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Intel Core i5-9400F

Intel Core i5-9400F in 2025: Is It Worth Getting This "Veteran" for a Budget Build?

Key Specifications: Coffee Lake in the Era of New Technologies

The Intel Core i5-9400F processor, released back in 2019, remains a popular choice for budget PCs even in 2025. Its Coffee Lake architecture (14 nm) features 6 cores and 6 threads, with a base clock speed of 2.9 GHz and turbo boost up to 4.1 GHz. The L3 cache is 9 MB, which is sufficient for most everyday tasks.

Key Features:

- No Integrated Graphics (the "F" designation in the name). A discrete graphics card is required for operation.

- Energy Efficiency: The TDP of 65 W reduces cooling requirements.

- Performance: In Geekbench 6 (2025), it scores about ~1368 points in single-threaded and ~4803 points in multi-threaded tests. In comparison, the Ryzen 5 3600 shows similar results but supports 12 threads.

The 14 nm manufacturing process in 2025 looks archaic compared to AMD's 7 nm Ryzen and Intel's 10 nm Alder Lake. However, this is not critical for basic tasks.

Compatible Motherboards: What to Choose in 2025?

The i5-9400F uses the LGA 1151 v2 socket, compatible with 300 series chipsets:

- H310/B360/H370 — basic options for office PCs. They support DDR4-2666 MHz but lack PCIe 4.0 and overclocking capabilities.

- Z390 — the top chipset with memory overclocking capabilities, although the processor itself does not support overclocking.

Examples of Motherboards:

- ASUS Prime B360M-A (2025 price: ~$60–$80) — optimal for a build without future upgrades.

- MSI Z390-A Pro (~$90–$110) — for enthusiasts planning to upgrade to i7-9700K.

Important! New motherboards for LGA 1151 are no longer being produced — only remnants are available on the market. An alternative is to purchase used ones, but this article focuses only on new devices.

Supported Memory: DDR4 as the Standard

The processor works with DDR4-2666 MHz (on H/B series chipsets). On Z390, memory can be overclocked, but the performance increase in games will be minimal (5–8%).

Recommendations:

- For office tasks: 8–16 GB (2x4 GB or 2x8 GB).

- For gaming: 16 GB (2x8 GB) with CL16 timings.

DDR5 is not supported — this is the main downside in 2025, where DDR5 has become the standard for new systems.

Power Supply: How Many Watts Are Needed?

With a TDP of 65 W, the i5-9400F does not require a powerful PSU. However, it's important to consider the graphics card:

- RTX 3050 or RX 6600: a 450–500 W power supply should suffice (e.g., EVGA 500 BR, ~$50).

- RTX 3060 or RX 6700 XT: a 550 W PSU is recommended (Corsair CX550M, ~$70).

Tip: Don’t skimp on the power supply. Cheap models (like Apevia) might work unstably under load.

Pros and Cons of the i5-9400F in 2025

Pros:

- Price: ~$120–$150 for a new processor (from stock).

- Energy Consumption: suitable for compact builds.

- Gaming: handles most titles at Full HD (for instance, Cyberpunk 2077 at medium settings gives ~60 FPS with an RTX 2060).

Cons:

- 6 threads: multitasking performance is weaker compared to the Ryzen 5 3600 (12 threads).

- Outdated platform: lacks PCIe 4.0, DDR5, USB 3.2 Gen 2x2.

- No upgrade potential: the next step would be to switch to the LGA 1700 or AM5 platform.

Use Cases: Where Is the i5-9400F Still Relevant?

1. Gaming. Paired with a graphics card like the RTX 3060 or RX 6600 XT, the processor provides a comfortable gaming experience at Full HD. For example, Call of Duty: Warzone 2.0 delivers stable 80–90 FPS on high settings.

2. Office Tasks. Working with documents, browsers, Zoom — no problems.

3. Multimedia. Streaming video, editing basic clips in Premiere Pro (but rendering will be slower compared to Ryzen).

Not suitable for:

- Intensive 3D modeling or rendering in Blender.

- Streaming without using NVENC on the graphics card.

Comparison with Competitors

1. AMD Ryzen 5 3600 (6 cores/12 threads, ~$130–$150):

- Better in multi-threaded tasks (+30% in Cinebench R23).

- Supports PCIe 4.0 (on B550/X570 boards).

- But higher power consumption (65 W vs. 95 W for Ryzen).

2. Intel Core i3-12100F (4 cores/8 threads, ~$100–$120):

- Higher IPC, better single-threaded performance (+15% in Geekbench 6).

- But fewer cores — worse multitasking.

3. AMD Ryzen 5 5500 (6 cores/12 threads, ~$140–$160):

- More modern 7 nm manufacturing process.

- PCIe 4.0 support, but requires an AM4 board.

Conclusion: The i5-9400F falls behind in multi-threading but wins on price in the secondary market.

Practical Assembly Tips

1. Motherboard: Choose a B365/B360 with a warranty (e.g., ASRock B365M-HDV). Avoid H310 due to slot limitations.

2. Cooling: The stock cooler is sufficient, but for quieter operation, consider the DeepCool GAMMAXX 400 (~$25).

3. Storage: An SSD is essential (Crucial P3 500 GB, ~$40) — HDDs will bottleneck performance.

4. Graphics Card: Opt for models with 8 GB VRAM (GTX 1660 Super, RTX 3050).

5. Case: Ensure it supports the motherboard size (Micro-ATX is most common).

Sample Build:

- CPU: i5-9400F ($130)

- Graphics Card: RX 6600 ($220)

- Memory: 16 GB DDR4-2666 ($45)

- Storage: 1 TB NVMe ($60)

- PSU: 550 W ($70)

- Total: ~$525 without the case.

Final Conclusion: Who Should Consider the i5-9400F?

This processor is worth considering if:

- The budget is tight, and new platforms (AM5/LGA 1700) are not affordable.

- You need a PC for gaming at Full HD or office work.

- You do not plan to upgrade in the next 2–3 years.

Alternative: If you can add $50–$70 to your budget, it's better to go for the Ryzen 5 3600 or i3-13100F for a more modern platform. But for "here and now", the i5-9400F remains a viable option, especially if you can find components on sale.

Basic

Label Name

Intel

Platform

Desktop

Launch Date

January 2019

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.

i5-9400F

Code Name

Coffee 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

2.90 GHz

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.

4.10 GHz

Intel Turbo Boost Technology 2.0 Frequency

4.10 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.

2.0

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.

L3 Cache

9 MB

CPU Socket

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

FCLGA1151

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

65 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

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.

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 | Intel® AVX2

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.

9 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 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 OS Guard

Yes

Benchmarks

Geekbench 6

Single Core Score

1368

Geekbench 6

Multi Core Score

4803

Geekbench 5

Single Core Score

1044

Geekbench 5

Multi Core Score

4381

Passmark CPU

Single Core Score

2445

Passmark CPU

Multi Core Score

9492

Compared to Other CPU

Geekbench 6 Single Core

Core i9-9900X

1455 +6.4%

Core i5-6600K

1409 +3%

Core i5-9400F

1368

Core i5-9300HF

1326 -3.1%

Core i5-10310U

1284 -6.1%

Geekbench 6 Multi Core

Xeon E5-2640 v3

5428 +13%

Core i7-7700K

5093 +6%

Core i5-9400F

4803

Xeon D-2141I

4524 -5.8%

Xeon E-2224

4223 -12.1%

Geekbench 5 Single Core

Core i7-9700T

1089 +4.3%

Xeon Max 9480

1068 +2.3%

Core i5-9400F

1044

Ryzen 7 4700U

1022 -2.1%

Core i7-7700T

1002 -4%

Geekbench 5 Multi Core

Core i5-9500F

4836 +10.4%

Xeon Gold 6252

4621 +5.5%

Core i5-9400F

4381

EPYC 9274F

4148 -5.3%

Core i9-10980HK

3950 -9.8%

Passmark CPU Single Core

Core i5-7640X

2532 +3.6%

Core i9-7980XE

2494 +2%

Core i5-9400F

2445

Xeon Silver 4309Y

2420 -1%

Core i7-8706G

2383 -2.5%

Passmark CPU Multi Core

Xeon D-1567

10447 +10.1%

Xeon E-2234

9961 +4.9%

Core i5-9400F

9492

Core i5-1038NG7

9123 -3.9%

Ryzen 3 7320C

8614 -9.2%