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 A6-6400K 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. L3 cache: 0 kB. L2 cache: 1024 kB. Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,511 points. Launch price was $70.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The A6-6400K is positioned at rank #688 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar A6-6400K

Ryzen 9 7950X

MSRP: $194|Avg: $20

12379%

Core i9-10900T

MSRP: $120|Avg: $5

11697%

Ryzen 3 PRO 4355GE

MSRP: $423|Avg: $5

8493%

Ryzen Threadripper 3960X

MSRP: $1399|Avg: $85

2559%

Ryzen 9 9950X

MSRP: $649|Avg: $129

2027%

Ryzen 5 8400F

MSRP: $303|Avg: $55

1773%

Ryzen 7 PRO 2700

MSRP: $299|Avg: $60

1015%

Ryzen 5 2600X

MSRP: $229|Avg: $55

1002%

Ryzen 3 PRO 5350G

MSRP: $150|Avg: $60

913%

#10

Core Ultra 5 245KF

MSRP: $294|Avg: $189

912%

#11

Ryzen 5 5500

MSRP: $159|Avg: $85

902%

#12

Ryzen 5 3600

MSRP: $199|Avg: $80

878%

#13

Core i3-9100E

MSRP: $202|Avg: $30

866%

#14

Core Ultra 5 245K

MSRP: $319|Avg: $200

862%

#15

Core i3-8300T

MSRP: $138|Avg: $25

854%

#688

A6-6400K

MSRP: N/A|Avg: N/A

100%

#689

Core i7-7700T

MSRP: $303|Avg: $75

99%

#690

Core i3-4150T

MSRP: $117|Avg: $30

98%

#691

Core i7-3770S

MSRP: $250|Avg: $250

98%

#692

Core i7-6800K

MSRP: $434|Avg: $120

98%

#693

Core i5-4670S

MSRP: $213|Avg: $30

98%

#694

Core i5-3550

MSRP: $194|Avg: $30

98%

#695

Core i3-7300

MSRP: $184|Avg: $46

98%

#696

FX-4300

MSRP: $122|Avg: $25

97%

#697

Core i5-3450

MSRP: $184|Avg: $95

97%

#698

Celeron G550

MSRP: $52|Avg: $15

97%

#700

Core i3-4370T

MSRP: $138|Avg: $138

97%

#701

FX-6200

MSRP: $169|Avg: $25

97%

#702

FX-4150

MSRP: $137|Avg: $20

96%

#703

Core i5-2450P

MSRP: $177|Avg: $30

96%

Based on actual market prices and performance synthetic scores.

Technical Analysis

Detailed breakdown of A6-6400K specifications and capabilities.

⚡

Processing Power

The A6-6400K 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. It carries 0 kB of L3 cache, plus 1024 kB of L2 cache and 96 kB of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 1,511, placing it in the Entry Level performance tier as a Legacy generation product.

Specification	A6-6400K
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
L3 CacheShared cache — reduces memory latency for all cores	0 kB
L2 CachePer-core fast cache for frequently accessed data	1024 kB
L1 CacheUltra-fast per-core cache	96 kB
Die SizePhysical silicon area of the processor	246 mm2
Transistor CountMore transistors = more capabilities	1,178 million
Max TemperatureMaximum safe operating temperature (Tjmax)	70 °C
64-bit Support	Yes
Windows 11 Compatible	No
Unlocked MultiplierWhether the CPU can be overclocked	Yes (Overclockable)
PassMark ScoreOverall multi-threaded benchmark score	1,511

🧠

Memory & Platform

The A6-6400K 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	A6-6400K
TypeDesktop or Laptop processor	desktop
SeriesProduct family	AMD A-Series (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

It features an unlocked multiplier, allowing enthusiasts to overclock beyond stock frequencies for additional performance. Virtualization: true — enables running virtual machines efficiently (important for development and server workloads). Its primary market competitor is the Pentium G3258.

Specification	A6-6400K
OverclockingWhether CPU clock can be manually increased	✅ Unlocked
AVX-512Advanced vector instructions for AI/ML workloads	❌ Not Supported
VirtualizationHardware-assisted virtualization technology	true
Direct CompetitorMarket equivalent from rival manufacturer	Pentium G3258

🌡️

Power & Cooling

The A6-6400K 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	A6-6400K
TDPThermal Design Power — heat output under sustained workload	65 Watt
Max TemperatureMaximum safe junction temperature (Tjmax)	70 °C
Included CoolerStock cooler bundled in the box	true
Recommended CoolerSuggested aftermarket cooling solution	Stock Cooler

💰

Value Analysis

It currently holds Rank #688 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #2798 out of all indexed processors.

Specification	A6-6400K
Launch PriceOriginal retail price at launch	$70
Cost-Benefit RankPosition in overall value ranking	#688
Performance RankPosition in overall performance ranking	#2798
Release DateLaunch date	2014-01-01
Release Year	2013
DesignerArchitecture designer (e.g. Intel, AMD)	AMD