Quick Answer
The Intel Core Ultra 7 155H and the Intel Core i7-1355U are processors designed for different types of laptops. The Core Ultra 7 155H is a higher-power chip generally found in performance-focused laptops, offering more cores and integrated Arc graphics. The Core i7-1355U is a lower-power processor typically used in thin-and-light laptops, prioritizing efficiency and battery life.
Intel Core Ultra 7 155H vs Intel Core i7 1355U: Full Comparison
Introduction
Choosing a laptop often involves understanding the processor at its heart. This comparison examines two distinct Intel processors from different generations and product lines: the newer Core Ultra 7 155H and the previous-generation Core i7-1355U. While both carry the “i7” branding, they are engineered for different use cases and laptop form factors. This article breaks down their architectures, performance profiles, and key features to help clarify which chip might align better with specific computing needs, from everyday productivity to more demanding creative tasks.
Architecture and Core Configuration
The fundamental difference lies in their design philosophy and core structure.
- Intel Core Ultra 7 155H (Meteor Lake): This processor introduces a disaggregated architecture built on Intel 4 process technology. It features a hybrid core design with 16 cores (6 Performance-cores, 8 Efficient-cores, and 2 Low Power Efficient-cores) and 22 threads. The inclusion of a dedicated AI accelerator, the NPU (Neural Processing Unit), is a key new feature for on-device AI tasks.
- Intel Core i7-1355U (Raptor Lake): Based on a more traditional monolithic design, this chip uses Intel 7 process technology. It has a hybrid design of 10 cores (2 Performance-cores and 8 Efficient-cores) and 12 threads. It lacks a dedicated NPU, relying on the CPU and integrated GPU for AI workloads.
The Core Ultra 7’s higher core count and newer architecture generally provide a foundation for better multi-threaded performance.
Performance and Use Cases
Performance varies significantly due to power limits and core design.
- Core Ultra 7 155H: With a base power of 28W and a maximum turbo power that can be configured up to 115W in some designs, this chip is suited for sustained high-performance workloads. It is typically found in larger laptops or creator-focused devices. It handles tasks like video editing, 3D rendering, and coding compilation more effectively.
- Core i7-1355U: This is a 15W base power processor, designed for ultraportable laptops where thermal headroom and battery life are primary concerns. It excels at everyday productivity—web browsing, office applications, and video conferencing—offering responsive performance within its power envelope.
For intensive applications, the Core Ultra 7 155H typically has a clear advantage, while the i7-1355U is optimized for efficiency.
Integrated Graphics
The graphical capabilities represent one of the most substantial generational leaps.
- Core Ultra 7 155H: Features Intel Arc graphics with up to 8 Xe-cores. This integrated GPU offers a significant performance increase over previous generations, enabling smoother gameplay in lighter titles and faster acceleration in creative applications that support GPU rendering.
- Core i7-1355U: Equipped with Intel Iris Xe Graphics (with 96 execution units). While capable for display output and basic media tasks, its gaming and creative performance is more limited compared to the newer Arc architecture.
Power Efficiency and Battery Life
Battery life is influenced by the processor’s power profile and the laptop’s overall design.
- Core i7-1355U: Its 15W base TDP makes it inherently efficient for light tasks. Laptops equipped with this processor often prioritize long battery life and can typically last a full workday or more on a single charge under normal use.
- Core Ultra 7 155H: While built on a more efficient process node, its higher performance ceiling means it can consume more power under load. However, its Low Power Efficient-cores and NPU are designed to handle background and AI tasks efficiently, which can help in optimizing battery life during lighter usage scenarios. Actual battery life will depend heavily on the laptop manufacturer’s design and power management.
Comparison Table
| Feature | Intel Core Ultra 7 155H | Intel Core i7-1355U |
|---|---|---|
| Processor Series | Core Ultra (Meteor Lake) | Core i7 (Raptor Lake-U) |
| Launch Date | Q4 2023 | Q1 2023 |
| Process Technology | Intel 4 | Intel 7 |
| Total Cores / Threads | 16 Cores / 22 Threads (6P+8E+2LP-E) |
10 Cores / 12 Threads (2P+8E) |
| Max Turbo Frequency | Up to 4.8 GHz | Up to 5.0 GHz |
| Base Power (TDP) | 28W | 15W |
| Integrated Graphics | Intel Arc Graphics (up to 8 Xe-cores) | Intel Iris Xe Graphics (96 EUs) |
| AI Acceleration | Dedicated NPU (Neural Processing Unit) | CPU/GPU-based AI (No dedicated NPU) |
| Typical Laptop Form Factor | Performance laptops, Creator laptops | Thin-and-light Ultrabooks |
| Memory Support | DDR5, LPDDR5/x | DDR4, DDR5, LPDDR5/x |
Frequently Asked Questions (FAQ)
What is the main difference between the Core Ultra 7 155H and the i7-1355U?
The primary difference is their target use case and power profile. The Core Ultra 7 155H is a higher-performance chip for more demanding tasks and typically goes into larger laptops. The i7-1355U is an ultra-low-power processor designed for maximum efficiency and battery life in thin-and-light laptops.
Which processor is better for gaming?
The Intel Core Ultra 7 155H, with its more powerful Intel Arc integrated graphics, generally provides a better gaming experience for light to moderate titles compared to the Iris Xe graphics in the i7-1355U. For serious gaming, a laptop with a discrete GPU paired with either processor would be recommended.
Does the Core i7-1355U have an AI NPU like the Core Ultra 7?
No, the Intel Core i7-1355U does not include a dedicated Neural Processing Unit (NPU). It handles AI workloads using its CPU and integrated GPU cores. The dedicated NPU is a new feature introduced with the Core Ultra series.
Can I find the Core Ultra 7 155H in a thin-and-light laptop?
While possible, it is less common. The 28W base power design of the Core Ultra 7 155H requires more robust cooling, which can be a challenge in extremely thin chassis. It is more typically found in slightly larger performance or creator-focused laptops.
Final Thoughts
The choice between the Intel Core Ultra 7 155H and the Intel Core i7-1355U ultimately depends on the user’s priorities and the type of laptop they prefer. The Core Ultra 7 155H represents a newer architecture with advancements in integrated graphics, AI capabilities, and multi-core performance, making it suitable for users with more intensive computing needs. The Core i7-1355U remains a competent and efficient choice for users whose primary concerns are portability, all-day battery life, and handling everyday tasks smoothly. Understanding these distinctions helps in selecting a laptop whose processor aligns with specific performance and form factor requirements.