Ryzen 9 7845HX vs i9-11900K

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Aggregate performance score

Core i9-11900K
2021
8 cores / 16 threads, 125 Watt
15.86
Ryzen 9 7845HX
2023
12 cores / 24 threads, 55 Watt
28.71
+81%

Ryzen 9 7845HX outperforms Core i9-11900K by an impressive 81% based on our aggregate benchmark results.

Primary details

Comparing Core i9-11900K and Ryzen 9 7845HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking428159
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation18.92no data
Market segmentDesktop processorLaptop
Power efficiency12.0149.40
Architecture codenameRocket Lake (2021)Dragon Range-HX (Zen 4) (2023−2024)
Release date16 March 2021 (3 years ago)4 January 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 7845HX 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)12 (Dodeca-Core)
Threads1624
Base clock speed3.5 GHz3 GHz
Boost clock speed5.2 GHz5.2 GHz
Bus rate8 GT/sno data
L1 cache80 KB (per core)64K (per core)
L2 cache512 KB (per core)1 MB (per core)
L3 cache16 MB (shared)64 MB (shared)
Chip lithography14 nmCCD = 5 nm, I/O = 6 nm
Die size276 mm22x 71 mm2
Maximum core temperature100 °C100 °C
Maximum case temperature (TCase)72 °Cno data
Number of transistorsno data13,140 million
64 bit support++
Windows 11 compatibility++
Unlocked multiplier++

Compatibility

Information on Core i9-11900K and Ryzen 9 7845HX 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
SocketFCLGA1200FL1
Power consumption (TDP)125 Watt55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900K and Ryzen 9 7845HX. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512MMX, 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 7845HX 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 7845HX 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 7845HX. 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 610M (400 - 2200 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 7845HX integrated GPUs.

Number of displays supported3no data

Graphics image quality

Maximum display resolutions supported by Core i9-11900K and Ryzen 9 7845HX 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 7845HX 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 7845HX.

PCIe version4.05.0
PCI Express lanes2028

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 7845HX 28.71
+81%

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 25192
Ryzen 9 7845HX 45597
+81%

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 2391
Ryzen 9 7845HX 2651
+10.9%

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 10978
Ryzen 9 7845HX 13990
+27.4%

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 7845HX 4320
+81.6%

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 7845HX 295
+15.7%

Geekbench 5.5 Multi-Core

i9-11900K 10483
Ryzen 9 7845HX 15068
+43.7%

Blender(-)

i9-11900K 212
+81.1%
Ryzen 9 7845HX 117

Geekbench 5.5 Single-Core

i9-11900K 1788
Ryzen 9 7845HX 2008
+12.3%

7-Zip Single

i9-11900K 6347
Ryzen 9 7845HX 7018
+10.6%

7-Zip

i9-11900K 59659
Ryzen 9 7845HX 106033
+77.7%

WebXPRT 3

i9-11900K 284
Ryzen 9 7845HX 357
+25.9%

WebXPRT 4 Overall

i9-11900K 247
Ryzen 9 7845HX 282
+14.2%

Blender v3.3 Classroom CPU(-)

i9-11900K 428
+131%
Ryzen 9 7845HX 185

Gaming performance

Pros & cons summary


Performance score 15.86 28.71
Integrated graphics card 4.50 2.85
Recency 16 March 2021 4 January 2023
Physical cores 8 12
Threads 16 24
Power consumption (TDP) 125 Watt 55 Watt

i9-11900K has 57.9% faster integrated GPU.

Ryzen 9 7845HX, on the other hand, has a 81% higher aggregate performance score, an age advantage of 1 year, 50% more physical cores and 50% more threads, and 127.3% lower power consumption.

The Ryzen 9 7845HX 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 7845HX is a notebook one.


Should you still have questions on choice between Core i9-11900K and Ryzen 9 7845HX, ask them in Comments section, and we shall answer.

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Intel Core i9-11900K
Core i9-11900K
AMD Ryzen 9 7845HX
Ryzen 9 7845HX

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Community ratings

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