Intel Core i9-11900KB vs Intel Core i9-12900K

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i9-11900KB or Intel Core i9-11900KB – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The Intel Core i9-11900KB features 8 processor cores and has the capability to manage 16 threads concurrently.
It was released in Q2/2021 and belongs to the 11 generation of the Intel Core i9 series.
To use the Intel Core i9-11900KB, you'll need a motherboard with a BGA 1787 socket.
The Intel Core i9-12900K features 16 processor cores and has the capability to manage 24 threads concurrently.
It was released in Q4/2021 and belongs to the 12 generation of the Intel Core i9 series.
To use the Intel Core i9-12900K, you'll need a motherboard with a LGA 1700 socket.
Mobile Segment Desktop / Server
Intel Core i9-11900KB Name Intel Core i9-12900K
Intel Core i9 Family Intel Core i9
11 Generation 12
Intel Core i 11000H Group Intel Core i 12000
 
 

CPU Cores and Base Frequency

The Intel Core i9-11900KB has 8 CPU cores and can calculate 16 threads in parallel.
The clock frequency of the Intel Core i9-11900KB is 3.3 GHz
and turbo frequency for one core is 5.3 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The Intel Core i9-12900K has 16 CPU cores and can calculate 24 threads in parallel.
The clock frequency of the A-Core is 3.2 GHz.
Processors with hybrid (big.LITTLE) architecture strike a balance between performance and power efficiency, making them ideal for mobile devices.
5.3 GHz Turbo Frequency (1 core) None
None None 5.2 GHz
None None 2.4 GHz
None None 3.2 GHz
None None 8x Gracemont
None None 8x Golden Cove
Yes Overclocking Yes
normal Core architecture hybrid (big.LITTLE)
3.3 GHz Frequency None
None None 3.9 GHz
16 Threads 24
4.9 GHz Turbo Frequency (all cores) None
Yes Hyperthreading Yes
8 CPU Cores 16
8x Cores None
 
 

Internal Graphics

The Intel Core i9-11900KB has integrated graphics, called iGPU for short.
Specifically, the Intel Core i9-11900KB uses the Intel UHD Graphics 11th Gen (32 EU), which has 256 texture shaders
and 32 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The Intel Core i9-12900K has integrated graphics, called iGPU for short.
Specifically, the Intel Core i9-12900K uses the Intel UHD Graphics 770, which has 256 texture shaders
0.35 GHz GPU frequency 0.3 GHz
Q2/2021 Release date Q4/2021
12 Direct X 12
Intel UHD Graphics 11th Gen (32 EU) GPU name Intel UHD Graphics 770
10 nm Technology 10 nm
-- Max. displays --
256 Shaders 256
64.0 GB Max. GPU Memory 64.0 GB
32 Execution units 32
11 Generation 11
1.45 GHz GPU (Turbo) 1.55 GHz
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
Decode / Encode AVC Decode / Encode
Decode VC-1 Decode
Decode / Encode VP9 Decode / Encode
Decode / Encode h265 / HEVC (10 bit) Decode / Encode
Decode / Encode h264 Decode / Encode
Decode / Encode VP8 Decode / Encode
Decode / Encode h265 / HEVC (8 bit) Decode / Encode
Decode / Encode JPEG Decode / Encode
Decode AV1 Decode
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 128.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 51.2 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
The processor supports a maximum memory capacity of 128.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 76.8 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
2 Memory channels 2
128.0 GB Max. Memory 128.0 GB
pci PCIe pci
Yes AES-NI Yes
No ECC Yes
51.2 GB/s Bandwidth 76.8 GB/s
DDR4-3200 Memory type DDR4-3200, DDR5-4800
 
 

Thermal Management

The processor has a thermal design power (TDP) of 65 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 125 W watts.
100 °C Tjunction max 100 °C
None TDP (PL2) 241 W
65 W TDP (PL1 / PBP) 125 W
55 W TDP down None
 
 

Technical details

The Intel Core i9-11900KB is manufactured using a 10 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 20.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i9-12900K is manufactured using a 10 nm process.
In total, this processor boasts a generous 30.0 MB cache.
Q2/2021 Release date Q4/2021
-- Part Number BX8071512900K
4.0 MB L2-Cache 14.0 MB
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions SSE4.1, SSE4.2, AVX2, AVX2+
Monolithic Chip design Monolithic
Tiger Lake H Architecture Alder Lake S
10 nm Technology 10 nm
BGA 1787 Socket LGA 1700
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
583 $ Release price 589 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
20.0 MB L3-Cache 30.0 MB
 
 

Benchmarks

Estimated results for PassMark CPU Mark

Intel Core i9-12900K
16C 24T @ 3.2 GHz
40902
40902
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
23151
23151

Cinebench R23 (Multi-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
27472
27472
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
12264
12264

Geekbench 6 (Multi-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
16244
16244
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
10645
10645

Cinebench R20 (Multi-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
10511
10511
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
4712
4712

Cinebench R15 (Multi-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
4111
4111
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
2144
2144

Geekbench 6 (Single-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
2560
2560
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
2231
2231

Cinebench R23 (Single-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
1997
1997
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
1663
1663

Geekbench 5, 64bit (Single-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
1990
1990
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
1878
1878

Cinebench R20 (Single-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
779
779
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
640
640

Cinebench R15 (Single-Core)

Intel Core i9-12900K
16C 24T @ 3.2 GHz
294
294
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
256
256