AMDOutdated for demanding workloadsDesktop

AMD A6-6400K APU

Explore AMD A6-6400K APU technical reviews, specifications and benchmark results, with practical context for performance, compatibility and upgrade comparisons.

Last updated: 2026-10-20
3.2/ 10
Technical rating

Outdated for demanding workloads

AMD A6-6400K APU is a Desktop processor with 2 cores and 0 threads. It runs at 3.9 GHz and boosts up to 4.1 GHz. It records a PassMark CPU Mark of 1495 and a single-thread rating of 1440. Its stated TDP is 65 W.

CPU Mark1,495
662 samples
Single Thread1,440
Overall rank#4,234
of 6,054
Reference price$75.00

Technical assessment

A summary based on specifications and results.

Outdated for demanding workloads
3.2Outdated for demanding workloads

AMD A6-6400K APU is a Desktop processor with 2 cores and 0 threads. It runs at 3.9 GHz and boosts up to 4.1 GHz. It records a PassMark CPU Mark of 1495 and a single-thread rating of 1440. Its stated TDP is 65 W.

Specification context

What do these specifications mean in practice?

The AMD A6-6400K APU is a Desktop released in 2013. Recorded specifications include up to 4.10 GHz turbo, a 65 W reference TDP, a 1,495 CPU Mark. Use these figures to understand its position, then compare the results with your software and the complete platform.

Reading guide

Read the performance results

The 1,495 CPU Mark is a broad overall-performance measure, while the 1,440 single-thread result adds context for less-parallel work. Compare the nearby alternatives on this page and do not treat one score as a verdict for every application.

Platform and compatibility

It uses socket FM2. A matching socket is only the first check; confirm the official motherboard CPU-support list, BIOS revision and board power limits.

Memory and power

The 65 W TDP helps size the cooling class, but it is not the same as peak wall-power consumption.

FAQ

Common processor questions

What are the key AMD A6-6400K APU specifications?

The main recorded details are up to 4.10 GHz turbo, a 65 W reference TDP, a 1,495 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the AMD A6-6400K APU good for gaming?

The product name or CPU Mark alone cannot answer that. Check single-thread performance, core count, the target graphics card, gaming resolution and results from the games you play.

Which motherboards support the AMD A6-6400K APU?

Start with FM2 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.

How much power does the AMD A6-6400K APU use?

The recorded reference TDP is 65 W. Real consumption can be lower or higher depending on power limits, motherboard, workload and cooling.

This guidance interprets recorded specifications and results; it does not claim hands-on device testing. Results can vary with motherboard, power, memory and cooling.

Multi-axis comparison

How does this processor compare?

A direct comparison with nearby processors from the same brand and a similar core count.

5 CPU

Overall and multi-core performance

A higher CPU Mark indicates stronger overall performance.

01Intel Pentium G860 @ 3.00GHzIntel1,500 points
02Intel Pentium G850 @ 2.90GHzIntel1,497 points
03AMD A6-6400K APUThis CPU1,495 points
04AMD Athlon II X3 425eAMD1,493 points
05ZHAOXIN [email protected]+GHzZHAOXIN1,489 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

01AMD A6-6400K APUThis CPU1,440 points
02Intel Pentium G860 @ 3.00GHzIntel1,378 points
03Intel Pentium G850 @ 2.90GHzIntel1,367 points

Performance per watt

Estimated as CPU Mark divided by TDP.

01AMD Athlon II X3 425eAMD33.2 Mark/W
04AMD A6-6400K APUThis CPU23.0 Mark/W

Bars are relative to the processors shown here, not a global ranking of every CPU.

Detailed benchmark results

Snapshot from 2026-10-20

Data CompressionKBytes/Sec
25,191.00
Data EncryptionMBytes/Sec
456.20
Extended InstructionsMillion Matrices/Sec
620.00
Find Prime NumbersMillion Primes/Sec
5.00
Floating Point MathMOps/Sec
2,597.00
Integer MathMOps/Sec
9,668.00
PhysicsFrames/Sec
139.00
Random String SortingThousand Strings/Sec
3,140.00

Core specifications

BrandAMD
CategoryDesktop
Release year2013
SocketFM2
Cores / threads2 / —
Base clock3.90 GHz
Max turbo4.10 GHz
TDP65 W
Integrated graphics—

Memory support

—
Memory type—
Official speed—
Maximum capacity—

Cache hierarchy

L1I2 x 16 KB
L1D2 x 64 KB
L22 x 1024 KB