i9-12900H vs i9-11900KB

Aggregate performance score

Core i9-11900KB
2021
8 cores / 16 threads, 65 Watt
14.70
Core i9-12900H
2022
14 cores / 20 threads, 45 Watt
17.93
+22%

Core i9-12900H outperforms Core i9-11900KB by a significant 22% based on our aggregate benchmark results.

Primary details

Comparing Core i9-11900KB and Core i9-12900H processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking496351
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation17.86no data
Market segmentDesktop processorLaptop
Seriesno dataIntel Alder Lake-P
Power efficiency21.0137.01
Architecture codenameTiger Lake-H (2021)Alder Lake-H (2022)
Release dateMay 2021 (3 years ago)4 January 2022 (2 years ago)
Launch price (MSRP)$539no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i9-11900KB and Core i9-12900H 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)14 (Tetradeca-Core)
Threads1620
Base clock speed3.3 GHz2.5 GHz
Boost clock speed4.9 GHz5 GHz
Bus rate8 GT/sno data
L1 cache80K (per core)80K (per core)
L2 cache1.25 MB (per core)1.25 MB (per core)
L3 cache24 MB (shared)24 MB (shared)
Chip lithography10 nm SuperFinIntel 7 nm
Die size190 mm2217 mm2
Maximum core temperature100 °C100 °C
Maximum case temperature (TCase)72 °Cno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier+-

Compatibility

Information on Core i9-11900KB and Core i9-12900H 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
SocketFCBGA1787FCBGA1744
Power consumption (TDP)65 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900KB and Core i9-12900H. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
FMA-+
AVX++
Enhanced SpeedStep (EIST)++
Speed Shift++
Hyper-Threading Technology++
TSX-+
Idle States+no data
Thermal Monitoring++
Flex Memory Access++
SIPP-+
Turbo Boost Max 3.0++
Deep Learning Boost++

Security technologies

Core i9-11900KB and Core i9-12900H technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Key++
Identity Protection+-
SGXYes with Intel® MEno data
OS Guard++

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900KB and Core i9-12900H are enumerated here.

VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-11900KB and Core i9-12900H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4, DDR5
Maximum memory size128 GB64 GB
Max memory channels22
Maximum memory bandwidth51.2 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel® UHD Graphics for 11th Gen Intel® ProcessorsIntel® Iris® Xe Graphics eligible
Quick Sync Video++
Graphics max frequency1.45 GHz1.45 GHz
Execution Units3296

Graphics interfaces

Available interfaces and connections of Core i9-11900KB and Core i9-12900H integrated GPUs.

Number of displays supported44

Graphics image quality

Maximum display resolutions supported by Core i9-11900KB and Core i9-12900H integrated GPUs, including resolutions over different interfaces.

4K resolution support+no data
Max resolution over HDMI 1.44096x2304@60Hz4096 x 2304 @ 60Hz
Max resolution over eDP4096 x 2304@60Hz4096 x 2304 @ 120Hz
Max resolution over DisplayPort7680x4320@60Hz7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core i9-11900KB and Core i9-12900H integrated GPUs, sometimes API versions are included.

DirectX1212.1
OpenGL4.64.6

Peripherals

Specifications and connection of peripherals supported by Core i9-11900KB and Core i9-12900H.

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.

i9-11900KB 14.70
i9-12900H 17.93
+22%

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.

i9-11900KB 22917
i9-12900H 27943
+21.9%

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.

i9-11900KB 9538
+15.8%
i9-12900H 8235

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.

i9-11900KB 50665
+6.1%
i9-12900H 47767

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

i9-11900KB 14961
+11.2%
i9-12900H 13453

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.

i9-11900KB 3.42
+17.8%
i9-12900H 4.03

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.

i9-11900KB 22
i9-12900H 25
+14.8%

Cinebench 15 64-bit multi-core

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

i9-11900KB 2027
i9-12900H 2577
+27.1%

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.

i9-11900KB 247
i9-12900H 266
+7.7%

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.

i9-11900KB 2.84
i9-12900H 2.99
+5.3%

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.

i9-11900KB 11.6
+12.6%
i9-12900H 10.3

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.  

i9-11900KB 106
i9-12900H 111
+5.1%

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.  

i9-11900KB 273
+3.5%
i9-12900H 263

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.

i9-11900KB 9584
+20.8%
i9-12900H 7937

Geekbench 5.5 Multi-Core

i9-11900KB 8924
i9-12900H 12237
+37.1%

Blender(-)

i9-11900KB 263
+27.8%
i9-12900H 206

Geekbench 5.5 Single-Core

i9-11900KB 1656
i9-12900H 1820
+9.9%

7-Zip Single

i9-11900KB 5979
+1.7%
i9-12900H 5881

7-Zip

i9-11900KB 50152
i9-12900H 64909
+29.4%

WebXPRT 3

i9-11900KB 269
i9-12900H 296
+10%

Gaming performance

Pros & cons summary


Performance score 14.70 17.93
Physical cores 8 14
Threads 16 20
Power consumption (TDP) 65 Watt 45 Watt

i9-12900H has a 22% higher aggregate performance score, 75% more physical cores and 25% more threads, and 44.4% lower power consumption.

The Core i9-12900H is our recommended choice as it beats the Core i9-11900KB in performance tests.

Note that Core i9-11900KB is a desktop processor while Core i9-12900H is a notebook one.


Should you still have questions on choice between Core i9-11900KB and Core i9-12900H, ask them in Comments section, and we shall answer.

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


Intel Core i9-11900KB
Core i9-11900KB
Intel Core i9-12900H
Core i9-12900H

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Community ratings

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Questions & comments

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