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How Many Cores Do Intel Core i5-9400F CPUs Have?

Find out how many cores Intel's 9th generation Core i5 9400F processors have.

9400F Number of Cores Timur Garifov / Unsplash

Last Updated: June 23, 2022

Written by Kevin Jones

In addition to discussing the number of cores in the 9400F, this article will discuss recommendations for compatible motherboards, CPU coolers, and memory.

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How Many Cores Do 9400F CPUs Have?

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Intel's 9400F CPUs have 6 cores. The processor has a 2.90 GHz base frequency and supports a 4.10 GHz max turbo frequency.

Check out our Recommended Motherboards for the 9th Gen 9400F below.

How Many Threads Does the 9400F Have?

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The Intel Core i5-9400F has 6 threads.

Intel's 9th gen Core i5 processors do not support Hyper-Threading. Each of the 6 cores supports a single thread.

At What Frequency Does the 9400F Run?

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The processor has a 2.90 GHz base frequency and supports a 4.10 GHz max turbo frequency.

What Does the F Suffix in 9400F Mean?

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Processor Name Suffix Meaning
F "F" means it requires discrete graphics. In other words, it doesn't have integrated graphics (basically a GPU built into the processor), thus requiring a standalone graphics card.

The 9400F model name has an F suffix. F-suffixed CPUs do not contain integrated graphics, and a separate graphics card is required.

The 9400F model name doesn't have a K suffix. Non-K CPUs can not be overclocked.

CPU Cooling for the 9400F

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A CPU cooler's TDP (Thermal Design Power) rating indicates how much heat it can dissipate in watts. If the cooler can't keep your CPU cool enough, your CPU may throttle (slow down), and your cooler will constantly run at full speed.

Intel CPU specifications indicate this power dissipation number as "Processor Base Power."

The Core i5-9400F has a TDP of 65 watts.

A CPU cooler can still work with a lower TDP rating than the TDP of a CPU. However, the CPU will eventually throttle itself to a lower frequency to allow itself to cool.

The CPU may not achieve or maintain maximum turbo speeds without adequate cooling.

Learn more in Choosing the Best CPU Cooler for Intel's Core i5-9400F.

Motherboard Requirements for Core i5-9400F Processors

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For Intel's 9th generation Core i5 9400F processor, you'll need a motherboard with an LGA 1151 socket and 300-series chipset.

Motherboards for Intel processors are made with chipsets provided by Intel. Each chipset offers a unique set of capabilities. However, motherboards must explicitly support features and capabilities for you to use them. Verify that a motherboard supports the features and capabilities you desire.

The lack of a "K" suffix in the model name 9400F means it doesn't support overclocking. Because of this, there is no need for you to use the top of the line Z390 or Z370 chipsets which support overclocking. Instead, you can use a motherboard with Intel's other 300-series desktop chipsets listed below.

For compatiblity with Intel's 11th generation Core processors, you can use any of the 300-series chipsets: Z390, Z370, H370, B365, B360, H310. These are roughly sorted from most to least functionality.

The Q370 chipset is also compatible, but is intended for business use cases; its availability in stand-alone motherboards is limited.

For a detailed comparison of these chipsets, check out my article Which Chipsets Work With Intel's Core i5-9400F CPU?.

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Best Feature Motherboard: MSI Z390-a PRO

  • Our recommended feature-rich motherboard to pair with the Core i5-9400F is MSI's Z390-A PRO motherboard: MSI Z390-A PRO MSI Z390-A PRO Check Price on Amazon Amazon Affiliate Link
    • One NVMe M.2 slots at PCIe 3.0 x4 speeds.
    • Up to 6 SATA 6 Gb/s ports (When using an M.2 SATA device, the SATA2 port will be unavailable).
    • The two USB 3.1 Gen2 ports offer 10 Gbps USB speeds.
    • One 1 Gb Ethernet port is faster than most Internet speeds.
    • This board includes various headers for accessories, including a 4-pin Water Pump connector.
    • Check the latest price of the MSI Z390-A PRO on Amazon (affiliate link).

Best Value Motherboard: ASUS Prime Z390-P

  • Our recommended value motherboard to pair with the Core i5-9400F is ASUS's Prime Z390-P motherboard: ASUS Prime Z390-P ASUS Prime Z390-P Check Price on Amazon Amazon Affiliate Link
    • Two NVMe M.2 x4 slots at PCIe 3.0 speeds.
    • Up to 4 SATA 3.0 ports, depending on M.2 configuration.
    • USB 3.2 Gen 2x1 offers 10 Gbps USB speeds.
    • One 1 Gb Ethernet port is faster than most Internet speeds.
    • This board includes various headers and ports for accessories, including a liquid pump header and extra x1 PCIe slots.
    • Check the latest price of the ASUS Prime Z390-P on Amazon (affiliate link).
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Locked Intel CPUs may come with a stock CPU cooler. These CPU models do not have a "K" in the name. While stock coolers will prevent your CPU from overheating, your CPU will throttle its performance during games and other intensive tasks. Higher TDP coolers will keep your CPU at turbo speeds for longer durations. Stock coolers are often quite loud at their maximum speed.

Best AIO Liquid Cooler: Enermax Liqmax III 360

  • This Enermax liquid cooler has an excellent cooling capability with a 360-watt TDP (Thermal Design Power).
  • Supports a variety of CPU sockets, including Intel LGA 2066, 2011-3, 2011, 1700, 1200, 1366, 1156, 1155, 1151, 1150 and AMD AM4, AM3+, AM3, AM2+, AM2, FM2+, FM2, FM1.
  • Quiet operation at 14-27 dBA.
  • Make sure your computer case dimensions support this, as it will take up a decent amount of space! Enermax Liqmax III 360 Enermax Liqmax III 360 Check Price on Amazon Amazon Affiliate Link

Best Dual-Fan Air CPU Cooler: Be Quiet! BK022 Dark Rock Pro 4

  • Quiet operation at 12.8-24.3 dB.
  • The dual fans (120 mm and 135 mm) do a great job of cooling LGA 1151 CPUs with a 250-watt TDP (Thermal Design Power).
  • Supports a variety of CPU sockets, including Intel LGA 1150, 1151, 1155, 1156, 1366, 2011(-3) square ILM, 2066 and AMD AM2, AM2+, AM3, AM3+, AM4, FM1, FM2, FM2+.
  • Smaller models are available if you don't need as much cooling ability.
  • You can even add another 120 mm fan to it for more cooling! be quiet! BK022 Dark Rock Pro 4, 250-watt TDP be quiet! BK022 Dark Rock Pro 4, 250-watt TDP Check Price on Amazon Amazon Affiliate Link

Runner Up - Dual-Fan Air CPU Cooler: Noctua NH-D15

  • Dual 140 mm fans provide 220-watt TDP (183 NSPR) of cooling capability.
  • Supports a variety of CPU sockets, including Intel LGA 1700, 1200, 1150, 1151, 1155, 1156, 2011, 2066 and AMD AM4, AM3, AM3+, AM2, AM2+, FM2, FM2+.
  • Quiet operation at 24.6 dBA. Noctua NH-D15, Premium CPU Cooler Noctua NH-D15, Premium CPU Cooler Check Price on Amazon Amazon Affiliate Link
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Before purchasing memory, review your motherboard specification to verify which speeds are supported. For example, if a DDR4 motherboard stated that it supports "DDR4 3400(O.C.) / 3333(O.C.) / 3300(O.C.) / 3200 / 3000," that would mean that it could support DDR4-3400, DDR4-3333, and DDR4-3300 with memory overclocking, and DDR4-3200 and DDR4-3000 at stock speeds. Motherboard specifications also indicate the maximum capacity per stick of RAM (DIMM) and across all slots.

  • At an effective frequency of 2666 MHz, this memory hits the fastest DDR4 speed supported by Intel's Core i5 9400F CPU without overclocking.
  • The low-profile form factor ensures that the heat spreaders don't get in the way of other devices, including your CPU heatsink. Corsair Vengeance LPX 32GB (2x16GB) 2666MHz DDR4 Corsair Vengeance LPX 32GB (2x16GB) 2666MHz DDR4 Check Price on Amazon Amazon Affiliate Link

Learn More About the Intel Core i5-9400F

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You can find detailed 9400F specifications on Intel's site.

Other Considerations When Building a PC

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Want to brush up on other new technologies to consider when building a computer? Check out these articles: