Intel Core i5-10400F vs Intel Core i7-6900K

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i5-10400F or Intel Core i5-10400F – 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 i5-10400F features 6 processor cores and has the capability to manage 12 threads concurrently.
It was released in Q2/2020 and belongs to the 10 generation of the Intel Core i5 series.
To use the Intel Core i5-10400F, you'll need a motherboard with a LGA 1200 socket.
The Intel Core i7-6900K features 8 processor cores and has the capability to manage 16 threads concurrently.
It was released in Q2/2016 and belongs to the 6 generation of the Intel Core i7 Extreme Edition series.
To use the Intel Core i7-6900K, you'll need a motherboard with a LGA 2011-3 socket.
Desktop / Server Segment Desktop / Server
Intel Core i5-10400F Name Intel Core i7-6900K
Intel Core i 10000 Group Intel Core i 6000
10 Generation 6
Intel Core i5 Family Intel Core i7 Extreme Edition
 
 

CPU Cores and Base Frequency

The Intel Core i5-10400F has 6 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the Intel Core i5-10400F is 2.9 GHz
and turbo frequency for one core is 4.3 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The Intel Core i7-6900K has 8 CPU cores and can calculate 16 threads in parallel.
The clock frequency of the Intel Core i7-6900K is 3.2 GHz
and turbo frequency for one core is 3.7 GHz.
No Overclocking Yes
4.3 GHz Turbo Frequency (1 core) 3.7 GHz
12 Threads 16
Yes Hyperthreading Yes
6x Cores 8x
2.9 GHz Frequency 3.2 GHz
6 CPU Cores 8
normal Core architecture normal
4.0 GHz Turbo Frequency (all cores) None
 
 

Internal Graphics

The Intel Core i5-10400F does not have integrated graphics.
The Intel Core i7-6900K does not have integrated graphics.
-- GPU frequency --
-- Execution units --
-- Release date --
-- GPU (Turbo) --
-- Max. displays --
-- Shaders --
0 bytes Max. GPU Memory 0 bytes
-- Generation --
-- Direct X --
-- Technology --
GPU name
 
 

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.
-- h265 / HEVC (8 bit) --
-- AV1 --
-- VP9 --
-- VC-1 --
-- VP8 --
-- h264 --
-- JPEG --
-- AVC --
-- h265 / HEVC (10 bit) --
 
 

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 45.8 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 4 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.
128.0 GB Max. Memory 128.0 GB
DDR4-2666 Memory type DDR4-2400
pci PCIe pci
Yes AES-NI Yes
45.8 GB/s Bandwidth 76.8 GB/s
No ECC No
2 Memory channels 4
 
 

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 140 W watts.
65 W TDP (PL1 / PBP) 140 W
100 °C Tjunction max --
 
 

Technical details

The Intel Core i5-10400F 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 12.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i7-6900K is manufactured using a 14 nm process.
In total, this processor boasts a generous 20.0 MB cache.
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux
0 bytes L2-Cache 0 bytes
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
12.0 MB L3-Cache 20.0 MB
Q2/2020 Release date Q2/2016
157 $ Release price --
Technical data sheet Documents Technical data sheet
-- Part Number --
LGA 1200 Socket LGA 2011-3
Comet Lake S Architecture Skylake S
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
14 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
 
 

Benchmarks

Estimated results for PassMark CPU Mark

Intel Core i7-6900K
8C 16T @ 3.2 GHz
14474
14474
Intel Core i5-10400F
6C 12T @ 2.9 GHz
12399
12399

Cinebench R23 (Multi-Core)

Intel Core i7-6900K
8C 16T @ 3.2 GHz
11326
11326
Intel Core i5-10400F
6C 12T @ 2.9 GHz
8191
8191

Geekbench 5, 64bit (Multi-Core)

Intel Core i7-6900K
8C 16T @ 3.2 GHz
7651
7651
Intel Core i5-10400F
6C 12T @ 2.9 GHz
6014
6014

Geekbench 6 (Multi-Core)

Intel Core i7-6900K
8C 16T @ 3.2 GHz
7471
7471
Intel Core i5-10400F
6C 12T @ 2.9 GHz
6322
6322

CPU-Z Benchmark 17 (Multi-Core)

Intel Core i7-6900K
8C 16T @ 3.2 GHz
4402
4402
Intel Core i5-10400F
6C 12T @ 2.9 GHz
3548
3548

Geekbench 6 (Single-Core)

Intel Core i5-10400F
6C 12T @ 2.9 GHz
1433
1433
Intel Core i7-6900K
8C 16T @ 3.2 GHz
1254
1254

Cinebench R23 (Single-Core)

Intel Core i7-6900K
8C 16T @ 3.2 GHz
1151
1151
Intel Core i5-10400F
6C 12T @ 2.9 GHz
1120
1120

Geekbench 5, 64bit (Single-Core)

Intel Core i5-10400F
6C 12T @ 2.9 GHz
1120
1120
Intel Core i7-6900K
8C 16T @ 3.2 GHz
1086
1086