AMDOutdated for demanding workloadsDesktop

AMD Phenom 8400 Triple-Core

Explore AMD Phenom 8400 Triple-Core technical reviews, specifications and benchmark results, with practical context for performance, compatibility and upgrade comparisons.

Last updated: 2026-10-20
2.5/ 10
Technical rating

Outdated for demanding workloads

AMD Phenom 8400 Triple-Core is a Desktop processor with 3 cores and 3 threads. Its base clock is 2.1 GHz. It records a PassMark CPU Mark of 1164 and a single-thread rating of 819. Its stated TDP is 95 W.

CPU Mark1,164
105 samples
Single Thread819
Overall rank#4,530
of 6,054
Reference price—

Technical assessment

A summary based on specifications and results.

Outdated for demanding workloads
2.5Outdated for demanding workloads

AMD Phenom 8400 Triple-Core is a Desktop processor with 3 cores and 3 threads. Its base clock is 2.1 GHz. It records a PassMark CPU Mark of 1164 and a single-thread rating of 819. Its stated TDP is 95 W.

Specification context

What do these specifications mean in practice?

The AMD Phenom 8400 Triple-Core is a Desktop released in 2009. Recorded specifications include 3 cores and 3 threads, a 95 W reference TDP, a 1,164 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 1,164 CPU Mark is a broad overall-performance measure, while the 819 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 AM2. 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 95 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 Phenom 8400 Triple-Core specifications?

The main recorded details are 3 cores and 3 threads, a 95 W reference TDP, a 1,164 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the AMD Phenom 8400 Triple-Core 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 Phenom 8400 Triple-Core?

Start with AM2 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.

How much power does the AMD Phenom 8400 Triple-Core use?

The recorded reference TDP is 95 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 Athlon 64 FX-72AMD1,167 points
04AMD Phenom 8400 Triple-CoreThis CPU1,164 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

04AMD Phenom 8400 Triple-CoreThis CPU819 points

Performance per watt

Estimated as CPU Mark divided by TDP.

04AMD Phenom 8400 Triple-CoreThis CPU12.3 Mark/W
05AMD Athlon 64 FX-72AMD9.3 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
27,139.00
Data EncryptionMBytes/Sec
373.00
Extended InstructionsMillion Matrices/Sec
536.00
Find Prime NumbersMillion Primes/Sec
3.00
Floating Point MathMOps/Sec
2,941.00
Integer MathMOps/Sec
3,264.00
PhysicsFrames/Sec
102.00
Random String SortingThousand Strings/Sec
3,238.00

Core specifications

BrandAMD
CategoryDesktop
Release year2009
SocketAM2
Cores / threads3 / 3
Base clock2.10 GHz
Max turbo—
TDP95 W
Integrated graphics—

Memory support

—
Memory type—
Official speed—
Maximum capacity—

Cache hierarchy

L1I3 x 64 KB
L1D3 x 64 KB
L23 x 512 KB
L32 MB