 GHz	241 (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 7 155H 16C 22T @ 4.80 GHz	0 (0%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	32 (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 7 155H 16C 22T @ 4.20 GHz	0 (0%)
	Intel Atom x5-Z8350 4C 4T @ 1.92 GHz	116 (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.


	Intel Core Ultra 7 155H 16,825 CB R23 MC @ 75 W	224 (100%)
	Intel Atom x5-Z8350 1.44 GHz	0 (0%)

Devices using this processor
Intel Core Ultra 7 155H	Intel Atom x5-Z8350
ASUS Zenbook Duo (2024) UX8406	Unknown

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