Disclosure: This post may contain affiliate links.

How Many Cores Do Intel Core i9-11900K CPUs Have?

Find out how many cores Intel's 11th generation Core i9 11900K processors have.

Motherboard Timur Garifov / Unsplash

Last Updated: May 4, 2022

Written by Kevin Jones

In addition to discussing the number of cores in the 11900K, this article will discuss recommendations for CPUs and compatible motherboards, CPU coolers, and memory.

Check another CPU:

How Many Cores Do 11900K CPUs Have?

Section Link

Intel's 11900K CPUs have 8 cores. The processor has a 3.50 GHz base frequency and supports a 5.30 GHz max turbo frequency.

Check out our Recommended Motherboards for the 11th Gen 11900K below.

Intel Core i9-11900K Intel Core i9-11900K Check Price on Amazon Amazon Affiliate Link

How Many Threads Does the 11900K Have?

Section Link

The Intel Core i9-11900K has 16 threads.

For Intel's 11th gen processors, Hyper-Threading is available for each core. Hyper-Threading provides two threads for each of the 8 cores on the 11900K.

At What Frequency Does the 11900K Run?

Section Link

The processor has a 3.50 GHz base frequency and supports a 5.30 GHz max turbo frequency.

What Does the K Suffix in 11900K Mean?

Section Link
Processor Name Suffix Meaning
K "K" means it's an unlocked CPU. Unlocked CPUs have configurable frequencies and thus support overclocking. Your motherboard must support overclocking to overclock unlocked CPUs. Motherboards with Z-series chipsets typically support overclocking. Learn more about what each chipset supports in my article Which Chipsets Work With Intel's Core i9-11900K CPU?.

The 11900K model name doesn't have an F suffix. Non-F CPUs contain integrated graphics, and a separate graphics card isn't required if your motherboard includes video-output connectors (e.g., HDMI).

The 11900K model name has a K suffix. K-suffixed CPUs can be overclocked with a compatible motherboard.

Motherboards with a Z-series chipset typically support overclocking. For example, motherboards with the Z590 chipset usually support overclocking Intel's 11th Gen Core CPUs. Learn more about what each chipset supports in my article Which Chipsets Work With Intel's Core i9-11900K CPU?.

CPU Cooling for the 11900K

Section Link

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 i9-11900K has a TDP of 125 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 What is the Best Type of CPU cooler for a Gaming PC?

Motherboard Requirements for Core i9-11900K Processors

Section Link

For Intel's 11th generation Core i9 11900K processor, you'll need a motherboard with an LGA 1200 socket and a compatible 500-series or 400-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 "K" in the model name 11900K means it's an unlocked processor that supports overclocking. You will need a motherboard with the Z590 or Z490 chipset to support CPU overclocking.

For compatiblity with Intel's 11th generation Core processors, you can use any of the 500-series chipsets: Z590, H570, B560, H510. These are roughly sorted from most to least functionality. The W580 and Q570 chipsets are also compatible, but are intended for workstation and business use cases; their availability in stand-alone motherboards is limited.

While the budget-friendly 400-series B460 and H410 won't work with the 11th generation Core processors, the Z490 and H470 400-series chipsets are compatible. However, these chipsets were originally designed for the 10th generations Core processors, and will limit the capabilities of your system. The W480 and Q470 chipsets are also compatible, but are intended for workstation and business use cases; their 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 i9-11900K CPU?.

Section Link

Best Feature Motherboard: ASUS ROG Maximus XIII Hero

  • Our recommended feature-rich motherboard to pair with the Core i9-11900K is ASUS's ROG Maximus XIII Hero: ASUS ROG Maximus XIII Hero ASUS ROG Maximus XIII Hero Check Price on Amazon Amazon Affiliate Link
    • Four NVMe M.2 slots, which is great! (two @ PCIe 4.0 speeds, two @ PCIe 3.0 speeds).
    • This board includes various headers for accessories, including 3 ARGB headers for lighting control and separate liquid pump header.
    • Audio noise canceling and an optical audio output port
    • Z590 chipset supports overclocking for K-prefixed CPUs.
    • PCIe 4.0 support
    • Wi-Fi 6E makes it easy to reach the fastest speeds and future-proof your Wi-Fi system.
    • Bluetooth 5.2 is great for streaming music to Bluetooth headphones.
    • Two 2.5 Gb Ethernet ports are faster than most Internet speeds with room to spare for file transfers.
    • USB 3.2 Gen 2x2 offers 20 Gbps USB speeds!
    • Check the latest price of the ASUS ROG Maximus XIII Hero on Amazon (affiliate link).

Best Value Motherboard: MSI Z590 PRO WiFi ProSeries

  • Our recommended value motherboard to pair with the Core i9-11900K is MSI's Z590 PRO WiFi ProSeries motherboard: MSI Z590 PRO WiFi ProSeries MSI Z590 PRO WiFi ProSeries Check Price on Amazon Amazon Affiliate Link
    • Three NVMe M.2 slots, which is pretty good (one @ PCIe 4.0 speeds, two @ PCIe 3.0 speeds).
    • PCIe 4.0 support
    • Z590 chipset supports overclocking for K-prefixed CPUs.
    • Wi-Fi 6E makes it easy to reach the fastest speeds and future-proof your Wi-Fi system.
    • Bluetooth 5.2 is great for streaming music to Bluetooth headphones.
    • Two 2.5 Gb Ethernet ports are faster than most Internet speeds with room to spare for file transfers.
    • USB 3.2 Gen 2x2 offers 20 Gbps USB speeds!
    • Check the latest price of the MSI Z590 PRO WiFi ProSeries on Amazon (affiliate link).
Section Link

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: 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, 1156, 1155, 1151, 1150, 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

Runner Up - Dual-Fan Air CPU Cooler: Thermaltake TOUGHAIR 510

  • This CPU cooler doesn't have any fancy LED lights, but the dual 120 mm fans do a great job of cooling LGA 1200 CPUs.
  • Suppose you think this cooler will take up too much space. In that case, Thermaltake has a few single-fan TOUGHAIR variants which use different orientations.
  • This CPU cooler has a 2000 RPM max speed for optimal cooling.
  • 180-watt TDP (Thermal Design Power). Thermaltake TOUGHAIR 510 Thermaltake TOUGHAIR 510 Check Price on Amazon Amazon Affiliate Link
Section Link

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 3200 MHz, this memory hits the fastest DDR4 speed supported by Intel's Core i9 11900K 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) 3200MHz DDR4 Corsair Vengeance LPX 32GB (2X16GB) 3200MHz DDR4 Check Price on Amazon Amazon Affiliate Link

Learn More About the Intel Core i9-11900K

Section Link

Other Considerations When Building a PC

Section Link

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