A6-6400B
AMD
PassMark
1,573
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Overview
The A6-6400B is manufactured by AMD. It was released in 2014-01-01. It is based on the Richland (2013−2014) architecture. It features 2 cores and 2 threads. Base frequency is 3.9 GHz, with boost up to 4.1 GHz. L2 cache: 1 MB (total). Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,573 points. Launch price was $70.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The A6-6400B is positioned at rank #655 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar A6-6400B
Technical Analysis
Detailed breakdown of A6-6400B specifications and capabilities.
Processing Power
The A6-6400B is a 2-core / 2-thread processor based on the Richland (2013−2014) architecture, manufactured on a 32 nm process node. It reaches a maximum boost clock of 4.1 GHz from a base frequency of 3.9 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 1,573, placing it in the Entry Level performance tier as a Legacy generation product.
| Specification | A6-6400B |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 2C / 2T |
| Max Boost ClockPeak single-core speed under boost | 4.1 GHz |
| Base ClockGuaranteed minimum operating frequency | 3.9 GHz |
| ArchitectureCPU microarchitecture design | Richland (2013−2014) |
| Process NodeFabrication technology — smaller = more efficient | 32 nm |
| L2 CachePer-core fast cache for frequently accessed data | 1 MB (total) |
| L1 CacheUltra-fast per-core cache | 96K |
| Die SizePhysical silicon area of the processor | 246 mm2 |
| Transistor CountMore transistors = more capabilities | 1,303 million |
| 64-bit Support | Yes |
| Unlocked MultiplierWhether the CPU can be overclocked | Yes (Overclockable) |
| PassMark ScoreOverall multi-threaded benchmark score | 1,573 |
Memory & Platform
The A6-6400B fits into the FM2 socket and supports PCIe 3.0 with 16 total PCIe lanes for expansion cards and storage. It supports DDR3-1866 memory at speeds up to 1866 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 32 across 2 channels (dual-channel doubles bandwidth). Integrated graphics: Radeon HD 8470D — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.
| Specification | A6-6400B |
|---|---|
| TypeDesktop or Laptop processor | desktop |
| SocketMotherboard socket required | FM2 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 3.0 |
| PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion | 16 |
| RAM TypeSupported memory standard | DDR3-1866 |
| Max RAM SpeedMaximum officially supported memory frequency | 1866 |
| Max RAM CapacityMaximum installable memory | 32 |
| RAM ChannelsDual-channel doubles bandwidth vs single-channel | 2 |
| ECC SupportError-Correcting Code memory — prevents data corruption | No |
| Integrated GPUBuilt-in graphics processor | Radeon HD 8470D |
| Compatible ChipsetsMotherboard chipsets that support this CPU | FM2 |
| Max CPUs in ConfigMulti-socket support for servers | 1 |
Advanced Features
Virtualization: true — enables running virtual machines efficiently (important for development and server workloads). Its primary market competitor is the Pentium G3220.
| Specification | A6-6400B |
|---|---|
| OverclockingWhether CPU clock can be manually increased | 🔒 Locked |
| AVX-512Advanced vector instructions for AI/ML workloads | ❌ Not Supported |
| VirtualizationHardware-assisted virtualization technology | true |
| Direct CompetitorMarket equivalent from rival manufacturer | Pentium G3220 |
Power & Cooling
The A6-6400B has a rated TDP (Thermal Design Power) of 65 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. It ships with the true stock cooler. Recommended cooling: Stock Cooler.
| Specification | A6-6400B |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 65 Watt |
| Included CoolerStock cooler bundled in the box | true |
| Recommended CoolerSuggested aftermarket cooling solution | Stock Cooler |
Value Analysis
It currently holds Rank #655 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #2762 out of all indexed processors.
| Specification | A6-6400B |
|---|---|
| Launch PriceOriginal retail price at launch | $70 |
| Cost-Benefit RankPosition in overall value ranking | #655 |
| Performance RankPosition in overall performance ranking | #2762 |
| Release DateLaunch date | 2014-01-01 |
| Release Year | 2013 |
| DesignerArchitecture designer (e.g. Intel, AMD) | AMD |
| ManufacturerFabrication foundry (e.g. TSMC) | GlobalFoundries |
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Our Recommendation for A6-6400B
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