Intel Core i7 7820X vs Intel Core i5 8400
We compared two desktop CPUs: Intel Core i7 7820X with 8 cores 3.6GHz and Intel Core i5 8400 with 6 cores 2.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i7 7820X 's Advantages
Larger memory bandwidth (79.47GB/s vs 41.6GB/s)
Higher base frequency (3.6GHz vs 2.8GHz)
Larger L3 cache size (11MB vs 9MB)
Intel Core i5 8400 's Advantages
Integrated graphics card
Lower TDP (65W vs 140W)
Score
Benchmark
Cinebench R23 Single Core
Intel Core i7 7820X
+30%
1338
Intel Core i5 8400
1026
Cinebench R23 Multi Core
Intel Core i7 7820X
+130%
13358
Intel Core i5 8400
5798
Geekbench 6 Single Core
Intel Core i7 7820X
1252
Intel Core i5 8400
+3%
1298
Geekbench 6 Multi Core
Intel Core i7 7820X
+60%
7510
Intel Core i5 8400
4677
Geekbench 5 Single Core
Intel Core i7 7820X
+8%
1120
Intel Core i5 8400
1032
Geekbench 5 Multi Core
Intel Core i7 7820X
+84%
8504
Intel Core i5 8400
4611
Passmark CPU Single Core
Intel Core i7 7820X
+6%
2536
Intel Core i5 8400
2387
Passmark CPU Multi Core
Intel Core i7 7820X
+86%
17189
Intel Core i5 8400
9214
General Parameters
May 2017
Release Date
Oct 2017
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Skylake
Core Architecture
Coffee Lake
i7-7820X
Processor Number
i5-8400
LGA-2066
Socket
LGA-1151
N/A
Integrated Graphics
UHD Graphics 630
Package
14 nm
Manufacturing Process
14 nm
140 W
Power Consumption
65 W
99 °C
Peak Operating Temperature
100 °C
CPU Performance
8
Performance Cores
6
16
Performance Core Threads
6
3.6 GHz
Performance Core Base Frequency
2.8 GHz
4.3 GHz
Performance Core Turbo Frequency
4 GHz
8
Total Core Count
6
16
Total Thread Count
6
100 MHz
Bus Frequency
100 MHz
36x
Multiplier
28x
64 K per core
L1 Cache
64 K per core
1 MB per core
L2 Cache
256 K per core
11 MB shared
L3 Cache
9 MB shared
Yes
Unlocked Multiplier
No
Memory Parameters
DDR4-2666
Memory Types
DDR4-2666
128 GB
Max Memory Size
128 GB
4
Max Memory Channels
2
79.47 GB/s
Max Memory Bandwidth
41.6 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
-
Integrated Graphics
true
-
GPU Base Frequency
350 MHz
-
GPU Max Dynamic Frequency
1050 MHz
-
Shader Units
192
-
Texture Units
24
-
Raster Operation Units
3
-
Execution Units
24
-
Power Consumption
15 W
-
Max Resolution
4096x2304 - 60 Hz
-
Graphics Performance
0.38 TFLOPS
Miscellaneous
3.0
PCIe Version
3.0
28
PCIe Lanes
16
SSE4.1, SSE4.2, AVX-2, AVX-512
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2
