Intel Core Ultra 7 155H

Name: Intel Core Ultra 7 155H
Brand: Intel
SKU: 1822

Manufacturer: Intel

The Intel Core Ultra 7 155H is a laptop processor built for more demanding portable computing scenarios, operating within a 28W thermal design power envelope on a 7nm semiconductor process. It employs big.LITTLE technology across a hybrid core configuration of six performance cores at 1.4GHz and eight efficiency cores at 0.9GHz, totaling 22 threads for broad multitasking capability. The chip connects to the platform via PCIe 5.0 and is housed in a BGA 2049 socket.

The processor reaches a turbo clock of 4.8GHz and carries 24MB of L3 cache, with a multi-threaded PassMark score of 24,879 and a single-threaded result of 3,468. Memory support extends to DDR5 at up to 7467MHz across two channels with a 96GB maximum capacity, though ECC is not supported. The integrated Arc Xe-LPG 128EU graphics unit runs from 300MHz base up to 2250MHz turbo, features 1024 shading units, 64 TMUs, and 32 ROPs, and supports DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, and up to four simultaneous displays. Instruction sets include AVX2, AES, FMA3, and SSE 4.1/4.2, alongside full multithreading and NX bit support.

Pros

A 22-thread hybrid core layout using big.LITTLE technology allows the processor to handle a wide range of parallel tasks efficiently within a laptop form factor
24MB of L3 cache is a notably generous amount for a mobile processor, helping sustain data throughput during extended or demanding workloads
PCIe 5.0 support reflects a current-generation platform interface, enabling faster data transfer with compatible components
The Arc Xe-LPG 128EU integrated graphics unit with 1024 shading units and a 2250MHz turbo offers a more capable integrated GPU solution than typical laptop processors
DDR5 memory support at up to 7467MHz across two channels, with a 96GB maximum capacity, provides substantial bandwidth and headroom for memory-intensive applications
DirectX 12 Ultimate compatibility and support for up to four simultaneous displays extend the integrated GPU's utility for multi-monitor and graphically diverse workloads

Cons

The 28W TDP is higher than ultra-low-power laptop processors, which may limit its suitability for the thinnest or most fanless portable designs
The multiplier is locked, offering no flexibility for manual clock speed tuning beyond the chip's default turbo behavior
The overclocked PassMark score of 24,880 is nearly identical to the standard result of 24,879, confirming there is essentially no performance headroom available through overclocking
ECC memory is not supported, which rules out reliability-sensitive professional or server-adjacent use cases that depend on error-correcting RAM

Who is this for?

The Intel Core Ultra 7 155H is well-suited for users who need a capable laptop processor for demanding productivity workloads, content creation, and professional multitasking. Its 22-thread hybrid core layout combined with 24MB of L3 cache makes it a strong fit for tasks that benefit from broad thread availability, such as software development, data processing, or running multiple applications simultaneously. The Arc Xe-LPG integrated GPU with DirectX 12 Ultimate support and four-display output also makes it a reasonable option for users who need flexible graphical capability and multi-monitor setups without a discrete card. Additionally, DDR5 memory support up to 96GB at 7467MHz caters to professionals with memory-intensive workflows.

Who is this NOT for?

The 28W TDP makes this processor less suited for ultra-thin or fanless laptop designs where thermal headroom is tightly constrained, as the platform will need adequate cooling to sustain its performance levels. Users who require ECC memory for reliability-critical or error-sensitive workloads will find this chip unsuitable, as that capability is absent. The locked multiplier also means this is not the right choice for users seeking any form of manual clock tuning, and the near-identical standard and overclocked PassMark scores confirm there is no practical performance headroom to unlock beyond the processor's factory-defined operating parameters.

General info:

Type	Laptop
CPU socket	BGA 2049
Has integrated graphics	✓
Thermal Design Power (TDP)	28W
semiconductor size	7 nm
CPU temperature	110 °C
PCI Express (PCIe) version	5
Supports 64-bit	✓

The Intel Core Ultra 7 155H is a laptop processor built on a 7nm semiconductor process and housed in a BGA 2049 socket, with a thermal design power of 28W and a maximum rated CPU temperature of 110°C. It includes integrated graphics, supports 64-bit computing, and connects to the platform through PCIe version 5, reflecting a more current platform interface than previous generations.

Performance:

CPU speed	6 x 1.4 & 8 x 0.9 GHz
CPU threads	22 threads
turbo clock speed	4.8GHz
Has an unlocked multiplier	✕
L3 cache	24 MB
Uses big.LITTLE technology	✓
clock multiplier	38

The processor uses big.LITTLE technology across a hybrid layout of six cores running at 1.4GHz and eight cores at 0.9GHz, distributing work across 22 threads in total. It can reach a turbo clock speed of 4.8GHz, supported by a clock multiplier of 38, while 24MB of L3 cache provides substantial on-chip data storage to help sustain throughput during demanding workloads. The multiplier is locked, meaning clock speed adjustments beyond the processor's defined turbo behavior are not available.

Benchmarks:

PassMark result	24879
PassMark result (single)	3468
PassMark result (overclocked)	24880

In PassMark testing, the Intel Core Ultra 7 155H achieves a multi-threaded score of 24,879 and a single-threaded score of 3,468, reflecting its capacity across both parallel and sequential workloads. The overclocked PassMark result of 24,880 is virtually identical to the standard figure, indicating that the processor operates at essentially its ceiling under default settings with no meaningful headroom gained through overclocking.

Integrated graphics:

GPU clock speed	300 MHz
GPU name	Arc Xe-LPG 128EU
GPU turbo	2250 MHz
GPU execution units	8
DirectX version	DirectX 12 Ultimate
supported displays	4
OpenGL version	4.6
OpenCL version	3
texture mapping units (TMUs)	64
render output units (ROPs)	32
shading units	1024

The integrated graphics solution is the Arc Xe-LPG 128EU, running at a base clock of 300MHz and boosting up to a turbo frequency of 2250MHz. It is equipped with 1024 shading units, 64 texture mapping units, and 32 render output units, and operates across 8 GPU execution units. The unit supports up to four simultaneous displays and is compatible with DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 3, covering a broad range of rendering and general-purpose GPU compute workloads.

Memory:

RAM speed (max)	7467 MHz
DDR memory version	5
memory channels	2
maximum memory amount	96GB
Supports ECC memory	✕

The Intel Core Ultra 7 155H supports DDR5 memory at speeds of up to 7467MHz across two channels, providing dual-channel bandwidth for memory-sensitive workloads. It can address a maximum of 96GB of RAM, offering considerable capacity for multitasking and professional applications. ECC memory is not supported by this processor.

Features:

instruction sets	MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
uses multithreading	✓
Has NX bit	✓

The Intel Core Ultra 7 155H supports a broad range of instruction sets including AVX, AVX2, FMA3, AES, F16C, MMX, SSE 4.1, and SSE 4.2, enabling hardware-accelerated operations across vector processing, floating-point computation, and encryption workloads. Multithreading is fully supported, allowing the processor to execute multiple threads concurrently across its available cores. The inclusion of the NX bit adds hardware-level memory protection, forming part of the platform's baseline defense against certain types of malicious code execution.

Final Verdict

The Intel Core Ultra 7 155H is a well-specified laptop processor that positions itself firmly in the higher-demand segment of portable computing. Its standout combination of a 22-thread hybrid core layout, 24MB of L3 cache, and PCIe 5.0 connectivity gives it genuine utility for professionals running complex, thread-heavy workloads on the go, while the Arc Xe-LPG integrated graphics adds a layer of graphical versatility that goes beyond what most integrated solutions offer. The 28W TDP means platform cooling requirements are real, and the locked multiplier leaves no room for manual tuning — but for the user who needs a capable, feature-rich mobile processor without relying on a discrete GPU for everyday tasks, the Core Ultra 7 155H represents a coherent and well-rounded choice.