Intel Core i5 8400 vs Intel Core i9 7900X
We compared two desktop CPUs: Intel Core i5 8400 with 6 cores 2.8GHz and Intel Core i9 7900X with 10 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i5 8400 's Advantages
Integrated graphics card
Lower TDP (65W vs 140W)
Intel Core i9 7900X 's Advantages
Larger memory bandwidth (79.47GB/s vs 41.6GB/s)
Higher base frequency (3.3GHz vs 2.8GHz)
Larger L3 cache size (14MB vs 9MB)
Score
Benchmark
Cinebench R23 Single Core
Intel Core i5 8400
1026
Intel Core i9 7900X
+17%
1203
Cinebench R23 Multi Core
Intel Core i5 8400
5798
Intel Core i9 7900X
+158%
14998
Geekbench 6 Single Core
Intel Core i5 8400
1298
Intel Core i9 7900X
+1%
1323
Geekbench 6 Multi Core
Intel Core i5 8400
4677
Intel Core i9 7900X
+82%
8536
Geekbench 5 Single Core
Intel Core i5 8400
1032
Intel Core i9 7900X
+9%
1127
Geekbench 5 Multi Core
Intel Core i5 8400
4611
Intel Core i9 7900X
+120%
10189
Passmark CPU Single Core
Intel Core i5 8400
2387
Intel Core i9 7900X
+7%
2556
Passmark CPU Multi Core
Intel Core i5 8400
9214
Intel Core i9 7900X
+127%
20991
General Parameters
Oct 2017
Release Date
May 2017
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Coffee Lake
Core Architecture
Skylake
i5-8400
Processor Number
i9-7900X
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
95 °C
CPU Performance
6
Performance Cores
10
6
Performance Core Threads
20
2.8 GHz
Performance Core Base Frequency
3.3 GHz
4 GHz
Performance Core Turbo Frequency
4.3 GHz
6
Total Core Count
10
6
Total Thread Count
20
100 MHz
Bus Frequency
100 MHz
28x
Multiplier
33x
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
14 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
44
SSE4.1, SSE4.2, AVX-2
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
