Intel Core i7 7740X vs Intel Core i7 6700K
We compared two desktop CPUs: Intel Core i7 7740X with 4 cores 4.3GHz and Intel Core i7 6700K with 4 cores 4.0GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i7 7740X 's Advantages
Released 1 years and 9 months late
Higher specification of memory (2666 vs 2133)
Larger memory bandwidth (42.7GB/s vs 34.1GB/s)
Higher base frequency (4.3GHz vs 4.0GHz)
Intel Core i7 6700K 's Advantages
Integrated graphics card
Lower TDP (91W vs 112W)
Score
Benchmark
Geekbench 6 Single Core
Intel Core i7 7740X
+2%
1553
Intel Core i7 6700K
1512
Geekbench 6 Multi Core
Intel Core i7 7740X
+8%
5516
Intel Core i7 6700K
5068
Geekbench 5 Single Core
Intel Core i7 7740X
+18%
1291
Intel Core i7 6700K
1087
Geekbench 5 Multi Core
Intel Core i7 7740X
+17%
5001
Intel Core i7 6700K
4271
Passmark CPU Single Core
Intel Core i7 7740X
+10%
2759
Intel Core i7 6700K
2503
Passmark CPU Multi Core
Intel Core i7 7740X
+10%
9824
Intel Core i7 6700K
8928
General Parameters
May 2017
Release Date
Aug 2015
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Kaby Lake
Core Architecture
Skylake
i7-7740X
Processor Number
i7-6700K
LGA-2066
Socket
LGA-1151
N/A
Integrated Graphics
HD Graphics 530
Package
-
Transistor Count
1.75 billions
14 nm
Manufacturing Process
14 nm
112 W
Power Consumption
91 W
100 °C
Peak Operating Temperature
-
CPU Performance
4
Performance Cores
4
8
Performance Core Threads
8
4.3 GHz
Performance Core Base Frequency
4.0 GHz
4.5 GHz
Performance Core Turbo Frequency
4.2 GHz
4
Total Core Count
4
8
Total Thread Count
8
-
Bus Frequency
100 MHz
43x
Multiplier
40
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
256 K per core
8 MB shared
L3 Cache
8 MB shared
Yes
Unlocked Multiplier
Yes
Memory Parameters
DDR4-2666
Memory Types
DDR4-2133,DDR3L-1600
64 GB
Max Memory Size
64 GB
2
Max Memory Channels
2
42.7 GB/s
Max Memory Bandwidth
34.1 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
-
Integrated Graphics
true
-
GPU Max Dynamic Frequency
1150 MHz
Miscellaneous
3.0
PCIe Version
3.0
16
PCIe Lanes
16
SSE4.1, SSE4.2, AVX-2
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2
