Intel Core i7-7740X vs Intel Core i7-6700K

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i7-7740X or Intel Core i7-7740X – 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 i7-7740X features 4 processor cores and has the capability to manage 8 threads concurrently.
It was released in Q2/2017 and belongs to the 7 generation of the Intel Core i7 series.
To use the Intel Core i7-7740X, you'll need a motherboard with a LGA 2066 socket.
The Intel Core i7-6700K features 4 processor cores and has the capability to manage 8 threads concurrently.
It was released in Q3/2015 and belongs to the 6 generation of the Intel Core i7 series.
To use the Intel Core i7-6700K, you'll need a motherboard with a LGA 1151 socket.
Intel Core i 7000X Group Intel Core i 6000
7 Generation 6
Desktop / Server Segment Desktop / Server
Intel Core i7-7740X Name Intel Core i7-6700K
Intel Core i7 Family Intel Core i7
 
 

CPU Cores and Base Frequency

The Intel Core i7-7740X has 4 CPU cores and can calculate 8 threads in parallel.
The clock frequency of the Intel Core i7-7740X is 4.3 GHz
and turbo frequency for one core is 4.5 GHz.
The Intel Core i7-6700K has 4 CPU cores and can calculate 8 threads in parallel.
The clock frequency of the Intel Core i7-6700K is 4.0 GHz
and turbo frequency for one core is 4.2 GHz.
8 Threads 8
4x Cores 4x
4 CPU Cores 4
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking Yes
4.5 GHz Turbo Frequency (1 core) 4.2 GHz
4.3 GHz Frequency 4.0 GHz
4.3 GHz Turbo Frequency (all cores) 4.0 GHz
 
 

Internal Graphics

The Intel Core i7-7740X does not have integrated graphics.
The Intel Core i7-6700K has integrated graphics, called iGPU for short.
Specifically, the Intel Core i7-6700K uses the Intel HD Graphics 530, 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.
-- Shaders 192
-- Release date Q3/2015
-- Technology 14 nm
-- Direct X 12
0 bytes Max. GPU Memory 32.0 GB
-- Max. displays --
-- Execution units 24
-- GPU frequency 0.35 GHz
-- Generation 9
-- GPU (Turbo) 1.15 GHz
GPU name Intel HD Graphics 530
 
 

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.
-- VP8 Decode / Encode
-- VC-1 Decode
-- JPEG Decode / Encode
-- AV1 No
-- h265 / HEVC (8 bit) Decode / Encode
-- AVC Decode / Encode
-- h264 Decode / Encode
-- VP9 Decode
-- h265 / HEVC (10 bit) Decode
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 64.0 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 2 memory channels. It offers a peak memory bandwidth of 34.1 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, DDR3-1866
No ECC No
64.0 GB Max. Memory 64.0 GB
2 Memory channels 2
42.7 GB/s Bandwidth 34.1 GB/s
 
 

Thermal Management

The processor has a thermal design power (TDP) of 112 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 91 W watts.
112 W TDP (PL1 / PBP) 91 W
-- Tjunction max --
 
 

Technical details

The Intel Core i7-7740X 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 8.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i7-6700K is manufactured using a 14 nm process.
Q2/2017 Release date Q3/2015
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
14 nm Technology 14 nm
Monolithic Chip design Monolithic
375 $ Release price 420 $
Skylake X Architecture Skylake S
8.0 MB L3-Cache 8.0 MB
Windows 10, Linux 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 2066 Socket LGA 1151
0 bytes L2-Cache 0 bytes
 
 

Benchmarks

Geekbench 3, 64bit (Multi-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
18340
18340
Intel Core i7-6700K
4C 8T @ 4.0 GHz
17028
17028

Geekbench 6 (Multi-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
5220
5220
Intel Core i7-6700K
4C 8T @ 4.0 GHz
4665
4665

Geekbench 3, 64bit (Single-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
5133
5133
Intel Core i7-6700K
4C 8T @ 4.0 GHz
4757
4757

Geekbench 5, 64bit (Multi-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
4834
4834
Intel Core i7-6700K
4C 8T @ 4.0 GHz
4459
4459

CPU-Z Benchmark 17 (Multi-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
2540
2540
Intel Core i7-6700K
4C 8T @ 4.0 GHz
2313
2313

Geekbench 6 (Single-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
1497
1497
Intel Core i7-6700K
4C 8T @ 4.0 GHz
1347
1347

Geekbench 5, 64bit (Single-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
1277
1277
Intel Core i7-6700K
4C 8T @ 4.0 GHz
1151
1151

Cinebench R15 (Multi-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
976
976
Intel Core i7-6700K
4C 8T @ 4.0 GHz
888
888

Cinebench R15 (Single-Core)

Intel Core i7-7740X
4C 8T @ 4.3 GHz
200
200
Intel Core i7-6700K
4C 8T @ 4.0 GHz
180
180