Home Comparison Intel Core i9 7900X vs Intel Core i5 8400

Intel Core i9 7900X vs Intel Core i5 8400

We compared two desktop CPUs: Intel Core i9 7900X with 10 cores 3.3GHz 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 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)
Intel Core i5 8400 's Advantages
Integrated graphics card
Lower TDP (65W vs 140W)

Score

Benchmark

Cinebench R23 Single Core
Intel Core i9 7900X +17%
1203
Intel Core i5 8400
1026
Cinebench R23 Multi Core
Intel Core i9 7900X +158%
14998
Intel Core i5 8400
5798
Geekbench 6 Single Core
Intel Core i9 7900X +1%
1323
Intel Core i5 8400
1298
Geekbench 6 Multi Core
Intel Core i9 7900X +82%
8536
Intel Core i5 8400
4677
Geekbench 5 Single Core
Intel Core i9 7900X +9%
1127
Intel Core i5 8400
1032
Geekbench 5 Multi Core
Intel Core i9 7900X +120%
10189
Intel Core i5 8400
4611
Passmark CPU Single Core
Intel Core i9 7900X +7%
2556
Intel Core i5 8400
2387
Passmark CPU Multi Core
Intel Core i9 7900X +127%
20991
Intel Core i5 8400
9214
VS

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
i9-7900X
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
95 °C
Peak Operating Temperature
100 °C

CPU Performance

10
Performance Cores
6
20
Performance Core Threads
6
3.3 GHz
Performance Core Base Frequency
2.8 GHz
4.3 GHz
Performance Core Turbo Frequency
4 GHz
10
Total Core Count
6
20
Total Thread Count
6
100 MHz
Bus Frequency
100 MHz
33x
Multiplier
28x
64 K per core
L1 Cache
64 K per core
1 MB per core
L2 Cache
256 K per core
14 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
44
PCIe Lanes
16
SSE4.1, SSE4.2, AVX-2, AVX-512
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2

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