Comparison between Intel Core i5-9600K and Intel Core i5-8400
Both CPUs are manufactured by Intel.
Intel Core i5-9600K has a higher base speed of 3.7 GHz compared to Intel Core i5-8400's 2.8 GHz.
Intel Core i5-9600K has a higher turbo speed of 4.6 GHz compared to Intel Core i5-8400's 4.0 GHz.
Both CPUs have the same number of cores (6).
Both CPUs support the same number of threads (6).
Both CPUs belong to the same class: Desktop.
Both CPUs use the same socket type: FCLGA1151-2.
Intel Core i5-9600K was launched in Q4 2018, while Intel Core i5-8400 was launched in Q4 2017.
Both CPUs have the same L3 cache size of 9 MB.
Specification Summary
The Intel Core i5-9600K and Intel Core i5-8400 are two processors with distinct specifications. Below is a detailed comparison of their key features:
Manufacturer: Both processors are manufactured by Intel.
Speed: The Intel Core i5-9600K has a base speed of 3.7 GHz, while the Intel Core i5-8400 runs at 2.8 GHz.
Turbo Boost: The Intel Core i5-9600K supports a turbo speed of 4.6 GHz, compared to 4.0 GHz for the Intel Core i5-8400.
Cores: The Intel Core i5-9600K has 6 cores, while the Intel Core i5-8400 has 6 cores.
Threads: The Intel Core i5-9600K supports 6 threads, compared to 6 threads for the Intel Core i5-8400.
Class: Both processors are designed for Desktop use.
Socket: The Intel Core i5-9600K uses the FCLGA1151-2, while the Intel Core i5-8400 uses the FCLGA1151-2.
Launch Date: The Intel Core i5-9600K was launched on Q4 2018, while the Intel Core i5-8400 was released on Q4 2017.
L3 Cache: The Intel Core i5-9600K has 9 MB of L3 cache, compared to 9 MB for the Intel Core i5-8400.
Detailed Specifications:
Specs
Intel Core i5-9600K
Intel Core i5-8400
Manufacturer
Intel
Intel
Speed
3.7 GHz
2.8 GHz
Turbo
4.6 GHz
4.0 GHz
Cores
6
6
Threads
6
6
Class
Desktop
Desktop
Socket
FCLGA1151-2
FCLGA1151-2
Launched
Q4 2018
Q4 2017
L3 Cache
9 MB
9 MB
Review:
Single Core Performance:
CPU Performance in single-threaded applications
Intel Core i5-9600K:
45%
Intel Core i5-8400:
39%
* More is Better
Multi Core Performance:
CPU Performance in multi-threaded applications
Intel Core i5-9600K
15%
Intel Core i5-8400:
13%
* More is Better
Power Efficiency:
Power Consumption of CPU under full load
Intel Core i5-9600K: 95 watts
23.75%
Intel Core i5-8400: 65 watts
16.25%
* Lower is Better
Launched Date:
Time when the CPU was launched
Intel Core i5-9600K : Q4 2018 ✅
Intel Core i5-8400 : Q4 2017 ✅
* Newer is Better
CPU Launch FINAL SCORE:
CPU Final Rating Ratings
Intel Core i5-9600K
Intel Core i5-8400
Pro's and Con's
Intel Core i5-9600K – Pros and Cons
Pros:
Newer Release: The Intel Core i5-9600K was launched more recently (Q4 2018) compared to the Intel Core i5-8400 (Q4 2017). This means it benefits from the latest advancements in technology, improved efficiency, and potentially better software optimization.
Higher Base Clock Speed: The Intel Core i5-9600K has a higher base clock speed of 3.7 GHz compared to the Intel Core i5-8400's 2.8 GHz. This results in better performance for single-threaded tasks and general responsiveness.
Higher Turbo Boost Speed: The Intel Core i5-9600K supports a higher turbo boost speed of 4.6 GHz compared to the Intel Core i5-8400's 4.0 GHz. This allows for better performance during peak workloads.
Faster Single-Core Performance: With a single-threaded performance score of 2736, the Intel Core i5-9600K outperforms the Intel Core i5-8400 (score: 2380). This makes it better suited for tasks that rely on single-core performance, such as gaming or everyday productivity.
Cons:
Higher Power Consumption: The Intel Core i5-9600K has a higher TDP of 95W compared to the Intel Core i5-8400's 65W. This means it may consume more power, leading to higher energy costs and potentially more heat generation, which could require better cooling solutions.
Intel Core i5-8400 – Pros and Cons
Pros:
Higher CPU Mark Score: The Intel Core i5-8400 has a higher CPU Mark score of 105.99 compared to the Intel Core i5-9600K's 75.06. This indicates better overall performance across a wide range of tasks.
Cons:
Lower Multi-Core Performance: In multi-threaded tasks, the Intel Core i5-8400 scores 9235, which is lower than the Intel Core i5-9600K's score of 10659. This makes the Intel Core i5-9600K a better choice for heavy multitasking or parallel processing.
Productivity
Intel Core i5-9600K
This cpu Handles Entry Level level office applications, web browsing, and media playback with ease.
It can also be used for Entry Level level multitasking or CPU-intensive tasks like video editing or 3D rendering.
Intel Core i5-8400
This cpu Handles Entry Level level office applications, web browsing, and media playback with ease.
It can also be used for Entry Level level multitasking or CPU-intensive tasks like video editing or 3D rendering.
Gaming
Intel Core i5-9600K
Ideal for Entry Level level gaming (when paired with a dedicated GPU) and Entry Level level computing.
Intel Core i5-8400
Ideal for Entry Level level gaming (when paired with a dedicated GPU) and Entry Level level computing.
Verdict
Intel Core i5-9600K
The Intel Core i5-9600K is a reliable and Entry Level processor for your PC builds. It delivers excellent value for users with Entry Level computing needs or those building a New PC.
Intel Core i5-8400
The Intel Core i5-8400 is a reliable and Entry Level processor for your PC builds. It delivers excellent value for users with Entry Level computing needs or those building a New PC.
