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Intel Core i5-9400 @ 2.90GHz

Explore Intel Core i5-9400 @ 2.90GHz technical reviews, specifications and benchmark results, with practical context for performance, compatibility and upgrade comparisons.

Last updated: 2026-10-20
5.6/ 10
Technical rating

Good

Intel Core i5-9400 @ 2.90GHz is a Desktop processor with 6 cores and 6 threads. It runs at 2.9 GHz and boosts up to 4.1 GHz. It records a PassMark CPU Mark of 9350 and a single-thread rating of 2412. Its stated TDP is 65 W.

CPU Mark9,350
3,385 samples
Single Thread2,412
Overall rank#1,811
of 6,054
Reference price$81.77

Technical assessment

A summary based on specifications and results.

Good
5.6Good

Intel Core i5-9400 @ 2.90GHz is a Desktop processor with 6 cores and 6 threads. It runs at 2.9 GHz and boosts up to 4.1 GHz. It records a PassMark CPU Mark of 9350 and a single-thread rating of 2412. Its stated TDP is 65 W.

Specification context

What do these specifications mean in practice?

The Intel Core i5-9400 @ 2.90GHz is a Desktop released in 2019. Recorded specifications include 6 cores and 6 threads, up to 4.10 GHz turbo, a 65 W reference TDP, a 9,350 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 9,350 CPU Mark is a broad overall-performance measure, while the 2,412 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 LGA1151-2. A matching socket is only the first check; confirm the official motherboard CPU-support list, BIOS revision and board power limits.

Memory and power

Recorded memory support: DDR4-2666. 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 Intel Core i5-9400 @ 2.90GHz specifications?

The main recorded details are 6 cores and 6 threads, up to 4.10 GHz turbo, a 65 W reference TDP, a 9,350 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the Intel Core i5-9400 @ 2.90GHz 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 Intel Core i5-9400 @ 2.90GHz?

Start with LGA1151-2 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.

How much power does the Intel Core i5-9400 @ 2.90GHz 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.

02AMD Ryzen 5 40AMD9,370 points
03AMD Ryzen 5 2500XAMD9,359 points
04Intel Core i5-9400 @ 2.90GHzThis CPU9,350 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

02AMD Ryzen 5 40AMD2,478 points
03Intel Core i5-9400 @ 2.90GHzThis CPU2,412 points
04AMD Ryzen 5 2500XAMD2,317 points

Performance per watt

Estimated as CPU Mark divided by TDP.

01AMD Ryzen 5 40AMD624.7 Mark/W
02AMD Ryzen 5 2500XAMD144.0 Mark/W
03Intel Core i5-9400 @ 2.90GHzThis CPU143.8 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
131,629.00
Data EncryptionMBytes/Sec
2,890.00
Extended InstructionsMillion Matrices/Sec
11,660.00
Find Prime NumbersMillion Primes/Sec
36.00
Floating Point MathMOps/Sec
22,622.00
Integer MathMOps/Sec
26,249.00
PhysicsFrames/Sec
618.00
Random String SortingThousand Strings/Sec
16,234.00

Core specifications

BrandIntel
CategoryDesktop
Release year2019
SocketLGA1151-2
Cores / threads6 / 6
Base clock2.90 GHz
Max turbo4.10 GHz
TDP65 W
Integrated graphicsIntel UHD Graphics 630

Memory support

DDR4
Memory typeDDR4
Official speedDDR4-2666
Maximum capacity128 GB

Cache hierarchy

L1I6 x 32 KB
L1D6 x 32 KB
L26 x 256 KB
L39 MB