Intel Core i5 9400 vs Intel Core i9 9940X
We compared two desktop CPUs: Intel Core i5 9400 with 6 cores 2.9GHz and Intel Core i9 9940X with 14 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 9400 's Advantages
Integrated graphics card
Lower TDP (65W vs 165W)
Intel Core i9 9940X 's Advantages
Larger memory bandwidth (85GB/s vs 41.6GB/s)
Higher base frequency (3.3GHz vs 2.9GHz)
Larger L3 cache size (20MB vs 9MB)
Score
Benchmark
Geekbench 6 Single Core
Intel Core i5 9400
1102
Intel Core i9 9940X
+20%
1328
Geekbench 6 Multi Core
Intel Core i5 9400
2309
Intel Core i9 9940X
+323%
9787
Geekbench 5 Single Core
Intel Core i5 9400
1048
Intel Core i9 9940X
+13%
1189
Geekbench 5 Multi Core
Intel Core i5 9400
4599
Intel Core i9 9940X
+212%
14374
Passmark CPU Single Core
Intel Core i5 9400
2457
Intel Core i9 9940X
+6%
2608
Passmark CPU Multi Core
Intel Core i5 9400
9431
Intel Core i9 9940X
+200%
28355
General Parameters
Jan 2019
Release Date
Oct 2018
Intel
Manufacturer
Intel
Desktop
Type
Desktop
x86-64
Instruction Set
x86-64
Coffee Lake
Core Architecture
Skylake
i5-9400
Processor Number
i9-9940X
LGA-1151
Socket
LGA-2066
UHD Graphics 630
Integrated Graphics
N/A
-
-
-
Package
-
-
-
14 nm
Manufacturing Process
14 nm
-
-
-
65 W
Power Consumption
165 W
-
-
-
100 °C
Peak Operating Temperature
88 °C
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CPU Performance
6
Performance Cores
14
6
Performance Core Threads
28
2.9 GHz
Performance Core Base Frequency
3.3 GHz
4.1 GHz
Performance Core Turbo Frequency
4.4 GHz
-
-
-
-
-
-
-
-
-
-
-
-
6
Total Core Count
14
6
Total Thread Count
28
100 MHz
Bus Frequency
100 MHz
29x
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
20 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
85 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
-
AI Accelerator
-
-
-
-
-
-
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
-
