AMDOutdated for demanding workloadsDesktop

AMD A8-3870K APU

Explore AMD A8-3870K APU technical reviews, specifications and benchmark results, with practical context for performance, compatibility and upgrade comparisons.

Last updated: 2026-10-20
3.4/ 10
Technical rating

Outdated for demanding workloads

AMD A8-3870K APU is a Desktop processor with 4 cores and 4 threads. Its base clock is 3 GHz. It records a PassMark CPU Mark of 2406 and a single-thread rating of 1231. Its stated TDP is 100 W.

CPU Mark2,406
624 samples
Single Thread1,231
Overall rank#3,581
of 6,054
Reference price$234.79

Technical assessment

A summary based on specifications and results.

Outdated for demanding workloads
3.4Outdated for demanding workloads

AMD A8-3870K APU is a Desktop processor with 4 cores and 4 threads. Its base clock is 3 GHz. It records a PassMark CPU Mark of 2406 and a single-thread rating of 1231. Its stated TDP is 100 W.

Specification context

What do these specifications mean in practice?

The AMD A8-3870K APU is a Desktop released in 2011. Recorded specifications include 4 cores and 4 threads, a 100 W reference TDP, a 2,406 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 2,406 CPU Mark is a broad overall-performance measure, while the 1,231 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 FM1. 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 100 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 A8-3870K APU specifications?

The main recorded details are 4 cores and 4 threads, a 100 W reference TDP, a 2,406 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the AMD A8-3870K 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 A8-3870K APU?

Start with FM1 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.

How much power does the AMD A8-3870K APU use?

The recorded reference TDP is 100 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.

01AMD Phenom II X4 B35AMD2,417 points
03AMD A8-3870K APUThis CPU2,406 points
05Intel Core i5-655K @ 3.20GHzIntel2,394 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

03Intel Core i5-655K @ 3.20GHzIntel1,475 points
04AMD A8-3870K APUThis CPU1,231 points
05AMD Phenom II X4 B35AMD1,192 points

Performance per watt

Estimated as CPU Mark divided by TDP.

04AMD A8-3870K APUThis CPU24.1 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
53,145.00
Data EncryptionMBytes/Sec
627.90
Extended InstructionsMillion Matrices/Sec
1,344.00
Find Prime NumbersMillion Primes/Sec
11.00
Floating Point MathMOps/Sec
5,436.00
Integer MathMOps/Sec
7,066.00
PhysicsFrames/Sec
197.00
Random String SortingThousand Strings/Sec
6,461.00

Core specifications

BrandAMD
CategoryDesktop
Release year2011
SocketFM1
Cores / threads4 / 4
Base clock3.00 GHz
Max turbo—
TDP100 W
Integrated graphics—

Memory support

—
Memory type—
Official speed—
Maximum capacity—

Cache hierarchy

L1I4 x 64 KB
L1D4 x 64 KB
L24 x 1024 KB