Core i9-11900KF vs Ryzen 9 5900HX

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Aggregate performance score

Ryzen 9 5900HX
2021
8 cores / 16 threads, 45 Watt
14.60
Core i9-11900KF
2021
8 cores / 16 threads, 125 Watt
16.24
+11.2%

Core i9-11900KF outperforms Ryzen 9 5900HX by a moderate 11% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 5900HX and Core i9-11900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking460378
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data32.51
Market segmentLaptopDesktop processor
SeriesAMD Cezanne (Zen 3, Ryzen 5000)no data
Architecture codenameCezanne-H (Zen 3)Rocket Lake (2021)
Release date12 January 2021 (3 years ago)16 March 2021 (3 years ago)
Current priceno data$392

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 5900HX and Core i9-11900KF 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 cores8 (Octa-Core)8 (Octa-Core)
Threads1616
Base clock speed3.3 GHz3.5 GHz
Boost clock speed4.6 GHz5.2 GHz
L1 cache64K (per core)64K (per core)
L2 cache512K (per core)256K (per core)
L3 cache16 MB (shared)16 MB (shared)
Chip lithography7 nm14 nm
Die size156 mm2no data
Maximum core temperature105 °C100 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors9,800 millionno data
64 bit support++
Windows 11 compatibility++
Unlocked multiplierNoYes

Compatibility

Information on Ryzen 9 5900HX and Core i9-11900KF 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
SocketFP6FCLGA1200
Power consumption (TDP)45 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 5900HX and Core i9-11900KF. You'll probably need this information if you require some particular technology.

Instruction set extensionsDDR4-3200/LPDDR4-4266 RAM, PCIe 3, MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHAIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI++
AVX++
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSXno data+
Idle Statesno data+
Thermal Monitoringno data+
SIPPno data-
Turbo Boost Max 3.0no data+
Statusno dataDiscontinued

Security technologies

Ryzen 9 5900HX and Core i9-11900KF technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 5900HX and Core i9-11900KF are enumerated here.

AMD-V+no data
VT-dno data+
VT-xno data+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 5900HX and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4-3200
Maximum memory sizeno data128 GB
Max memory channelsno data2
Maximum memory bandwidthno data50 GB/s
ECC memory supportno data-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon RX Vega 8 (Ryzen 4000/5000)no data

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 5900HX and Core i9-11900KF.

PCIe version3.04.0
PCI Express lanesno data20

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.

Ryzen 9 5900HX 14.60
i9-11900KF 16.24
+11.2%

Core i9-11900KF outperforms Ryzen 9 5900HX by 11% based on our aggregate 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%

Ryzen 9 5900HX 22580
i9-11900KF 25115
+11.2%

Core i9-11900KF outperforms Ryzen 9 5900HX by 11% 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%

Ryzen 9 5900HX 1839
i9-11900KF 2315
+25.9%

Core i9-11900KF outperforms Ryzen 9 5900HX by 26% 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%

Ryzen 9 5900HX 7515
i9-11900KF 10012
+33.2%

Core i9-11900KF outperforms Ryzen 9 5900HX by 33% in GeekBench 5 Multi-Core.

Gaming performance

Pros & cons summary


Performance score 14.60 16.24
Recency 12 January 2021 16 March 2021
Chip lithography 7 nm 14 nm
Power consumption (TDP) 45 Watt 125 Watt

The Core i9-11900KF is our recommended choice as it beats the Ryzen 9 5900HX in performance tests.

Be aware that Ryzen 9 5900HX is a notebook processor while Core i9-11900KF is a desktop one.


Should you still have questions on choice between Ryzen 9 5900HX and Core i9-11900KF, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 5900HX
Ryzen 9 5900HX
Intel Core i9-11900KF
Core i9-11900KF

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Community ratings

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