AMDOutdated for demanding workloadsServer

AMD Opteron X3421 APU

Explore AMD Opteron X3421 APU technical reviews, specifications and benchmark results, with practical context for server workloads and platform planning.

Last updated: 2026-10-20
3.6/ 10
Technical rating

Outdated for demanding workloads

AMD Opteron X3421 APU is a Server processor with 4 cores and 0 threads. It runs at 2.1 GHz and boosts up to 3.4 GHz. It records a PassMark CPU Mark of 3306 and a single-thread rating of 1418. Its stated TDP is 35 W.

CPU Mark3,306
29 samples
Single Thread1,418
Overall rank#3,094
of 6,054
Reference price—

Technical assessment

A summary based on specifications and results.

Outdated for demanding workloads
3.6Outdated for demanding workloads

AMD Opteron X3421 APU is a Server processor with 4 cores and 0 threads. It runs at 2.1 GHz and boosts up to 3.4 GHz. It records a PassMark CPU Mark of 3306 and a single-thread rating of 1418. Its stated TDP is 35 W.

Specification context

What do these specifications mean in practice?

The AMD Opteron X3421 APU is a Server released in 2017. Recorded specifications include up to 3.40 GHz turbo, a 35 W reference TDP, a 3,306 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 3,306 CPU Mark is a broad overall-performance measure, while the 1,418 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

No confirmed socket is recorded for this processor. Verify the exact device or motherboard with the manufacturer before planning an upgrade.

Memory and power

The 35 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 Opteron X3421 APU specifications?

The main recorded details are up to 3.40 GHz turbo, a 35 W reference TDP, a 3,306 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the AMD Opteron X3421 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 Opteron X3421 APU?

A confirmed socket is not recorded here. Use the device model or manufacturer specifications to identify compatible hardware.

How much power does the AMD Opteron X3421 APU use?

The recorded reference TDP is 35 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 Xeon X3480 @ 3.07GHzIntel3,335 points
02AMD Opteron X3421 APUThis CPU3,306 points
03Intel Xeon X5570 @ 2.93GHzIntel3,306 points
04Intel Xeon L5609 @ 1.87GHzIntel3,298 points
05Intel Xeon Platinum 8475BIntel3,280 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

01Intel Xeon Platinum 8475BIntel2,581 points
02Intel Xeon X3480 @ 3.07GHzIntel1,431 points
03AMD Opteron X3421 APUThis CPU1,418 points
04Intel Xeon X5570 @ 2.93GHzIntel1,395 points
05Intel Xeon L5609 @ 1.87GHzIntel1,160 points

Performance per watt

Estimated as CPU Mark divided by TDP.

01AMD Opteron X3421 APUThis CPU94.5 Mark/W
02Intel Xeon L5609 @ 1.87GHzIntel82.5 Mark/W
03Intel Xeon X3480 @ 3.07GHzIntel35.1 Mark/W
04Intel Xeon X5570 @ 2.93GHzIntel34.8 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
55,307.00
Data EncryptionMBytes/Sec
1,049.00
Extended InstructionsMillion Matrices/Sec
1,894.00
Find Prime NumbersMillion Primes/Sec
11.00
Floating Point MathMOps/Sec
5,478.00
Integer MathMOps/Sec
17,720.00
PhysicsFrames/Sec
244.00
Random String SortingThousand Strings/Sec
5,928.00

Core specifications

BrandAMD
CategoryServer
Release year2017
Socket—
Cores / threads4 / —
Base clock2.10 GHz
Max turbo3.40 GHz
TDP35 W
Integrated graphics—

Memory support

—
Memory type—
Official speed—
Maximum capacity—

Cache hierarchy

L1I4 x 32 KB
L1D4 x 96 KB
L24 x 1024 KB