AMD A6-6400K Review & Specs

AMD A6-6400K Dual-Core 3.9GHz Socket FM2 HD8470D 65W Boxed AD640KOKHLBOX

AMD A6-6400K Dual-Core 3.9GHz Socket FM2 HD8470D 65W Boxed AD640KOKHLBOX


AMD's third generation APU provides another impressive step forward in technology. The Accelerated Processing Unit (APU) boasts 42% of it's genetic make up as GPU based, utilizing the Radeon HD8xxx series, making this the industry's fastest APU. That allows AMD to deliver balanced architectures for future heterogeneous computing while winning at today's gaming, compute, imaging, and video workloads. Nowhere else is the best performance for mainstream computing be found for such an incredible value!

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Specs Overview

Release Date June 2013

* First availability for purchase, it may not correspond to the actual market launch date.

Series A6 Series
Core Name Richland
Socket FM2
Integrated Graphics Radeon HD 8470D
CPU Cores 2
CPU Threads 2
CPU Clock Rate 3900MHz
CPU Turbo Clock Rate -
CPU Cooler included
Manufacturing Process 32 nm
Cache L3 0.00MB


  • Competitive pricing
  • GPU performances
  • Overclock capabilities


  • CPU performances compared to Intel's chip

Score Pangoly


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* Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.
General information
Type CPU / Microprocessor
Market segment Desktop
Family AMD A6-Series
Model number A6-6400K
CPU part numbers AD640KOKHLBOX is a boxed microprocessor
Frequency 3900 MHz
Turbo frequency 4100 MHz
Package 904-pin lidded micro-PGA package
Socket Socket FM2
Size 1.57" x 1.57" / 4cm x 4cm
Introduction date June 4, 2013
Architecture / Microarchitecture
Microarchitecture Piledriver
Processor core Richland
Manufacturing process 0.032 micron
Data width 64 bit
The number of cores 2
The number of threads 2
Floating Point Unit Integrated
Level 1 cache size 64 KB shared instruction caches
2 x 16 KB data caches
Level 2 cache size 1 MB shared cache
Level 3 cache size None
Multiprocessing Uniprocessor
  • MMX instructions
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
  • SSE3 / Streaming SIMD Extensions 3
  • SSSE3 / Supplemental Streaming SIMD Extensions 3
  • SSE4 / SSE4.1 + SSE4.2 / Streaming SIMD Extensions 4
  • SSE4a
  • AES / Advanced Encryption Standard instructions
  • ABM / Advanced Bit Manipulation
  • AVX / Advanced Vector Extensions
  • BMI / Bit Manipulation instructions
  • F16C / 16-bit Floating-Point conversion instructions
  • FMA3 / 3-operand Fused Multiply-Add instructions
  • FMA4 / 4-operand Fused Multiply-Add instructions
  • TBM / Trailing Bit Manipulation instructions
  • XOP / eXtended Operations instructions
  • AMD64 / AMD 64-bit technology
  • VT / Virtualization technology
  • EVP / Enhanced Virus Protection
  • Turbo Core 3.0 technology
Low power features PowerNow!
Integrated peripherals / components
Integrated graphics
  • GPU Type: Radeon HD 8470D
    Shader cores: 192
    Base frequency (MHz): 800
Memory controller
  • The number of controllers: 1
    Memory channels: 2
    Supported memory: DDR3-1866
Other peripherals
  • PCI Express 2.0
  • HD Media Accelerator
Electrical / Thermal parameters
Maximum operating temperature 70°C
Thermal Design Power 65 Watt

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