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Intel Core i7-1355U

Intel Core i7-1355U: A Balance of Power and Mobility in 2025 Ultrabooks

March 2025

Introduction

Modern laptops require processors that deliver not only high performance but also energy efficiency. The Intel Core i7-1355U, released as part of the Raptor Lake lineup, responds to the demands of users seeking a versatile chip for work, creativity, and mobility. Let’s explore what sets it apart, who it’s suitable for, and what nuances to pay attention to.

1. Architecture and Manufacturing Process: Hybrid Cores and Integrated Graphics

Hybrid Raptor Lake Architecture

The Core i7-1355U is built on the Raptor Lake architecture using the Intel 7 manufacturing process (equivalent to 10nm Enhanced SuperFin). The chip combines:

- 10 cores: 2 Performance cores (P-cores) with Hyper-Threading and 8 Efficient cores (E-cores).

- 12 threads: P-cores operate in dual-thread mode, while E-cores work in single-thread mode.

- Clock speeds: base frequency of 1.7 GHz and maximum Turbo Boost frequency of up to 5.0 GHz (for P-cores).

Intel Thread Director

This technology optimizes task distribution between cores. For example, heavy applications (video editors) utilize P-cores, while background processes (messengers) are redirected to E-cores. This reduces energy consumption and heat generation.

Integrated Iris Xe Graphics

The Iris Xe iGPU with 96 EU (Execution Units) supports:

- 4K displays via HDMI 2.1 or Thunderbolt 4.

- XeSS technology (upscaling for games) and Quick Sync (video encoding acceleration).

- Gaming on low settings: Fortnite (60 FPS at 1080p), CS2 (70-80 FPS).

Memory and Interfaces

- Supports DDR5-5200 and LPDDR5-6400.

- Up to 64 GB of RAM.

2. TDP 15W: How It Works in Practice

What Does TDP Mean?

The thermal design power (TDP) of 15W indicates the average energy consumption in baseline scenarios. However, in Turbo mode, the chip can temporarily consume up to 55W.

Dynamic Power Management

- In idle mode, the frequency drops to 800 MHz, reducing energy consumption to 3-5W.

- Under load (e.g., video rendering), Turbo Boost activates, but the cooling system must manage the heat.

Tip: In the BIOS settings, you can choose the "Silent" mode to reduce fan noise at the cost of slight performance drop.

3. Performance: From Office Tasks to Casual Gaming

Office Tasks

- Running 30+ tabs in Chrome, Microsoft Teams, and Excel — without lag.

- PCMark 10 test score: 5800 points (15% higher than the i7-1255U).

Multimedia

- Converting 4K video in HandBrake: a 10-minute clip processed in 4.5 minutes (all cores utilized).

- Adobe Photoshop: filters and layers applied almost instantly.

Gaming

- Genshin Impact: 40-45 FPS at 720p (low settings).

- Cyberpunk 2077: 25-30 FPS with XeSS in Performance mode.

Turbo Boost: Pros and Cons

- In the Cinebench R23 benchmark, the chip scores 1580 points (single-threaded) and 7508 (multi-threaded).

- However, after 5-7 minutes of load, throttling may occur due to overheating in thin chassis (e.g., ASUS ZenBook 13).

4. Usage Scenarios: Who Is the i7-1355U Suitable For?

- Students and Office Workers: multitasking, document work, and video conferencing.

- Freelancers: editing short videos in DaVinci Resolve, photo processing.

- Travelers: compact ultrabooks weighing from 1.2 kg.

Not Suitable For:

- Gamers requiring Ultra settings.

- Engineers working with 3D models in SolidWorks.

5. Battery Life: Up to 10 Hours of Use and Energy-Saving Technologies

Real-World Tests:

- Web surfing (brightness 150 nits): 9-10 hours.

- Watching Netflix: 7-8 hours.

- Under load (rendering): 2.5-3 hours.

Energy-Efficient Technologies:

- Intel Dynamic Tuning 3.0: adaptively adjust power based on load.

- Connected Standby: instant wake from sleep mode.

Tip: Disable background apps via the Task Manager and use dark themes for interfaces to save battery on OLED screens.

6. Comparison with Competitors

AMD Ryzen 7 7840U:

- Pros: better multi-threaded performance (8 Zen 4 cores), holds Turbo mode longer.

- Cons: weaker integrated Radeon 780M graphics in DirectX 12.

Apple M3 (for MacBook Air):

- Pros: up to 18 hours of battery life, cooler operation.

- Cons: limited compatibility with Windows programs.

Intel Core i7-1255U (previous generation):

- The i7-1355U is 20% faster in multi-threaded tasks thanks to additional E-cores.

7. Pros and Cons of the Processor

Strengths:

- Ideal for ultrabooks: power within a compact form factor.

- Support for Thunderbolt 4 and Wi-Fi 6E.

- Good graphics for less demanding games.

Weaknesses:

- Heating in thin chassis.

- Battery life lags behind Apple M3.

8. How to Choose a Laptop with i7-1355U?

Types of Devices:

- Ultrabooks: Dell XPS 13 (from $1299), Lenovo Yoga Slim 7.

- Business Laptops: HP EliteBook 840 G10 (with a rugged chassis).

What to Look For:

- Cooling: a dual-fan system is preferable.

- Display: resolution of at least Full HD, brightness of 300 nits.

- RAM: at least 16 GB LPDDR5.

Avoid: Laptops with passive cooling — they will not fully utilize the processor's potential.

9. Final Conclusion

The Intel Core i7-1355U is an excellent choice for those seeking a balance between performance and portability. It is suitable for:

- Working on the go and at home.

- Light creative tasks and study.

- Users who value Thunderbolt 4 and modern interfaces.

Key Benefits:

- Power of hybrid architecture in a thin chassis.

- Prepared for future tasks thanks to DDR5 and AI optimizations.

If your budget is $1200-1500, and you don't want to sacrifice speed for battery life, the i7-1355U will be a reliable companion. However, for gaming or complex 3D modeling, it’s better to look at laptops with discrete GPUs.

Basic

Label Name

Intel

Platform

Mobile

Launch Date

January 2023

Model Name

The Intel processor number is just one of several factors - along with processor brand, system configurations, and system-level benchmarks - to be considered when choosing the right processor for your computing needs.

i7-1355U

Code Name

Raptor Lake

CPU Specifications

Total Cores

Cores is a hardware term that describes the number of independent central processing units in a single computing component (die or chip).

Total Threads

Where applicable, Intel® Hyper-Threading Technology is only available on Performance-cores.

Performance-cores

Efficient-cores

Max Turbo Frequency

Max Turbo Frequency is the maximum single-core frequency at which the processor is capable of operating using Intel® Turbo Boost Technology and, if present, Intel® Turbo Boost Max Technology 3.0 and Intel® Thermal Velocity Boost. Frequency is typically measured in gigahertz (GHz), or billion cycles per second.

5.00 GHz

Intel Hyper-Threading Technology

Intel® Hyper-Threading Technology (Intel® HT Technology) delivers two processing threads per physical core. Highly threaded applications can get more work done in parallel, completing tasks sooner.

Yes

L3 Cache

12 MB

CPU Socket

The socket is the component that provides the mechanical and electrical connections between the processor and motherboard.

FCBGA1744

Technology

Lithography refers to the semiconductor technology used to manufacture an integrated circuit, and is reported in nanometer (nm), indicative of the size of features built on the semiconductor.

Intel 7

TDP

15 W

Processor Base Power

The time-averaged power dissipation that the processor is validated to not exceed during manufacturing while executing an Intel-specified high complexity workload at Base Frequency and at the junction temperature as specified in the Datasheet for the SKU segment and configuration.

15 W

Maximum Turbo Power

The maximum sustained (>1s) power dissipation of the processor as limited by current and/or temperature controls. Instantaneous power may exceed Maximum Turbo Power for short durations (<=10ms). Note: Maximum Turbo Power is configurable by system vendor and can be system specific.

55 W

Minimum Assured Power

12 W

Max. Operating Temperature

Junction Temperature is the maximum temperature allowed at the processor die.

100°C

Number of PCI Express Lanes

A PCI Express (PCIe) lane consists of two differential signaling pairs, one for receiving data, one for transmitting data, and is the basic unit of the PCIe bus. Max # of PCI Express Lanes is the total number of supported lanes.

Instruction Set

The instruction set is a hard program stored inside the CPU that guides and optimizes CPU operations. With these instruction sets, the CPU can run more efficiently. There are many manufacturers that design CPUs, which results in different instruction sets, such as the 8086 instruction set for the Intel camp and the RISC instruction set for the ARM camp. x86, ARM v8, and MIPS are all codes for instruction sets. Instruction sets can be extended; for example, x86 added 64-bit support to create x86-64. Manufacturers developing CPUs that are compatible with a certain instruction set need authorization from the instruction set patent holder. A typical example is Intel authorizing AMD, enabling the latter to develop CPUs compatible with the x86 instruction set.

64-bit

Microprocessor PCIe Revision

Gen 4

Memory Specifications

Memory Type

Intel® processors come in four different types: Single Channel, Dual Channel, Triple Channel, and Flex Mode. Maximum supported memory speed may be lower when populating multiple DIMMs per channel on products that support multiple memory channels.

Up to DDR5 5200 MT/s Up to DDR4 3200 MT/s Up to LPDDR5/x 6400 MT/s Up to LPDDR4x 4267 MT/s

Max Memory Size

Max memory size refers to the maximum memory capacity supported by the processor.

96 GB

Memory Channels

The number of memory channels refers to the bandwidth operation for real world application.

ECC Memory Supported

ECC Memory Supported indicates processor support for Error-Correcting Code memory. ECC memory is a type of system memory that can detect and correct common kinds of internal data corruption. Note that ECC memory support requires both processor and chipset support.

GPU Specifications

Integrated Graphics Model

An integrated GPU refers to the graphics core that is integrated into the CPU processor. Leveraging the processor's powerful computational capabilities and intelligent power efficiency management, it delivers outstanding graphics performance and a smooth application experience at a lower power consumption.

Intel® Iris® Xe Graphics eligible

Graphics Frequency

Graphics max dynamic frequency refers to the maximum opportunistic graphics render clock frequency (in MHz) that can be supported using Intel® HD Graphics with Dynamic Frequency feature.

1.30 GHz

DirectX Support

DirectX* Support indicates support for a specific version of Microsoft’s collection of APIs (Application Programming Interfaces) for handling multimedia compute tasks.

12.1

Execution Units

The Execution Unit is the foundational building block of Intel’s graphics architecture. Execution Units are compute processors optimized for simultaneous Multi-Threading for high throughput compute power.

Max Resolution (HDMI)

Max Resolution (HDMI) is the maximum resolution supported by the processor via the HDMI interface (24bits per pixel & 60Hz). System or device display resolution is dependent on multiple system design factors; actual resolution may be lower on your system.

4096 x 2304 @ 60Hz

Max Resolution (DP)

Max Resolution (DP) is the maximum resolution supported by the processor via the DP interface (24bits per pixel & 60Hz). System or device display resolution is dependent on multiple system design factors; actual resolution may be lower on your system.

7680 x 4320 @ 60Hz

Max Resolution (eDP - Integrated Flat Panel)

Max Resolution (Integrated Flat Panel) is the maximum resolution supported by the processor for a device with an integrated flat panel (24bits per pixel & 60Hz). System or device display resolution is dependent on multiple system design factors; actual resolution may be lower on your device.

4096 x 2304 @ 120Hz

Number of Displays Supported

Graphics Output

Graphics Output defines the interfaces available to communicate with display devices.

eDP 1.4b | DP 1.4a | HDMI 2.1

Miscellaneous

Intel Deep Learning Boost (Intel DL Boost) on CPU

A new set of embedded processor technologies designed to accelerate AI deep learning use cases. It extends Intel AVX-512 with a new Vector Neural Network Instruction (VNNI) that significantly increases deep learning inference performance over previous generations.

Yes

Intel Image Processing Unit

6.0

Intel Virtualization Technology (VT-x)

Intel® Virtualization Technology (VT-x) allows one hardware platform to function as multiple “virtual” platforms. It offers improved manageability by limiting downtime and maintaining productivity by isolating computing activities into separate partitions.

Yes

Intel Virtualization Technology for Directed I/O (VT-d)

Intel® Virtualization Technology for Directed I/O (VT-d) continues from the existing support for IA-32 (VT-x) and Itanium® processor (VT-i) virtualization adding new support for I/O-device virtualization. Intel VT-d can help end users improve security and reliability of the systems and also improve performance of I/O devices in virtualized environments.

Yes

Intel Standard Manageability (ISM)

Intel® Standard Manageability is the manageability solution for Intel vPro® Essentials platforms and is a subset of Intel® AMT with out-of-band management over Ethernet and Wi-Fi, but no KVM or new life cycle management features.

Intel® SSE4.1 | Intel® SSE4.2 | Intel® AVX2

Execute Disable Bit

Execute Disable Bit is a hardware-based security feature that can reduce exposure to viruses and malicious-code attacks and prevent harmful software from executing and propagating on the server or network.

Yes

Cache

CPU Cache is an area of fast memory located on the processor. Intel® Smart Cache refers to the architecture that allows all cores to dynamically share access to the last level cache.

12 MB Intel® Smart Cache

Intel AES New Instructions

Intel® AES New Instructions (Intel® AES-NI) are a set of instructions that enable fast and secure data encryption and decryption. AES-NI are valuable for a wide range of cryptographic applications, for example: applications that perform bulk encryption/decryption, authentication, random number generation, and authenticated encryption.

Yes

Intel High Definition Audio

Yes

Intel Volume Management Device (VMD)

Intel® Volume Management Device (VMD) provides a common, robust method of hot plug and LED management for NVMe-based solid state drives.

Yes

Intel Boot Guard

Intel® Device Protection Technology with Boot Guard helps protect the system’s pre-OS environment from viruses and malicious software attacks.

Yes

Intel Hardware Shield Eligibility

Yes

Intel VT-x with Extended Page Tables (EPT)

Intel® VT-x with Extended Page Tables (EPT), also known as Second Level Address Translation (SLAT), provides acceleration for memory intensive virtualized applications. Extended Page Tables in Intel® Virtualization Technology platforms reduces the memory and power overhead costs and increases battery life through hardware optimization of page table management.

Yes

Intel QuickAssist Software Acceleration

Yes

Intel Control-Flow Enforcement Technology

CET - Intel Control-flow Enforcement Technology (CET) helps protect against the misuse of legitimate code snippets through return-oriented programming (ROP) control-flow hijacking attacks.

Yes

Intel Flex Memory Access

Yes

Intel OS Guard

Yes

OpenGL Support

OpenGL (Open Graphics Library) is a cross-language, multi-platform API (Application Programming Interface) for rendering 2D and 3D vector graphics.

4.6

OpenCL Support

OpenCL (Open Computing Language) is a multi-platform API (Application Programming Interface) for heterogeneous parallel programming.

3.0

Intel Quick Sync Video

Intel® Quick Sync Video delivers fast conversion of video for portable media players, online sharing, and video editing and authoring.

Yes

Benchmarks

Geekbench 6

Single Core Score

2186

Geekbench 6

Multi Core Score

7508

Geekbench 5

Single Core Score

1690

Geekbench 5

Multi Core Score

7177

Passmark CPU

Single Core Score

3569

Passmark CPU

Multi Core Score

15190

Compared to Other CPU

Geekbench 6 Single Core

Ryzen 7 PRO 7745

2401 +9.8%

Core i7-1370P

2266 +3.7%

Core i7-1355U

2186

Ryzen 9 5900

2080 -4.8%

Xeon w7-2475X

1994 -8.8%

Geekbench 6 Multi Core

Xeon Silver 4216

8429 +12.3%

Xeon W-3223

8035 +7%

Core i7-1355U

7508

Ryzen 7 PRO 5750GE

7072 -5.8%

Xeon E5-2683 v3

6651 -11.4%

Geekbench 5 Single Core

Ryzen 9 8945HS

1871 +10.7%

M1 Ultra

1768 +4.6%

Core i7-1355U

1690

Ryzen 7 5700X

1630 -3.6%

Processor U300

1572 -7%

Geekbench 5 Multi Core

Core i3-14100

7910 +10.2%

Core i5-1250P

7551 +5.2%

Core i7-1355U

7177

Core Ultra 5 125U

6755 -5.9%

Ryzen 7 4700GE

6384 -11%

Passmark CPU Single Core

Ryzen 7 PRO 8840HS

3771 +5.7%

Ryzen 5 8400F

3677 +3%

Core i7-1355U

3569

Core i5-13420H

3493 -2.1%

Xeon E-2374G

3416 -4.3%

Passmark CPU Multi Core

Xeon E5-2690 v3

16543 +8.9%

Xeon W-11865MLE

15958 +5.1%

Core i7-1355U

15190

Core i7-6900K

14583 -4%

Core i7-1260U

14110 -7.1%