Ryzen 9 8945HS vs i9-11900K

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Aggregate performance score

Core i9-11900K
2021
8 cores / 16 threads, 125 Watt
15.86
Ryzen 9 8945HS
2023
8 cores / 16 threads, 45 Watt
18.72
+18%

Ryzen 9 8945HS outperforms Core i9-11900K by a moderate 18% based on our aggregate benchmark results.

Primary details

Comparing Core i9-11900K and Ryzen 9 8945HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking428321
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation18.94no data
Market segmentDesktop processorLaptop
Power efficiency12.0139.37
Architecture codenameRocket Lake (2021)Hawk Point-HS (Zen 4) (2023−2024)
Release date16 March 2021 (3 years ago)6 December 2023 (1 year ago)
Launch price (MSRP)$539no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i9-11900K and Ryzen 9 8945HS 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 speed3.5 GHz4 GHz
Boost clock speed5.2 GHz5.2 GHz
Bus rate8 GT/sno data
L1 cache80 KB (per core)64 KB (per core)
L2 cache512 KB (per core)1 MB (per core)
L3 cache16 MB (shared)16 MB (shared)
Chip lithography14 nm4 nm
Die size276 mm2178 mm2
Maximum core temperature100 °C100 °C
Maximum case temperature (TCase)72 °Cno data
Number of transistorsno data25,000 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier+-

Compatibility

Information on Core i9-11900K and Ryzen 9 8945HS 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
SocketFCLGA1200FP8
Power consumption (TDP)125 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900K and Ryzen 9 8945HS. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512Ryzen AI, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI++
FMA-+
AVX++
vPro+no data
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
TSX+-
Idle States+no data
Thermal Monitoring+-
SIPP+-
Turbo Boost Max 3.0+no data
Precision Boost 2no data+
Deep Learning Boost+-

Security technologies

Core i9-11900K and Ryzen 9 8945HS technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB+no data
Secure Key+no data
Identity Protection+-
SGX-no data
OS Guard+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900K and Ryzen 9 8945HS are enumerated here.

AMD-V-+
VT-d+no data
VT-x+no data
EPT+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-11900K and Ryzen 9 8945HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR5
Maximum memory size128 GBno data
Max memory channels2no data
Maximum memory bandwidth50 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
Intel UHD Graphics 750AMD Radeon 780M ( - 2800 MHz)
Max video memory64 GBno data
Quick Sync Video+-
Clear Video+no data
Clear Video HD+no data
Graphics max frequency1.3 GHzno data
Execution Units32no data
InTru 3D+no data

Graphics interfaces

Available interfaces and connections of Core i9-11900K and Ryzen 9 8945HS integrated GPUs.

Number of displays supported3no data

Graphics image quality

Maximum display resolutions supported by Core i9-11900K and Ryzen 9 8945HS integrated GPUs, including resolutions over different interfaces.

4K resolution support+no data
Max resolution over HDMI 1.44096x2160@60Hzno data
Max resolution over eDP5120 x 3200 @60Hzno data
Max resolution over DisplayPort5120 x 3200 @60Hzno data

Graphics API support

APIs supported by Core i9-11900K and Ryzen 9 8945HS integrated GPUs, sometimes API versions are included.

DirectX12.1no data
OpenGL4.5no data

Peripherals

Specifications and connection of peripherals supported by Core i9-11900K and Ryzen 9 8945HS.

PCIe version4.04.0
PCI Express lanes2020

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.

i9-11900K 15.86
Ryzen 9 8945HS 18.72
+18%

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.

i9-11900K 25196
Ryzen 9 8945HS 29736
+18%

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.

i9-11900K 2392
+0.8%
Ryzen 9 8945HS 2372

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.

i9-11900K 10982
Ryzen 9 8945HS 11607
+5.7%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

i9-11900K 10545
+35.4%
Ryzen 9 8945HS 7786

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

i9-11900K 62024
+25.8%
Ryzen 9 8945HS 49299

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

i9-11900K 3.98
+10.1%
Ryzen 9 8945HS 4.38

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

i9-11900K 27
Ryzen 9 8945HS 31
+16.1%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

i9-11900K 2379
Ryzen 9 8945HS 2659
+11.8%

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

i9-11900K 255
Ryzen 9 8945HS 281
+10.2%

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

i9-11900K 3.1
Ryzen 9 8945HS 3.42
+10.3%

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

i9-11900K 13
Ryzen 9 8945HS 15.4
+18.1%

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

i9-11900K 9030
Ryzen 9 8945HS 14109
+56.2%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

i9-11900K 137
Ryzen 9 8945HS 151
+10%

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

i9-11900K 310
+3.9%
Ryzen 9 8945HS 298

Geekbench 5.5 Multi-Core

i9-11900K 10483
Ryzen 9 8945HS 12368
+18%

Blender(-)

i9-11900K 212
+10.3%
Ryzen 9 8945HS 192

Geekbench 5.5 Single-Core

i9-11900K 1788
Ryzen 9 8945HS 1965
+9.9%

7-Zip Single

i9-11900K 6347
+1.6%
Ryzen 9 8945HS 6250

7-Zip

i9-11900K 59659
Ryzen 9 8945HS 71704
+20.2%

WebXPRT 3

i9-11900K 284
Ryzen 9 8945HS 316
+11.5%

WebXPRT 4 Overall

i9-11900K 247
Ryzen 9 8945HS 260
+5.3%

Blender v3.3 Classroom CPU(-)

i9-11900K 428
+37.2%
Ryzen 9 8945HS 312

Gaming performance

Pros & cons summary


Performance score 15.86 18.72
Integrated graphics card 4.50 18.32
Recency 16 March 2021 6 December 2023
Chip lithography 14 nm 4 nm
Power consumption (TDP) 125 Watt 45 Watt

Ryzen 9 8945HS has a 18% higher aggregate performance score, 307.1% faster integrated GPU, an age advantage of 2 years, a 250% more advanced lithography process, and 177.8% lower power consumption.

The Ryzen 9 8945HS is our recommended choice as it beats the Core i9-11900K in performance tests.

Note that Core i9-11900K is a desktop processor while Ryzen 9 8945HS is a notebook one.


Should you still have questions on choice between Core i9-11900K and Ryzen 9 8945HS, ask them in Comments section, and we shall answer.

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Intel Core i9-11900K
Core i9-11900K
AMD Ryzen 9 8945HS
Ryzen 9 8945HS

Similar processor comparisons

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Community ratings

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Questions & comments

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