Intel Core i9-11900K (11900KF) CPU

MSRP 539 USD67% External
Keywords: cpudesktopflagshipintelintel-corerocket-lake

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Product Overview

Intel Core i9-11900K is the flagship of Intel's 11th-gen Core, Rocket Lake family. It is also available without integrated graphics in the form of i9-11900KF. Compared to the i7-11700K, this i9 CPU offers a small bump in maximum turbo frequency but is otherwise almost identical, making it a less compelling option that has been the case in previous generation Core processors.
Rocket Lake is based on its new Cypress Cove microarchitecture backported to the 14nm process. Intel claims that up to 22% IPC (instructions per clock) increase may be observed over the 10th-gen Comet Lake units under the best-case scenarios.
Another area where Intel improved is the integrated graphics, now named Intel UHD 750. It observes higher base and boost frequencies and includes more transistors.
Unlike other lower-priced units, the Core i9-11900K/KF uniquely defaults to 1:1 ratio of DRAM to memory controller when using DDR4-3200MHz memories. This is another of its advantages over the i7.
Alongside the i9-11900K, Intel also markets the Core i9-11900KF. The "F" designation means the i9-11900KF does not come with the integrated graphics. Intel debuted this concept in 2019 in order to salvage chips with defective GPUs that are otherwise perfect. As a result, the i9-11900KF shares with the i9-11900K all specifications except for the difference in integrated graphics. For desktop users with discrete graphics installed, the F-series chip may be an interesting option, thanks to its lower MSRP.
The other Core i9 models introduced with the i9-11900K/KF are the i9-11900, the iGPU-less i9-11900F, and the low-powered i9-11900T.

Ratings

What we found**

Pros
  • Powerful enough to power through pretty much any workload
  • Great CPU performance for the price
Cons
  • Only 8 cores in Rocket Lake's Core i9-11900K

What external reviewers found***

External score 67% (not directly comparable across industries)
Pros
  • Excellent gaming performance
  • Excellent cooling solution
  • Comfortable to use
  • Supports PCIe 4.0 SSDs
  • Extremely affordable
  • Extremely fast
Cons
  • No overclocking option
  • No multi-threaded performance
  • Loss of two cores makes overclocking more difficult
Read More

Price Comparison

Specifications

Connectivity

CPU Socket
FCLGA1200
PCI Express
20 lanes of 4.0 (1x16 + 1x4, 2x8 + 1x4, or 1x8 + 3x4)

Construction

Form Factor
Desktop microprocessor
Lithography
14 nm
Platform
Rocket Lake

Dimensions

Size | Depth
37.5 mm
Size | Width
37.5 mm

Function

Graphics
Operating Temperature
Max 100°C T Junction
Processor | Cores
8 cores
Processor | Threads
16 threads
Resolution
Security
Intel AES New Instructions, Secure Key, Intel OS Guard, Intel Trusted Execution, Execute Disable Bit , Intel Boot Guard
Supported Technologies
Intel Deep Learning Boost, Intel Turbo Boost Max 3.0, Intel vPro, Intel Hyper-Threading Technology, Intel Virtualization Technology, Enhanced Intel SpeedStep Technology
Thermal Solution
PCG 2019A

Performance

Cache
16 MB Intel Smart Cache
Frequency
3.5 GHz Base | 3.0 GHz TDP-down | 5.3 GHz single core Turbo
Memory | Capacity
Supports up to 128GB
Memory | Type
DDR4 3200MHz, max 2 channels, max 50GB/s bandwidth
Power Consumption
125 W TDP / 95 W TDP-down

Production

Debut
2021 Q1

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Launch Comparison
Clear List

3rd-Party Review Videos

External Reviews

techradar[1]

Reviewer score 61%
Reviewers from techradar have found the following***:
The Intel Core i9-11900K is a fine processor. No matter what test we threw at the little chunk of silicon, it was able handle it quickly and efficiently. Gaming, content creation and even just messing around on the desktop are all extremely quick, but it’s essentially the same experience you’ll get anywhere these days. We wish Intel skipped this generation and came back to deliver something valuable with its 12th-generation processors.
Find the original article here.
Pros
  • Extremely fast
  • Supports PCIe 4.0 SSDs
  • Comfortable to use
Cons
  • Lacks two cores
  • Loss of two cores

trustedreviews[2]

Reviewer score 70%
Reviewers from trustedreviews have found the following***:
The Intel Core i9-11900K is the most powerful processor I’ve seen for gaming. But the gains are minimal compared to significantly cheaper options. Power consumption and heat needs to be considered, too, so you know how much you’ll need to spend on a PSU and cooler.
Find the original article here.
Pros
  • Extremely affordable
  • Excellent gaming performance
  • Excellent cooling solution
Cons
  • No multi-threaded performance
  • No overclocking option

User Reviews

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References

  1. ^ Intel Core i9-11900K review. [techradar]. https://www.techradar.com/reviews/intel-core-i9-11900k. 2021-03-30. Retrieved 2021-04-03.
  2. ^ Intel Core i9-11900K Review. [trustedreviews]. https://www.trustedreviews.com/reviews/intel-core-i9-11900k. Retrieved 2021-04-03.

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These key takeaways ("pros" and "cons") and summaries are identified from third-party reviews. They may differ from the original texts.

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