Intel Core Ultra 7 155U

Name: Intel Core Ultra 7 155U
Brand: Intel
SKU: 2850

Manufacturer: Intel

The Intel Core Ultra 7 155U is a laptop processor designed for thin-and-light computing, combining a low 15W thermal design power with a hybrid core architecture that balances responsiveness and efficiency. Built on a 7 nm process node, it uses big.LITTLE technology to manage a mix of performance and efficiency cores — two cores at 1.7 GHz and eight at 1.2 GHz — totaling 14 threads through multithreading support. A turbo frequency of 4.8 GHz gives it the ability to handle bursts of demanding activity without sustained thermal pressure.

The processor includes integrated graphics with a GPU turbo clock of 1950 MHz, along with support for OpenGL 4.6 and OpenCL 3, covering a range of graphical and compute workloads without requiring a discrete GPU. On the memory side, it supports DDR5 at up to 5600 MHz across two channels, with a maximum capacity of 96 GB, though ECC memory is not supported. The 12 MB L3 cache, PCIe 4.0 interface, and instruction sets including AES, AVX2, FMA3, and SSE 4.2 round out a specification set oriented toward versatile everyday laptop use, with a maximum CPU temperature of 110°C.

Pros

A 15W TDP makes it well-suited for thin-and-light laptop designs where heat output and battery draw need to be minimized
big.LITTLE hybrid architecture distributes workloads across performance and efficiency cores, allowing the processor to adapt to both demanding and low-intensity tasks
A turbo frequency of 4.8 GHz provides meaningful burst performance for responsive, single-threaded tasks despite the low base power envelope
Integrated graphics with a 1950 MHz GPU turbo clock, OpenGL 4.6, and OpenCL 3 support enable graphical and GPU compute workloads without requiring a discrete GPU
DDR5 memory support at up to 5600 MHz with a 96 GB capacity ceiling is generous for a laptop-class processor
A single-threaded PassMark score of 3,373 reflects solid per-core responsiveness for everyday productivity and latency-sensitive applications

Cons

With only two memory channels, memory bandwidth is limited compared to multi-channel desktop or workstation configurations
ECC memory is not supported, making this processor unsuitable for deployments where hardware-level memory error correction is required
The clock multiplier is locked, so there is no ability to tune frequency beyond the processor's fixed operating parameters
PCIe 4.0 rather than PCIe 5.0 limits peak bandwidth for high-speed peripheral and storage connectivity

Who is this for?

The Core Ultra 7 155U is well-matched to users who need a capable everyday laptop processor with a low thermal footprint, particularly those working across productivity, light content creation, or general computing tasks on the go. Its 15W TDP combined with big.LITTLE hybrid architecture makes it a natural fit for thin-and-light laptops where battery endurance and chassis thermals are design priorities. The integrated graphics with OpenGL 4.6 and OpenCL 3 support extend its usefulness to users who need basic graphical and GPU compute capability without carrying a discrete GPU, and the 96 GB DDR5 memory ceiling accommodates users running memory-intensive applications within a portable form factor.

Who is this NOT for?

This processor is not well-suited to workloads that demand sustained high-throughput compute performance, as its hybrid core configuration and 15W power envelope place a ceiling on prolonged intensive processing. Users running CPU-bound tasks such as heavy video rendering, large-scale simulation, or complex data processing pipelines will find the available compute headroom limiting. It is also a poor fit for environments that require ECC memory support, such as scientific computing or any application where data integrity under continuous operation is critical, since ECC is not supported. Additionally, the two-channel memory configuration restricts memory bandwidth for workloads that scale with multi-channel throughput.

General info:

Type	Laptop
Has integrated graphics	✓
Thermal Design Power (TDP)	15W
semiconductor size	7 nm
CPU temperature	110 °C
PCI Express (PCIe) version	4
Supports 64-bit	✓

The Core Ultra 7 155U is a laptop processor built on a 7 nm process node with a 15W Thermal Design Power, making it suited to thin-and-light portable designs where heat and power consumption need to be kept in check. It supports 64-bit operation, includes integrated graphics, and connects via a PCIe 4.0 interface. The maximum CPU temperature is rated at 110°C, providing a reasonable thermal ceiling for sustained workloads within its low-power envelope.

Performance:

CPU speed	2 x 1.7 & 8 x 1.2 GHz
CPU threads	14 threads
turbo clock speed	4.8GHz
Has an unlocked multiplier	✕
L3 cache	12 MB
Uses big.LITTLE technology	✓

The Core Ultra 7 155U uses big.LITTLE technology to combine two performance cores running at 1.7 GHz with eight efficiency cores at 1.2 GHz, delivering 14 threads in total across the hybrid configuration. This design allows the processor to direct workloads to the appropriate core type depending on demand, balancing responsiveness against power draw. A turbo frequency of 4.8 GHz is available for short bursts of intensive processing, while the 12 MB L3 cache helps reduce latency across active workloads. The clock multiplier is locked, so the processor operates strictly within its defined frequency parameters.

Benchmarks:

PassMark result	16382
PassMark result (single)	3373

In PassMark testing, the Core Ultra 7 155U records a multi-threaded score of 16,382, reflecting solid aggregate throughput across its hybrid core configuration for a processor operating within a 15W thermal envelope. The single-threaded result of 3,373 indicates respectable per-core execution capability, suggesting the processor handles responsive, latency-sensitive tasks reasonably well alongside its multi-threaded workload capacity.

Integrated graphics:

GPU turbo	1950 MHz
OpenGL version	4.6
OpenCL version	3

The integrated graphics in the Core Ultra 7 155U reaches a GPU turbo clock of 1950 MHz, providing a reasonable ceiling for graphics workloads handled without a discrete GPU. API support covers OpenGL 4.6 and OpenCL 3, enabling compatibility with a broad range of graphical rendering tasks as well as general-purpose GPU compute workloads across supported applications.

Memory:

RAM speed (max)	5600 MHz
DDR memory version	5
memory channels	2
maximum memory amount	96GB
Supports ECC memory	✕

The Core Ultra 7 155U supports DDR5 memory at speeds up to 5600 MHz across two channels, with a maximum installed capacity of 96 GB — a generous ceiling for a laptop-class processor. ECC memory is not supported, which is consistent with its consumer and productivity-oriented positioning rather than server or mission-critical use cases.

Features:

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

The Core Ultra 7 155U supports multithreading, allowing its cores to handle multiple threads simultaneously for improved parallel task execution. The NX bit is present, enabling hardware-level protection against certain memory-based code execution vulnerabilities. Instruction set coverage includes MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2, providing hardware acceleration across a range of workloads including encryption, vector processing, and floating-point computation.

Final Verdict

The Intel Core Ultra 7 155U is a well-rounded laptop processor that makes a clear case for users who prioritize portability and efficiency without sacrificing day-to-day responsiveness. Its big.LITTLE hybrid architecture paired with a 15W TDP allows it to handle a wide range of everyday computing and productivity workloads within the thermal constraints of thin-and-light laptop designs, while the 4.8 GHz turbo ceiling and a solid single-threaded PassMark score of 3,373 ensure it remains responsive under bursts of demand. Integrated graphics with OpenCL 3 and OpenGL 4.6 support add genuine utility for users who need GPU compute capability on the move. Where it falls short — sustained compute-intensive workloads, ECC memory requirements, or bandwidth-heavy multi-channel scenarios — reflects its design intent rather than any shortcoming within its scope. For mainstream laptop use centered on productivity, mobility, and versatile everyday performance, the Core Ultra 7 155U is a technically coherent and purposeful choice.