Intel Core i9-11900KF vs Intel Core i9-11900KB

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i9-11900KF or Intel Core i9-11900KF – 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 i9-11900KF features 8 processor cores and has the capability to manage 16 threads concurrently.
It was released in Q1/2021 and belongs to the 11 generation of the Intel Core i9 series.
To use the Intel Core i9-11900KF, you'll need a motherboard with a LGA 1200 socket.
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.
Desktop / Server Segment Mobile
Intel Core i9-11900KF Name Intel Core i9-11900KB
Intel Core i9 Family Intel Core i9
11 Generation 11
Intel Core i 11000 Group Intel Core i 11000H
 
 

CPU Cores and Base Frequency

The Intel Core i9-11900KF has 8 CPU cores and can calculate 16 threads in parallel.
The clock frequency of the Intel Core i9-11900KF is 3.5 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 i9-11900KB has 8 CPU cores and can calculate 16 threads in parallel.
The clock frequency of the Intel Core i9-11900KB is 3.3 GHz
5.3 GHz Turbo Frequency (1 core) 5.3 GHz
Yes Overclocking Yes
normal Core architecture normal
3.5 GHz Frequency 3.3 GHz
16 Threads 16
4.8 GHz Turbo Frequency (all cores) 4.9 GHz
Yes Hyperthreading Yes
8 CPU Cores 8
8x Cores 8x
 
 

Internal Graphics

The Intel Core i9-11900KF does not have integrated 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.
-- GPU frequency 0.35 GHz
-- Release date Q2/2021
-- Direct X 12
GPU name Intel UHD Graphics 11th Gen (32 EU)
-- Technology 10 nm
-- Max. displays --
-- Shaders 256
0 bytes Max. GPU Memory 64.0 GB
-- Execution units 32
-- Generation 11
-- GPU (Turbo) 1.45 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.
-- AVC Decode / Encode
-- VC-1 Decode
-- VP9 Decode / Encode
-- h265 / HEVC (10 bit) Decode / Encode
-- h264 Decode / Encode
-- VP8 Decode / Encode
-- h265 / HEVC (8 bit) Decode / Encode
-- JPEG Decode / Encode
-- 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.
2 Memory channels 2
128.0 GB Max. Memory 128.0 GB
pci PCIe pci
Yes AES-NI Yes
No ECC No
51.2 GB/s Bandwidth 51.2 GB/s
DDR4-3200 Memory type DDR4-3200
 
 

Thermal Management

The processor has a thermal design power (TDP) of 125 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 65 W watts.
100 °C Tjunction max 100 °C
125 W TDP (PL1 / PBP) 65 W
95 W TDP down 55 W
 
 

Technical details

The Intel Core i9-11900KF is manufactured using a 14 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 16.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i9-11900KB is manufactured using a 10 nm process.
In total, this processor boasts a generous 20.0 MB cache.
Q1/2021 Release date Q2/2021
-- Part Number --
4.0 MB L2-Cache 4.0 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, AVX-512
Monolithic Chip design Monolithic
Rocket Lake S Architecture Tiger Lake H
14 nm Technology 10 nm
LGA 1200 Socket BGA 1787
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
513 $ Release price 583 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
16.0 MB L3-Cache 20.0 MB
 
 

Benchmarks

Cinebench R23 (Multi-Core)

Intel Core i9-11900KF
8C 16T @ 3.5 GHz
16211
16211
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
12264
12264

Geekbench 6 (Multi-Core)

Intel Core i9-11900KF
8C 16T @ 3.5 GHz
11167
11167
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
10645
10645

Cinebench R20 (Multi-Core)

Intel Core i9-11900KF
8C 16T @ 3.5 GHz
6187
6187
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
4712
4712

Cinebench R15 (Multi-Core)

Intel Core i9-11900KF
8C 16T @ 3.5 GHz
2515
2515
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
2144
2144

Geekbench 6 (Single-Core)

Intel Core i9-11900KF
8C 16T @ 3.5 GHz
2349
2349
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
2231
2231

Geekbench 5, 64bit (Single-Core)

Intel Core i9-11900KF
8C 16T @ 3.5 GHz
1878
1878
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
1878
1878

Cinebench R23 (Single-Core)

Intel Core i9-11900KF
8C 16T @ 3.5 GHz
1686
1686
Intel Core i9-11900KB
8C 16T @ 3.3 GHz
1663
1663