Intel Core i5 9400 vs Intel Core i7 7820X
We compared two desktop CPUs: Intel Core i5 9400 with 6 cores 2.9GHz and Intel Core i7 7820X with 8 cores 3.6GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i5 9400 Advantages
Released 1 years and 8 months late
Integrated graphics card
Lower TDP (65W vs 140W)
Intel Core i7 7820X Advantages
Larger memory bandwidth (79.47GB/s vs 41.6GB/s)
Higher base frequency (3.6GHz vs 2.9GHz)
Larger L3 cache size (11MB vs 9MB)
Score
Benchmark
Geekbench 6 Single Core
Intel Core i5 9400
1102
Intel Core i7 7820X
+13%
1252
Geekbench 6 Multi Core
Intel Core i5 9400
2309
Intel Core i7 7820X
+225%
7510
Geekbench 5 Single Core
Intel Core i5 9400
1048
Intel Core i7 7820X
+6%
1120
Geekbench 5 Multi Core
Intel Core i5 9400
4599
Intel Core i7 7820X
+84%
8504
Passmark CPU Single Core
Intel Core i5 9400
2457
Intel Core i7 7820X
+3%
2536
Passmark CPU Multi Core
Intel Core i5 9400
9431
Intel Core i7 7820X
+82%
17189
General Parameters
Jan 2019
Release Date
May 2017
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Coffee Lake
Core Architecture
Skylake
i5-9400
Processor Number
i7-7820X
LGA-1151
Socket
LGA-2066
UHD Graphics 630
Integrated Graphics
N/A
Package
14 nm
Manufacturing Process
14 nm
65 W
Power Consumption
140 W
100 °C
Peak Operating Temperature
99 °C
CPU Performance
6
Performance Cores
8
6
Performance Core Threads
16
2.9 GHz
Performance Core Base Frequency
3.6 GHz
4.1 GHz
Performance Core Turbo Frequency
4.3 GHz
6
Total Core Count
8
6
Total Thread Count
16
100 MHz
Bus Frequency
100 MHz
29x
Multiplier
36x
64 K per core
L1 Cache
64 K per core
256 K per core
L2 Cache
1 MB per core
9 MB shared
L3 Cache
11 MB shared
No
Unlocked Multiplier
Yes
Memory Parameters
DDR4-2666
Memory Types
DDR4-2666
128 GB
Max Memory Size
128 GB
2
Max Memory Channels
4
41.6 GB/s
Max Memory Bandwidth
79.47 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
true
Integrated Graphics
-
350 MHz
GPU Base Frequency
-
1050 MHz
GPU Max Dynamic Frequency
-
192
Shader Units
-
24
Texture Units
-
3
Raster Operation Units
-
24
Execution Units
-
15 W
Power Consumption
-
4096x2304 - 60 Hz
Max Resolution
-
0.38 TFLOPS
Graphics Performance
-
Miscellaneous
3.0
PCIe Version
3.0
16
PCIe Lanes
28
SSE4.1, SSE4.2, AVX-2
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
