Quick Answer
The Intel Core Ultra 5 135U and Intel Core i5 1335U are both 15-watt laptop processors designed for thin-and-light notebooks. The Core Ultra 5 135U introduces a new architecture with a dedicated AI accelerator (NPU) and an integrated Arc graphics unit, while the Core i5 1335U is based on a previous-generation design with Intel Iris Xe graphics. The choice often depends on whether newer AI features and improved integrated graphics are a priority.
Intel Core Ultra 5 135U vs Intel Core i5 1335U: Full Comparison
Introduction
Choosing a laptop involves understanding the processor at its heart. The Intel Core Ultra 5 135U and the Intel Core i5 1335U are two popular U-series options found in many modern ultraportables. While their names are similar, they represent different generations and architectural philosophies from Intel. This comparison breaks down their specifications, performance characteristics, and feature sets to help clarify which CPU might be better suited for specific computing needs, from everyday tasks to more demanding applications.
Architecture and Manufacturing Process
The fundamental difference between these two processors lies in their underlying design.
- Core Ultra 5 135U (Meteor Lake): This chip is part of Intel’s new Core Ultra series, built on a disaggregated architecture. It uses Intel 4 process technology and features a chiplet design with separate tiles for compute, graphics, and I/O. A key inclusion is the Neural Processing Unit (NPU) for AI task acceleration.
- Core i5 1335U (Raptor Lake): This processor is based on the previous-generation Raptor Lake architecture, which is a refinement of the Alder Lake design. It is manufactured using Intel 7 process technology and utilizes a more traditional monolithic die structure without a dedicated NPU.
The newer manufacturing process and tile-based architecture of the Core Ultra chip can offer efficiency benefits, particularly in multi-threaded scenarios and low-power states.
Core Configuration and Performance
Both CPUs use a hybrid core design, but the core counts and types differ.
- Core Ultra 5 135U: It features a 12-core, 14-thread configuration. This consists of 2 Performance-cores (P-cores), 8 Efficient-cores (E-cores), and 2 new Low Power Efficient-cores (LP E-cores). The LP E-cores are designed to handle background tasks with minimal power draw.
- Core i5 1335U: This CPU has a 10-core, 12-thread configuration. It combines 2 Performance-cores (P-cores) with 8 Efficient-cores (E-cores).
In terms of clock speeds, the Core i5 1335U typically has higher peak turbo frequencies for its P-cores. However, the Core Ultra 5 135U, with its additional LP E-cores and newer architecture, can often deliver comparable or better multi-threaded performance and improved power efficiency during sustained workloads.
Integrated Graphics
This is one of the most significant generational leaps between the two processors.
- Core Ultra 5 135U: It is equipped with Intel Arc graphics. This represents a major architectural upgrade over previous Intel Iris Xe solutions, offering more execution units (EUs) and support for newer graphics APIs like DirectX 12 Ultimate. Gaming and creative application performance is generally noticeably better.
- Core i5 1335U: It uses Intel Iris Xe Graphics (80 EU). While capable for everyday use and light gaming, its performance is typically lower than the Arc graphics in the Core Ultra chip.
AI and Platform Features
The Core Ultra series marks Intel’s focused push into AI-powered computing for laptops.
- Core Ultra 5 135U: Includes a dedicated Neural Processing Unit (NPU). This hardware is specifically designed to handle AI and machine learning workloads efficiently, offloading tasks like background blur in video calls, photo enhancement, and language model acceleration from the CPU and GPU. It enables specific AI features in supported applications.
- Core i5 1335U: Lacks a dedicated NPU. AI tasks are handled by the CPU and GPU, which can be less power-efficient for sustained AI workloads.
The Core Ultra platform also typically supports newer connectivity standards like Wi-Fi 7 and Bluetooth 5.4, while the 13th Gen platform is often paired with Wi-Fi 6E.
Power Efficiency and Battery Life
Both processors have the same base 15W TDP (Thermal Design Power), but their real-world efficiency differs.
The Core Ultra 5 135U, with its Intel 4 process, LP E-cores, and more advanced power management, is designed to be more power-efficient, particularly in low-load and idle scenarios. This can translate to longer battery life in similarly configured laptops under typical usage patterns. The Core i5 1335U, while still efficient, does not have the same architectural advantages for minimizing power draw during light tasks.
Comparison Table
| Feature | Intel Core Ultra 5 135U | Intel Core i5 1335U |
|---|---|---|
| Codename / Series | Meteor Lake (Core Ultra) | Raptor Lake (13th Gen) |
| Processing Technology | Intel 4 | Intel 7 |
| Core Configuration | 12 Cores (2P + 8E + 2 LP E) 14 Threads |
10 Cores (2P + 8E) 12 Threads |
| Max Turbo Frequency | Typically up to 4.4 GHz | Typically up to 4.6 GHz |
| Integrated Graphics | Intel Arc Graphics | Intel Iris Xe Graphics (80 EU) |
| AI Acceleration | Yes, dedicated NPU (Neural Processing Unit) | No dedicated NPU |
| Base TDP | 15W | 15W |
| Memory Support | DDR5-5600, LPDDR5/x-7467 | DDR4-3200, DDR5-5200, LPDDR5/x-6400 |
| Platform Features | Wi-Fi 7, Bluetooth 5.4, Thunderbolt 4 (typically) | Wi-Fi 6E, Bluetooth 5.2/5.3, Thunderbolt 4 |
Frequently Asked Questions (FAQ)
What is the main advantage of the Core Ultra 5 135U over the Core i5 1335U?
The main advantages are its newer Intel Arc integrated graphics, which offer better performance for gaming and creative apps, and the inclusion of a dedicated NPU for accelerating AI tasks in supported software, which can improve efficiency.
Does the Core i5 1335U have better raw CPU speed?
Its Performance-cores can reach slightly higher peak clock speeds. In very short, single-threaded bursts, it may feel marginally faster. However, the Core Ultra 5 135U’s newer architecture and additional Low Power E-cores often provide a better balance in multi-threaded applications and overall system responsiveness.
Which processor is better for battery life?
The Intel Core Ultra 5 135U is generally designed to be more power-efficient due to its manufacturing process and the inclusion of Low Power E-cores. In comparable laptops, it may contribute to longer battery life during general use.
Are laptops with the Core i5 1335U still a good choice?
Yes. Laptops featuring the Core i5 1335U remain capable machines for everyday productivity, web browsing, and office applications. They are often available and can represent a solid value, especially if the latest AI features or integrated graphics performance are not primary concerns.
Final Thoughts
The Intel Core Ultra 5 135U represents a forward-looking step in laptop processor design, bringing significant upgrades in integrated graphics and dedicated AI hardware to the 15-watt segment. The Intel Core i5 1335U, from the previous generation, remains a competent and widely available processor that handles standard computing tasks effectively. The decision between them typically hinges on the importance placed on graphics performance for light gaming or content creation, the desire for AI-enhanced features in new applications, and the potential for improved power efficiency. Evaluating the specific laptop models that use these CPUs, including their other components like display, RAM, and build quality, is also crucial.