AMD

AMD A6-6400B

AMD processor specifications and benchmark scores

2
Cores
2
Threads
4.1
GHz Boost
65W
TDP
🔓Unlocked 🖥️Integrated GPU

AMD A6-6400B Specifications

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A6-6400B Core Configuration

Processing cores and threading

The AMD A6-6400B features 2 physical cores and 2 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.

Cores
2
Threads
2
SMP CPUs
1
⏱️

A6-6400B Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in A6-6400B benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The A6-6400B by AMD can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
3.9 GHz
Boost Clock
4.1 GHz
Multiplier
39x 🔓
💾

AMD's A6-6400B Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the A6-6400B processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The A6-6400B's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
96 KB
L2 Cache
1 MB (shared)
🏗️

Piledriver Architecture & Process

Manufacturing and design details

The AMD A6-6400B is built on AMD's 32 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in A6-6400B incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
Piledriver
Codename
Richland
Process Node
32 nm
Foundry
GlobalFoundries
Transistors
1,303 million
Die Size
246 mm²
Generation
A6 (Richland)
🔢

Piledriver Instruction Set Features

Supported CPU instructions and extensions

The A6-6400B by AMD supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.

MMX
SSE
SSE2
SSE3
SSSE3
SSE4A
SSE4.1
SSE4.2
AES
AVX
FMA3
BMI1
AMD64
AMD-V
🔌

A6-6400B Power & Thermal

TDP and power specifications

The AMD A6-6400B has a TDP (Thermal Design Power) of 65W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.

TDP
65W
🔧

AMD Socket FM2 Platform & Socket

Compatibility information

The A6-6400B uses the AMD Socket FM2 socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.

Socket
AMD Socket FM2
Chipsets
A88X, A85X, A78, A75, A68H, A55
PCIe
Gen 2
Package
µPGA
DDR5

AMD Socket FM2 Memory Support

RAM compatibility and speeds

Memory support specifications for the A6-6400B define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the A6-6400B determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.

Memory Type
DDR3
Memory Bus
Dual-channel
Memory Bandwidth
29.9 GB/s
🖥️

AMD's A6-6400B Integrated Graphics

Built-in GPU specifications

The AMD A6-6400B includes integrated graphics, eliminating the need for a dedicated GPU in basic computing scenarios. Integrated graphics are ideal for office productivity, video playback, and light gaming. While not designed for demanding GPU benchmarks, the iGPU in the A6-6400B provides hardware video encoding and decoding capabilities. This makes the processor suitable for compact builds, HTPCs, and systems where power efficiency is prioritized over gaming performance.

iGPU
Radeon HD 8470D
Graphics Model
Radeon HD 8470D
📦

A6-6400B Product Information

Release and pricing details

The AMD A6-6400B is manufactured by AMD and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the A6-6400B by AMD offers a specific balance of performance, features, and cost within AMD's product lineup.

Manufacturer
AMD
Release Date
Jun 2013
Market
Desktop
Status
End-of-life
Part Number
AD640BOKA23HL

A6-6400B Benchmark Scores

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No benchmark data available for this CPU.

About AMD A6-6400B

The AMD AMD A6-6400B is built on a mature 32 nm manufacturing process that balances power efficiency with reasonable silicon yield. Its dual‑core, dual‑thread architecture operates at a base clock of 3.90 GHz and can boost to 4.10 GHz, delivering sufficient performance for everyday office tasks. With a thermal design power of 65 W, the processor fits comfortably within standard cooling solutions for FM2‑socket motherboards. Although official benchmark scores are not published, the chip’s specifications place it in the low‑mid range of legacy A‑series processors. The lack of high‑end performance metrics means it is best compared against entry‑level CPUs rather than flagship models. Pricing at the time of release positioned the AMD AMD A6-6400B in the budget segment, making it an economical choice for cost‑conscious deployments.

For system integrators, the 65 W TDP allows the

The Intel Equivalent of A6-6400B

Looking for a similar processor from Intel? The Intel Core i5-4570T offers comparable performance and features in the Intel lineup.

Intel Core i5-4570T

Intel • 2 Cores

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