Intel Core i5 6400 vs Intel Core i7 7820X
CPU · Specs Compare
General Parameters
Release Date
Sep 2015
May 2017
Manufacturer
Intel
Intel
Type
Desktop
Desktop
Instruction Set
x86-64
x86-64
Core Architecture
Skylake
Skylake
Processor Number
i5-6400
i7-7820X
Integrated Graphics
HD Graphics 530
N/A
Package
Manufacturing Process
14 nm
14 nm
Socket
LGA-1151
LGA-2066
Power Consumption
65 W
140 W
Peak Operating Temperature
—
99 °C
CPU Performance
Performance Cores
4
8
Performance Core Threads
4
16
Performance Core Base Frequency
2.7 GHz
3.6 GHz
Performance Core Turbo Frequency
3.3 GHz
4.3 GHz
Total Core Count
4
8
Total Thread Count
4
16
Bus Frequency
100 MHz
100 MHz
Multiplier
27x
36x
L1 Cache
64 K per core
64 K per core
L2 Cache
256 K per core
1 MB per core
L3 Cache
6 MB shared
11 MB shared
Unlocked Multiplier
No
Yes
Memory Parameters
Memory Types
DDR4-2133, DDR3L-1600
DDR4-2666
Max Memory Size
64 GB
128 GB
Max Memory Channels
2
4
Max Memory Bandwidth
34.1 GB/s
79.47 GB/s
ECC Memory Support
No
No
Graphics Card Parameters
Integrated Graphics
true
—
GPU Max Dynamic Frequency
950 MHz
—
Miscellaneous
PCIe Version
3.0
3.0
PCIe Lanes
16
28
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2
SSE4.1, SSE4.2, AVX-2, AVX-512
Benchmark
Cinebench R23
898
1,338
Cinebench R23
3,214
13,358
Geekbench 6
1,143
1,252
Geekbench 5
853
1,120
Geekbench 6
3,312
7,510
Geekbench 5
2,805
8,504
Blender
49
—
Passmark CPU
1,961
2,536
Passmark CPU
5,151
17,189
▲ Specs Compare
Data sourced from official specifications and benchmark tests.