Intel Core i7-8700K vs Intel Core i7-5820K

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i7-8700K or Intel Core i7-8700K – 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 i7-8700K features 6 processor cores and has the capability to manage 12 threads concurrently.
It was released in Q4/2017 and belongs to the 8 generation of the Intel Core i7 series.
To use the Intel Core i7-8700K, you'll need a motherboard with a LGA 1151-2 socket.
The Intel Core i7-5820K features 6 processor cores and has the capability to manage 12 threads concurrently.
It was released in Q3/2014 and belongs to the 5 generation of the Intel Core i7 Extreme Edition series.
To use the Intel Core i7-5820K, you'll need a motherboard with a LGA 2011-3 socket.
Intel Core i 8000 Group Intel Core i 5000X
8 Generation 5
Desktop / Server Segment Desktop / Server
Intel Core i7-8700K Name Intel Core i7-5820K
Intel Core i7 Family Intel Core i7 Extreme Edition
 
 

CPU Cores and Base Frequency

The Intel Core i7-8700K has 6 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the Intel Core i7-8700K is 3.7 GHz
and turbo frequency for one core is 4.7 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The Intel Core i7-5820K has 6 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the Intel Core i7-5820K is 3.3 GHz
and turbo frequency for one core is 3.6 GHz.
12 Threads 12
6x Cores 6x
6 CPU Cores 6
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking Yes
4.7 GHz Turbo Frequency (1 core) 3.6 GHz
3.7 GHz Frequency 3.3 GHz
4.3 GHz Turbo Frequency (all cores) 3.4 GHz
 
 

Internal Graphics

The Intel Core i7-8700K has integrated graphics, called iGPU for short.
Specifically, the Intel Core i7-8700K 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 i7-5820K does not have integrated graphics.
192 Shaders --
Q4/2017 Release date --
14 nm Technology --
12 Direct X --
64.0 GB Max. GPU Memory 0 bytes
-- Max. displays --
24 Execution units --
0.35 GHz GPU frequency --
9.5 Generation --
1.2 GHz GPU (Turbo) --
Intel UHD Graphics 630 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.
Decode / Encode VP8 --
Decode VC-1 --
Decode / Encode JPEG --
No AV1 --
Decode / Encode h265 / HEVC (8 bit) --
Decode / Encode AVC --
Decode / Encode h264 --
Decode / Encode VP9 --
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 42.7 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 64.0 GB distributed across 4 memory channels. It offers a peak memory bandwidth of 68.2 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
pci PCIe pci
Yes AES-NI Yes
DDR4-2666 Memory type DDR4-2133
No ECC No
128.0 GB Max. Memory 64.0 GB
2 Memory channels 4
42.7 GB/s Bandwidth 68.2 GB/s
 
 

Thermal Management

The processor has a thermal design power (TDP) of 95 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.
95 W TDP (PL1 / PBP) 140 W
-- Tjunction max --
 
 

Technical details

The Intel Core i7-8700K 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 i7-5820K is manufactured using a 22 nm process.
In total, this processor boasts a generous 15.0 MB cache.
Q4/2017 Release date Q3/2014
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
14 nm Technology 22 nm
Monolithic Chip design Monolithic
370 $ Release price 499 $
Coffee Lake S Architecture Haswell E
12.0 MB L3-Cache 15.0 MB
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- Part Number --
LGA 1151-2 Socket LGA 2011-3
0 bytes L2-Cache 0 bytes
 
 

Benchmarks

Geekbench 3, 64bit (Multi-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
27445
27445
Intel Core i7-5820K
6C 12T @ 3.3 GHz
23052
23052

Estimated results for PassMark CPU Mark

Intel Core i7-8700K
6C 12T @ 3.7 GHz
13770
13770
Intel Core i7-5820K
6C 12T @ 3.3 GHz
9854
9854

Cinebench R23 (Multi-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
8960
8960
Intel Core i7-5820K
6C 12T @ 3.3 GHz
5700
5700

Geekbench 6 (Multi-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
6750
6750
Intel Core i7-5820K
6C 12T @ 3.3 GHz
5763
5763

Geekbench 5, 64bit (Multi-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
6693
6693
Intel Core i7-5820K
6C 12T @ 3.3 GHz
5537
5537

V-Ray CPU-Render Benchmark

Intel Core i7-8700K
6C 12T @ 3.7 GHz
6635
6635
Intel Core i7-5820K
6C 12T @ 3.3 GHz
4584
4584

Geekbench 3, 64bit (Single-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
5330
5330
Intel Core i7-5820K
6C 12T @ 3.3 GHz
3740
3740

CPU-Z Benchmark 17 (Multi-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
3709
3709
Intel Core i7-5820K
6C 12T @ 3.3 GHz
2849
2849

Cinebench R20 (Multi-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
3689
3689
Intel Core i7-5820K
6C 12T @ 3.3 GHz
2301
2301

Geekbench 6 (Single-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
1486
1486
Intel Core i7-5820K
6C 12T @ 3.3 GHz
1086
1086

Cinebench R15 (Multi-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
1447
1447
Intel Core i7-5820K
6C 12T @ 3.3 GHz
1085
1085

Geekbench 5, 64bit (Single-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
1242
1242
Intel Core i7-5820K
6C 12T @ 3.3 GHz
923
923

Cinebench R23 (Single-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
1209
1209
Intel Core i7-5820K
6C 12T @ 3.3 GHz
795
795

Cinebench R20 (Single-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
487
487
Intel Core i7-5820K
6C 12T @ 3.3 GHz
329
329

Blender 2.81 (bmw27)

Intel Core i7-5820K
6C 12T @ 3.3 GHz
331.7
331.7
Intel Core i7-8700K
6C 12T @ 3.7 GHz
232.4
232.4

Cinebench R15 (Single-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
208
208
Intel Core i7-5820K
6C 12T @ 3.3 GHz
139
139

Blender 3.1 Benchmark

Intel Core i7-8700K
6C 12T @ 3.7 GHz
126
126
Intel Core i7-5820K
6C 12T @ 3.3 GHz
88
88

Cinebench R11.5, 64bit (Multi-Core)

Intel Core i7-8700K
6C 12T @ 3.7 GHz
16.0
16.0
Intel Core i7-5820K
6C 12T @ 3.3 GHz
11.1
11.1