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Intel Pentium 4405U

Intel Pentium 4405U: A Budget Processor for Everyday Tasks

April 2025

Introduction

The Intel Pentium 4405U is a processor released in 2016, still commonly found in budget laptops. Despite its age, it remains relevant for basic tasks due to its energy efficiency and low cost. In this article, we will explore its architecture, performance, use cases, and compare it with modern counterparts.

Architecture and Process Technology

SkyLake and 14 nm: The Foundation of Efficiency

The processor is built on the SkyLake architecture (6th generation Intel Core) with a 14 nm manufacturing process. This has allowed for reduced power consumption and improved thermal characteristics.

- Cores and Threads: 2 cores, 4 threads thanks to Hyper-Threading.

- Clock Frequencies: Base clock speed of 2.1 GHz, turbo mode is not available.

- Integrated Graphics: Intel HD Graphics 510 with a base frequency of 300 MHz and dynamic boost up to 950 MHz. Supports DirectX 12, OpenGL 4.5, and 4K output via DisplayPort.

Architecture Features:

- Improved IPC (instructions per cycle) compared to previous generations.

- Supports DDR4-2133 and LPDDR3-1866 memory.

- Low thermal output, making it easier to design cooling systems.

Power Consumption and TDP

TDP of 15 Watts — a key parameter that defines the use cases for the processor.

- Energy Efficiency: Allows for the creation of thin laptops without active cooling (in some models).

- Thermal Characteristics: Even under load, temperatures rarely exceed 60–70°C, which reduces fan noise.

Example: In ultrabooks like the Lenovo IdeaPad 3 (2025) with the Pentium 4405U, the fan is almost inaudible while working in a browser or with documents.

Performance in Real Tasks

Office Work

- Microsoft Office, Google Docs: The processor handles text editing, spreadsheets, and presentations without lag.

- Multitasking: Working with 10–15 browser tabs plus messaging apps is possible, but overload might cause stutters.

Multimedia

- Video: Streaming 1080p/60 FPS and 4K (with hardware acceleration) works smoothly.

- Photo Editors: Lightroom Mobile or basic retouching in Photoshop is feasible, but filter processing can be slow.

Gaming

- Integrated HD 510 graphics: Runs only lightweight projects:

- Minecraft (30–40 FPS on low settings).

- CS:GO (720p, 25–30 FPS).

- Among Us, Stardew Valley—without issues.

Turbo Mode: Absent, so frequencies are fixed at 2.1 GHz. This limits performance under peak loads.

Use Cases

The processor is suitable for:

1. Students — for studies, writing papers, and Zoom conferences.

2. Office Workers — handling documents and emails.

3. General Users — web surfing, watching YouTube, social media.

Not Suitable for:

- Gamers (except for casual games).

- Designers, programmers, video engineers.

Battery Life

- Usage Time: In laptops with a 40–50 Wh battery (e.g., ASUS VivoBook 15) — 6–8 hours with moderate use.

- Energy-Saving Technologies:

- Intel SpeedStep — dynamic frequency adjustment.

- C-states — turning off unused components.

- Display optimization through Intel Display Power Saving Technology.

Tip: For maximum battery life, choose models with IPS screens and SSDs (not HDDs).

Comparison with Competitors

AMD A9-9420 (2017)

- Pros: Better graphics (Radeon R5).

- Cons: Higher TDP (15–25 Watts), worse optimization for Windows.

Intel Core i3-6006U (2016)

- Pros: 10–15% higher performance in multi-threaded tasks.

- Cons: Laptop prices are 20–30% higher ($450–600).

Apple M1 (2020)

- Not a direct competitor, but illustrates the increase in efficiency over 9 years: M1 is 4–5 times faster, with similar TDP.

Conclusion: The Pentium 4405U is a choice for those looking for a cheap device right now.

Pros and Cons

Strengths:

- Low price of laptops ($300–450).

- Quiet operation.

- Sufficient power for basic tasks.

Weaknesses:

- No turbo mode.

- Weak integrated GPU.

- Only 2 cores — limited multitasking capability.

Laptop Selection Recommendations

1. Device Type: Ultrabooks (Acer Swift 1) or budget models (HP 15s).

2. Memory: Minimum of 8 GB RAM + 256 GB SSD.

3. Screen: IPS panel for comfortable work.

4. Check for: USB-C availability, Wi-Fi 5 (or 6), weight (preferably under 1.5 kg).

Caution: Avoid models with HDDs and 4 GB of RAM — these are performance "killers."

Final Conclusion

The Intel Pentium 4405U in 2025 is a choice for undemanding users. It is suitable for:

- Working with texts and browsing the internet.

- As a secondary laptop for travel.

- For seniors or children who do not need high performance.

Key Benefits: Low price, quiet operation, and battery life. If the budget allows for $500 or more, it’s better to look at 12th generation Intel Core i3 processors or AMD Ryzen 3 7300U — they will provide future-proofing.

Prices as of April 2025:

- Laptops with Pentium 4405U: $300–450.

- Alternatives with Core i3: $450–600.

- Devices with Apple M1: starting from $800 (new models are not being released, but stock remains).

Basic

Label Name

Intel

Platform

Mobile

Launch Date

July 2015

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.

4405U

Code Name

SkyLake

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.

Basic Frequency

2.10 GHz

Intel Turbo Boost Technology

Intel® Turbo Boost Technology dynamically increases the processor's frequency as needed by taking advantage of thermal and power headroom to give you a burst of speed when you need it, and increased energy efficiency when you don’t.

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

CPU Socket

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

FCBGA1356

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.

14 nm

TDP

15 W

Max. Operating Temperature

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

100°C

PCI Express Version

PCI Express Revision is the supported version of the PCI Express standard. Peripheral Component Interconnect Express (or PCIe) is a high-speed serial computer expansion bus standard for attaching hardware devices to a computer. The different PCI Express versions support different data rates.

2.0

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.

Intel 64

Intel® 64 architecture delivers 64-bit computing on server, workstation, desktop and mobile platforms when combined with supporting software.¹ Intel 64 architecture improves performance by allowing systems to address more than 4 GB of both virtual and physical memory.

Yes

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

PCI Express Configurations

PCI Express (PCIe) Configurations describe the available PCIe lane configurations that can be used to link to PCIe devices.

1x4 | 2x2 | 1x2+2x1 and 4x1

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.

DDR4-1866/2133 | LPDDR3-1600/1866

Max Memory Size

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

32 GB

Memory Channels

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

Bus Speed

4 GT/s

Max Memory Bandwidth

Max Memory bandwidth is the maximum rate at which data can be read from or stored into a semiconductor memory by the processor (in GB/s).

34.1 GB/s

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® HD Graphics 510

Graphics Base Frequency

Graphics Base frequency refers to the rated/guaranteed graphics render clock frequency in MHz.

300 MHz

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.

950 MHz

Graphics Video Max Memory

32 GB

4K Support

Yes | at 60Hz

DirectX Support

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

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.

4096x2304@24Hz

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.

4096x2304@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.

4096x2304@60Hz

Max Resolution (VGA)

N/A

Number of Displays Supported

Graphics Output

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

eDP/DP/HDMI/DVI

Miscellaneous

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

Enhanced Intel SpeedStep Technology

Enhanced Intel SpeedStep® Technology is an advanced means of enabling high performance while meeting the power-conservation needs of mobile systems. Conventional Intel SpeedStep® Technology switches both voltage and frequency in tandem between high and low levels in response to processor load. Enhanced Intel SpeedStep® Technology builds upon that architecture using design strategies such as Separation between Voltage and Frequency Changes, and Clock Partitioning and Recovery.

Yes

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.

2 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 Clear Video HD Technology

Intel® Clear Video HD Technology, like its predecessor, Intel® Clear Video Technology, is a suite of image decode and processing technologies built into the integrated processor graphics that improve video playback, delivering cleaner, sharper images, more natural, accurate, and vivid colors, and a clear and stable video picture. Intel® Clear Video HD Technology adds video quality enhancements for richer color and more realistic skin tones.

Yes

Intel Clear Video Technology

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 Flex Memory Access

Yes

Intel OS Guard

OpenGL Support

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

4.4

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

395

Geekbench 6

Multi Core Score

825

Geekbench 5

Single Core Score

450

Geekbench 5

Multi Core Score

1049

Passmark CPU

Single Core Score

1190

Passmark CPU

Multi Core Score

2097

Compared to Other CPU

Geekbench 6 Single Core

A10-5800K

461 +16.7%

Xeon E5645

425 +7.6%

Pentium 4405U

395

A10-5757M

362 -8.4%

A6-4400M

317 -19.7%

Geekbench 6 Multi Core

Ryzen Embedded R1102G

1040 +26.1%

Core i3-L13G4

941 +14.1%

Pentium 4405U

825

A8-5550M

678 -17.8%

Celeron 3215U

587 -28.8%

Geekbench 5 Single Core

Core m3-6Y30

487 +8.2%

Celeron G1620T

469 +4.2%

Pentium 4405U

450

PRO A12-8870E

427 -5.1%

Core i7-2715QE

405 -10%

Geekbench 5 Multi Core

Core i3-6100U

1195 +13.9%

Core i5-2410M

1102 +5.1%

Pentium 4405U

1049

Pentium G840

942 -10.2%

A6-3500

863 -17.7%

Passmark CPU Single Core

Xeon E5-2648L v3

1292 +8.6%

A6-5357M

1243 +4.5%

Pentium 4405U

1190

FX-8100

1137 -4.5%

Core i3-390M

1090 -8.4%

Passmark CPU Multi Core

Core i7-3667U

2420 +15.4%

Xeon E3-1220L

2274 +8.4%

Pentium 4405U

2097

Core i3-2120

1963 -6.4%

Celeron G3900TE

1850 -11.8%