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Intel Pentium Gold G6405T

Intel Pentium Gold G6405T: Budget Processor for Basic Tasks

April 2025

1. Key Characteristics: Architecture and Key Features

Codename and Manufacturing Process

The Intel Pentium Gold G6405T belongs to the Comet Lake family (10th generation), released in 2020. Despite its age, it remains popular in the budget segment due to its low power consumption (TDP of 35W) and 14nm manufacturing process. While 14nm technology is already outdated compared to modern 7nm and 5nm solutions, it remains satisfactory for office tasks and simple multimedia systems.

Cores, Threads, and Cache

The processor is equipped with 2 cores and 4 threads thanks to Hyper-Threading. This allows it to handle lightweight multitasking: for example, working on documents + a browser + streaming video. The L3 cache size is 4MB, which is typical for the Pentium series.

Integrated Graphics

The Intel UHD Graphics 610 is basic graphics designed to output images at resolutions up to 4K (60 Hz via HDMI or DisplayPort). It is suitable for:

- Video playback (including HDR).

- Undemanding games (such as Minecraft or League of Legends at low settings).

Price and Positioning

The price of the new processor in 2025 is $65–75. This makes it one of the most affordable CPUs with Hyper-Threading support.

2. Compatible Motherboards: Sockets and Chipsets

LGA 1200 Socket

The processor uses the LGA 1200 socket, compatible with the 400 and 500 series chipsets:

- H410/B460/H470: Budget motherboards with basic functionality (e.g., ASUS Prime H410M-K).

- Z490/Z590: Enthusiast motherboards with overclocking support (although the G6405T cannot be overclocked).

Points to Consider

- PCIe Ports: Only version 3.0, which limits NVMe SSD speeds.

- BIOS: Using motherboards with 500 series chipsets may require a firmware update.

Examples of Motherboards

- Gigabyte H410M S2H: A compact board priced at $70–80 with HDMI and DVI.

- ASRock B560M-HDV: Supports PCIe 4.0 (relevant for upgrading to more powerful CPUs).

3. Supported Memory: DDR4 and Limitations

Type and Frequency

The processor works with DDR4-2666 MHz in dual-channel mode. The maximum capacity is 128GB, but for an office PC, 8–16GB is sufficient.

Why Not DDR5?

The Comet Lake architecture does not support DDR5. If modern memory is needed, a transition to the Intel 12th generation platform or newer is required.

Recommended Modules

- Kingston ValueRAM 8GB DDR4-2666 ($25 per module).

- Patriot Signature Line 16GB (2x8GB) DDR4-2666 ($50).

4. Power Supply: Power Calculation

System Power Consumption

The processor itself consumes up to 35W, but considering other components (motherboard, SSD, HDD, fans), the total load rarely exceeds 100–120W.

Recommendations

- 300–400W Power Supply with an 80+ Bronze certification (e.g., EVGA 400W — $40).

- If planning to install a discrete graphics card (like the GTX 1650), choose a PSU rated 450–500W.

Important! Don’t skimp on the PSU: cheap models may operate unreliably or damage components.

5. Pros and Cons of the Pentium Gold G6405T

Advantages

- Low power consumption (suitable for compact PCs and systems without active cooling).

- Integrated graphics for basic tasks.

- Affordable price.

Disadvantages

- Only 2 cores: problems with multi-threaded applications (video editing, 3D rendering).

- Outdated 14nm manufacturing process.

- No support for PCIe 4.0 and DDR5.

6. Usage Scenarios: Where the Processor Excels

Office and Study

- Working with documents, browsers, Zoom.

- Connecting two monitors via HDMI and VGA.

Multimedia

- Watching 4K video on a Smart TV via HDMI.

- Using as a media center (e.g., with Kodi or Plex).

Gaming

- Light projects: CS:GO (60 FPS on low settings), Stardew Valley, Among Us.

What to Avoid

- Game streaming.

- Running Adobe Premiere or Blender.

7. Comparison with Competitors

AMD Athlon 3000G

- Price: $60–70.

- Pros: Vega 3 graphics are stronger than UHD 610.

- Cons: No Hyper-Threading, only 2 cores/2 threads.

Intel Celeron G5920

- Price: $50.

- Pros: Cheaper.

- Cons: No Hyper-Threading, weaker in multitasking.

Conclusion: The G6405T outperforms the Celeron, but falls short against the Athlon in graphics performance.

8. Assembly Tips

Optimal Configuration

- Motherboard: H410/B460.

- Memory: 8–16GB DDR4-2666.

- Storage: 256GB NVMe SSD (e.g., Kingston A2000 — $35).

Cooling

The standard box cooler is sufficient: temperatures under load rarely exceed 60°C.

Case

Select compact Micro-ATX cases (e.g., Fractal Design Core 1100 — $50).

9. Final Verdict: Who is the G6405T For

This processor is an ideal choice for:

1. Office PCs on a minimal budget.

2. Home theaters (HTPCs).

3. Backup systems (for browsing or printing).

Why Choose It?

- Low price.

- Energy efficiency.

- Availability of integrated graphics.

However, for gaming, video editing, or AI work, consider more modern solutions (e.g., Intel Core i3-12100 or AMD Ryzen 3 5300G).

If you're building a PC for basic tasks and want to save money, the Pentium Gold G6405T remains relevant even in 2025. But remember: upgrading on this platform will be limited.

Basic

Label Name

Intel

Platform

Desktop

Launch Date

March 2021

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.

G6405T

Code Name

Comet 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.

Basic Frequency

3.50 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

Intel Turbo Boost Max Technology 3.0

Intel® Turbo Boost Max Technology 3.0 identifies the best performing core(s) on a processor and provides increased performance on those cores through increasing frequency as needed by taking advantage of power and thermal headroom.

L3 Cache

4 MB

CPU Socket

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

FCLGA1200

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

35 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.

3.0

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.

Up to 1x16 | 2x8 | 1x8+2x4

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.

DDR4-2666

Max Memory Size

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

128 GB

Memory Channels

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

Bus Speed

8 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).

41.6 GB/s

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® UHD Graphics 610

Graphics Base Frequency

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

350 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.

1.05 GHz

Graphics Video Max Memory

64 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.

4096x2160@30Hz

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

Number of Displays Supported

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.

4 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 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 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 InTru 3D Technology

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.

4.5

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 5

Single Core Score

603

Geekbench 5

Multi Core Score

1025

Passmark CPU

Single Core Score

2171

Passmark CPU

Multi Core Score

3746

Compared to Other CPU

Geekbench 5 Single Core

Xeon Silver 4114T

650 +7.8%

Core i7-3537U

626 +3.8%

Pentium Gold G6405T

603

Xeon E7-8870 v3

582 -3.5%

Xeon E5-2650

563 -6.6%

Geekbench 5 Multi Core

Athlon Silver 3050U

1173 +14.4%

Core i5-2390T

1096 +6.9%

Pentium Gold G6405T

1025

Core i7-3517UE

931 -9.2%

A8-4500M

853 -16.8%

Passmark CPU Single Core

Xeon E5-1620 v4

2228 +2.6%

Xeon E5-1660 v4

2202 +1.4%

Pentium Gold G6405T

2171

Core i5-7287U

2145 -1.2%

Xeon E3-1290 v2

2120 -2.3%

Passmark CPU Multi Core

Pentium Gold G6500

4145 +10.7%

Core i3-10110U

3924 +4.8%

Pentium Gold G6405T

3746

Core i7-6660U

3549 -5.3%

Core i3-4150

3384 -9.7%