Intel Core i5-10400 vs Intel Core i7-6800K

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i5-10400 or Intel Core i5-10400 – 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 i5-10400 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 i5-10400, you'll need a motherboard with a LGA 1200 socket.
The Intel Core i7-6800K features 6 processor cores and has the capability to manage 12 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 i7-6800K, you'll need a motherboard with a LGA 2011-3 socket.
Intel Core i5 Family Intel Core i7 Extreme Edition
Desktop / Server Segment Desktop / Server
Intel Core i5-10400 Name Intel Core i7-6800K
Intel Core i 10000 Group Intel Core i 6000
10 Generation 6
 
 

CPU Cores and Base Frequency

The Intel Core i5-10400 has 6 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the Intel Core i5-10400 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 i7-6800K has 6 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the Intel Core i7-6800K is 3.4 GHz
and turbo frequency for one core is 3.6 GHz.
6x Cores 6x
4.0 GHz Turbo Frequency (all cores) None
2.9 GHz Frequency 3.4 GHz
6 CPU Cores 6
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking Yes
12 Threads 12
4.3 GHz Turbo Frequency (1 core) 3.6 GHz
 
 

Internal Graphics

The Intel Core i5-10400 has integrated graphics, called iGPU for short.
Specifically, the Intel Core i5-10400 uses the Intel UHD Graphics 630, which has 192 texture shaders
and 24 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The Intel Core i7-6800K does not have integrated graphics.
1.2 GHz GPU (Turbo) --
Q4/2017 Release date --
24 Execution units --
12 Direct X --
-- Max. displays --
192 Shaders --
Intel UHD Graphics 630 GPU name
0.35 GHz GPU frequency --
64.0 GB Max. GPU Memory 0 bytes
9.5 Generation --
14 nm Technology --
 
 

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 VP8 --
Decode / Encode VP9 --
Decode / Encode AVC --
Decode / Encode h264 --
Decode / Encode JPEG --
Decode VC-1 --
No AV1 --
Decode / Encode h265 / HEVC (8 bit) --
Decode / Encode 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.
Yes AES-NI Yes
128.0 GB Max. Memory 128.0 GB
45.8 GB/s Bandwidth 76.8 GB/s
DDR4-2666 Memory type DDR4-2400
pci PCIe pci
2 Memory channels 4
No ECC No
 
 

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 100 °C
 
 

Technical details

The Intel Core i5-10400 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 i7-6800K is manufactured using a 14 nm process.
In total, this processor boasts a generous 15.0 MB cache.
Technical data sheet Documents Technical data sheet
Q2/2020 Release date Q2/2016
LGA 1200 Socket LGA 2011-3
0 bytes L2-Cache 0 bytes
12.0 MB L3-Cache 15.0 MB
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- Part Number --
Comet Lake S Architecture Skylake S
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
182 $ Release price 628 $
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
Monolithic Chip design Monolithic
14 nm Technology 14 nm
 
 

Benchmarks

Estimated results for PassMark CPU Mark

Intel Core i5-10400
6C 12T @ 2.9 GHz
12267
12267
Intel Core i7-6800K
6C 12T @ 3.4 GHz
10752
10752

Cinebench R23 (Multi-Core)

Intel Core i5-10400
6C 12T @ 2.9 GHz
8164
8164
Intel Core i7-6800K
6C 12T @ 3.4 GHz
6645
6645

Geekbench 5, 64bit (Multi-Core)

Intel Core i7-6800K
6C 12T @ 3.4 GHz
6314
6314
Intel Core i5-10400
6C 12T @ 2.9 GHz
5870
5870

Geekbench 6 (Multi-Core)

Intel Core i5-10400
6C 12T @ 2.9 GHz
6261
6261
Intel Core i7-6800K
6C 12T @ 3.4 GHz
5960
5960

V-Ray CPU-Render Benchmark

Intel Core i5-10400
6C 12T @ 2.9 GHz
6120
6120
Intel Core i7-6800K
6C 12T @ 3.4 GHz
4855
4855

CPU-Z Benchmark 17 (Multi-Core)

Intel Core i5-10400
6C 12T @ 2.9 GHz
3551
3551
Intel Core i7-6800K
6C 12T @ 3.4 GHz
3194
3194

Geekbench 6 (Single-Core)

Intel Core i5-10400
6C 12T @ 2.9 GHz
1433
1433
Intel Core i7-6800K
6C 12T @ 3.4 GHz
1267
1267

Cinebench R23 (Single-Core)

Intel Core i5-10400
6C 12T @ 2.9 GHz
1120
1120
Intel Core i7-6800K
6C 12T @ 3.4 GHz
949
949

Geekbench 5, 64bit (Single-Core)

Intel Core i5-10400
6C 12T @ 2.9 GHz
1120
1120
Intel Core i7-6800K
6C 12T @ 3.4 GHz
1080
1080