Intel Core i9-11900K vs Core i9-9920X

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Combined performance score

i9-9920X
16.40

Core i9-11900K outperforms Core i9-9920X by 1% in our combined benchmark results.

General info

Comparing Core i9-9920X and Core i9-11900K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking351347
Place by popularitynot in top-100not in top-100
Value for money15.7847.48
Market segmentDesktop processorDesktop processor
SeriesIntel Core i9no data
Architecture codenameSkylake (server) (2017−2019)Rocket Lake (2021)
Release date19 October 2018 (5 years old)16 March 2021 (3 years old)
Launch price (MSRP)$1,189no data
Current price$567 (0.5x MSRP)$290
Value for money

Performance per price, higher is better.

i9-11900K has 201% better value for money than i9-9920X.

Technical specs

Core i9-9920X and Core i9-11900K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores12 (Dodeca-Core)8 (Octa-Core)
Threads2416
Base clock speed3.5 GHz3.5 GHz
Boost clock speed4.5 GHz5.2 GHz
Bus support4 × 8 GT/sno data
L1 cache64 KB (per core)64K (per core)
L2 cache1 MB (per core)256K (per core)
L3 cache19.25 MB (shared)16 MB (shared)
Chip lithography14 nm14 nm
Die size484 mm2no data
Maximum core temperature92 °C100 °C
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility++
Unlocked multiplierYesYes

Compatibility

Information on Core i9-9920X and Core i9-11900K compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11
SocketFCLGA2066FCLGA1200
Power consumption (TDP)165 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9920X and Core i9-11900K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI++
AVX++
vProno data+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX++
Idle Statesno data+
Thermal Monitoringno data+
SIPPno data+
Turbo Boost Max 3.0++
StatusDiscontinuedLaunched

Security technologies

Core i9-9920X and Core i9-11900K technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDB++
Secure Keyno data+
Identity Protectionno data+
SGXno data-
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9920X and Core i9-11900K are enumerated here.

VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-9920X and Core i9-11900K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2666DDR4
Maximum memory size128 GB128 GB
Max memory channels42
Maximum memory bandwidth85 GB/s50 GB/s
ECC memory support--

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AIntel UHD Graphics 750
Max video memoryno data64 GB
Quick Sync Videono data+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data1.3 GHz
Execution Unitsno data32
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core i9-9920X and Core i9-11900K integrated GPUs.

Number of displays supportedno data3

Graphics image quality

Maximum display resolutions supported by Core i9-9920X and Core i9-11900K integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2160@60Hz
Max resolution over eDPno data5120 x 3200 @60Hz
Max resolution over DisplayPortno data5120 x 3200 @60Hz

Graphics API support

APIs supported by Core i9-9920X and Core i9-11900K integrated GPUs, sometimes API versions are included.

DirectXno data12.1
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Core i9-9920X and Core i9-11900K.

PCIe version3.04.0
PCI Express lanes4420

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i9-9920X 16.40
i9-11900K 16.50
+0.6%

Core i9-11900K outperforms Core i9-9920X by 1% in our combined benchmark results.


Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 68%

i9-9920X 25190
i9-11900K 25336
+0.6%

Core i9-11900K outperforms Core i9-9920X by 1% in Passmark.

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Benchmark coverage: 42%

i9-9920X 1417
i9-11900K 2371
+67.3%

Core i9-11900K outperforms Core i9-9920X by 67% in GeekBench 5 Single-Core.

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Benchmark coverage: 42%

i9-9920X 9504
i9-11900K 10947
+15.2%

Core i9-11900K outperforms Core i9-9920X by 15% in GeekBench 5 Multi-Core.

Gaming performance

Advantages and disadvantages


Performance score 16.40 16.50
Recency 19 October 2018 16 March 2021
Physical cores 12 8
Threads 24 16
Power consumption (TDP) 165 Watt 125 Watt

We couldn't decide between Core i9-9920X and Core i9-11900K. The differences in performance seem too small.


Should you still have questions on choice between Core i9-9920X and Core i9-11900K, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i9-9920X
Core i9-9920X
Intel Core i9-11900K
Core i9-11900K

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Questions and comments

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