AMD Athlon II X4 638 Quad-Core vs AMD A6-6400B APU
Table of Contents
Overview:
Comparison between AMD Athlon II X4 638 Quad-Core and AMD A6-6400B APU
Both CPUs are manufactured by AMD.
AMD A6-6400B APU has a higher base speed of 3.9 GHz compared to AMD Athlon II X4 638 Quad-Core's 2.7 GHz.
AMD A6-6400B APU has a higher turbo speed of 4.1 GHz compared to AMD Athlon II X4 638 Quad-Core's GHz.
AMD Athlon II X4 638 Quad-Core has more cores (4) compared to AMD A6-6400B APU's 2 cores.
AMD Athlon II X4 638 Quad-Core supports more threads (4) compared to AMD A6-6400B APU's threads.
Both CPUs belong to the same class: Desktop.
AMD Athlon II X4 638 Quad-Core uses the FM1 socket, while AMD A6-6400B APU uses the FM2 socket.
AMD Athlon II X4 638 Quad-Core was launched in Q2 2015, while AMD A6-6400B APU was launched in Q1 2014.
Both CPUs have the same L3 cache size of MB.
Specification Summary
The AMD Athlon II X4 638 Quad-Core and AMD A6-6400B APU are two processors with distinct specifications. Below is a detailed comparison of their key features:
Manufacturer: Both processors are manufactured by AMD.
Speed: The AMD Athlon II X4 638 Quad-Core has a base speed of 2.7 GHz, while the AMD A6-6400B APU runs at 3.9 GHz.
Turbo Boost: The AMD Athlon II X4 638 Quad-Core supports a turbo speed of GHz, compared to 4.1 GHz for the AMD A6-6400B APU.
Cores: The AMD Athlon II X4 638 Quad-Core has 4 cores, while the AMD A6-6400B APU has 2 cores.
Threads: The AMD Athlon II X4 638 Quad-Core supports 4 threads, compared to threads for the AMD A6-6400B APU.
Class: Both processors are designed for Desktop use.
Socket: The AMD Athlon II X4 638 Quad-Core uses the FM1, while the AMD A6-6400B APU uses the FM2.
Launch Date: The AMD Athlon II X4 638 Quad-Core was launched on Q2 2015, while the AMD A6-6400B APU was released on Q1 2014.
L3 Cache: The AMD Athlon II X4 638 Quad-Core has MB of L3 cache, compared to MB for the AMD A6-6400B APU.
Detailed Specifications:
Specs
AMD Athlon II X4 638 Quad-Core
AMD A6-6400B APU
Manufacturer
AMD
AMD
Speed
2.7 GHz
3.9 GHz
Turbo
GHz
4.1 GHz
Cores
4
2
Threads
4
Class
Desktop
Desktop
Socket
FM1
FM2
Launched
Q2 2015
Q1 2014
L3 Cache
MB
MB
Review:
Single Core Performance:
CPU Performance in single-threaded applications
AMD Athlon II X4 638 Quad-Core:
19%
AMD A6-6400B APU:
26%
* More is Better
Multi Core Performance:
CPU Performance in multi-threaded applications
AMD Athlon II X4 638 Quad-Core
3%
AMD A6-6400B APU:
2%
* More is Better
Power Efficiency:
Power Consumption of CPU under full load
AMD Athlon II X4 638 Quad-Core: 65 watts
16.25%
AMD A6-6400B APU: 65 watts
16.25%
* Lower is Better
Launched Date:
Time when the CPU was launched
AMD Athlon II X4 638 Quad-Core : Q2 2015 ✅
AMD A6-6400B APU : Q1 2014 ✅
* Newer is Better
CPU Launch FINAL SCORE:
CPU Final Rating Ratings
AMD Athlon II X4 638 Quad-Core
AMD A6-6400B APU
Pro's and Con's
AMD Athlon II X4 638 Quad-Core – Pros and Cons
Pros:
Newer Release: The AMD Athlon II X4 638 Quad-Core was launched more recently (Q2 2015) compared to the AMD A6-6400B APU (Q1 2014). This means it benefits from the latest advancements in technology, improved efficiency, and potentially better software optimization.
Cons:
Not available
AMD A6-6400B APU – Pros and Cons
Pros:
Higher Base Clock Speed: The AMD A6-6400B APU has a higher base clock speed of 3.9 GHz compared to the AMD Athlon II X4 638 Quad-Core's 2.7 GHz. This results in better performance for single-threaded tasks and general responsiveness.
Higher Turbo Boost Speed: The AMD A6-6400B APU supports a higher turbo boost speed of 4.1 GHz compared to the AMD Athlon II X4 638 Quad-Core's GHz. This allows for better performance during peak workloads.
Faster Single-Core Performance: With a single-threaded performance score of 1608, the AMD A6-6400B APU outperforms the AMD Athlon II X4 638 Quad-Core (score: 1163). This makes it better suited for tasks that rely on single-core performance, such as gaming or everyday productivity.
Higher CPU Mark Score: The AMD A6-6400B APU has a higher CPU Mark score of NA compared to the AMD Athlon II X4 638 Quad-Core's 35.79. This indicates better overall performance across a wide range of tasks.
Cons:
Fewer Cores: The AMD A6-6400B APU has 2 cores, which is fewer than the AMD Athlon II X4 638 Quad-Core's 4 cores. This could impact performance in multi-threaded workloads, such as rendering, compiling code, or running virtual machines.
Fewer Threads: The AMD A6-6400B APU has threads, which is fewer than the AMD Athlon II X4 638 Quad-Core's 4 threads. This may limit its ability to handle highly parallel workloads efficiently.
Lower Multi-Core Performance: In multi-threaded tasks, the AMD A6-6400B APU scores 1616, which is lower than the AMD Athlon II X4 638 Quad-Core's score of 2250. This makes the AMD Athlon II X4 638 Quad-Core a better choice for heavy multitasking or parallel processing.
Productivity
AMD Athlon II X4 638 Quad-Core
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.
AMD A6-6400B APU
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
AMD Athlon II X4 638 Quad-Core
Ideal for Entry Level level gaming (when paired with a dedicated GPU) and Entry Level level computing.
AMD A6-6400B APU
Ideal for Entry Level level gaming (when paired with a dedicated GPU) and Entry Level level computing.
Verdict
AMD Athlon II X4 638 Quad-Core
The AMD Athlon II X4 638 Quad-Core 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.
AMD A6-6400B APU
The AMD A6-6400B APU 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.
