AMDOutdated for demanding workloadsDesktop

AMD Phenom II X4 840T

Explore AMD Phenom II X4 840T 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Outdated for demanding workloads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 Phenom II X4 840T is a Desktop processor with 4 cores and 4 threads. It runs at 2.9 GHz and boosts up to 3.2 GHz. It records a PassMark CPU Mark of 2337 and a single-thread rating of 1275. Its stated TDP is 95 W.

CPU Mark2,337
161 samples
Single Thread1,275
Overall rank#3,623
of 6,054
Reference price$58.02

Technical assessment

A summary based on specifications and results.

Outdated for demanding workloads
3.4Outdated for demanding workloads

AMD Phenom II X4 840T is a Desktop processor with 4 cores and 4 threads. It runs at 2.9 GHz and boosts up to 3.2 GHz. It records a PassMark CPU Mark of 2337 and a single-thread rating of 1275. Its stated TDP is 95 W.

Specification context

What do these specifications mean in practice?

The AMD Phenom II X4 840T is a Desktop released in 2010. Recorded specifications include 4 cores and 4 threads, up to 3.20 GHz turbo, a 95 W reference TDP, a 2,337 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 2,337 CPU Mark is a broad overall-performance measure, while the 1,275 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+/AM3. 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 II X4 840T specifications?

The main recorded details are 4 cores and 4 threads, up to 3.20 GHz turbo, a 95 W reference TDP, a 2,337 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the AMD Phenom II X4 840T 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 II X4 840T?

Start with AM2+/AM3 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 II X4 840T 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 Phenom II X4 B40AMD2,341 points
02AMD Phenom II X4 B45AMD2,340 points
03AMD Phenom II X4 840TThis CPU2,337 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

03AMD Phenom II X4 840TThis CPU1,275 points
04AMD Phenom II X4 B40AMD1,241 points
05AMD Phenom II X4 B45AMD1,233 points

Performance per watt

Estimated as CPU Mark divided by TDP.

03AMD Phenom II X4 840TThis CPU24.6 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
52,086.00
Data EncryptionMBytes/Sec
652.90
Extended InstructionsMillion Matrices/Sec
1,197.00
Find Prime NumbersMillion Primes/Sec
15.00
Floating Point MathMOps/Sec
4,692.00
Integer MathMOps/Sec
6,370.00
PhysicsFrames/Sec
227.00
Random String SortingThousand Strings/Sec
6,460.00

Core specifications

BrandAMD
CategoryDesktop
Release year2010
SocketAM2+/AM3
Cores / threads4 / 4
Base clock2.90 GHz
Max turbo3.20 GHz
TDP95 W
Integrated graphics—

Memory support

—
Memory type—
Official speed—
Maximum capacity—

Cache hierarchy

L1I4 x 64 KB
L1D4 x 64 KB
L24 x 512 KB
L36 MB