Price drop 10%

Intel Core i5 8400 6-core LGA1151

★★★★★ 4.7 (3,278)

The 6-core, 6-thread Coffee Lake architecture with a 4.0GHz boost clock delivers strong multi-threaded efficiency for its 65W TDP class. It includes a boxed cooler and integrated UHD Graphics 630, making it a cost-effective foundation for a basic system without a discrete GPU. This processor is best for office productivity users and home theater PC builders who need reliable, moderate performance on a tight budget.

Cores 6
Threads 6
Boost Clock 4000 MHz
L3 Cache 9 MB
TDP 65 W
Socket LGA 1151
Integrated Graphics Intel UHD Graphics 630
Intel Core i5 8400 6-core LGA1151 cpu
60 Overall Score
Also available in:

Snapshot

Pros & Cons

Pros

  • Strong social proof (91st percentile) 91st
  • Strong platform (68th percentile) 68th
  • Strong efficiency (66th percentile) 66th
  • Strong single thread (66th percentile) 66th

Cons

What owners think

How owner sentiment changed over time

Exclusive

Based on when customers actually wrote their reviews - so you can see whether early praise held up.

Owner sentiment has held steady over time
85/100Our AI sentiment readmedium confidence · 26 sources · Jun 2026
1★2★3★4★5★Q1 '18: 4.7★ · 3 reviewsQ2 '18: 5.0★ · 2 reviewsQ1 '19: 5.0★ · 1 review321Q1 '18Q2 '18Q1 '19
Avg ratingHappy (4-5★)Unhappy (1-2★)Bar height = number of reviews

Based on 6 dated customer reviews, grouped by calendar quarter. Period analysis is in English.

The proof

Performance

Performance Percentiles

AI 62.8
Feature 54.4
Platform 68.3
User Sentiment 64
Efficiency 66.4
Multi Thread 60
Social Proof 90.7
Single Thread 66.4

Specifications

Full Specifications

Processor

Brand Intel
Series Core i5
Model 8400
Codename Coffee Lake
Class desktop
Process 14

Cores & Clocks

Cores 6
Threads 6
Base Clock 2800
Boost Clock 4000

Cache

L2 Cache 1.5
L3 Cache 9 MB

Performance

PassMark Multi 9232
PassMark Single 2365

Memory

Memory Type DDR4
Max Speed 2666
Channels 2
Max Memory 128
ECC No

Platform & Power

Socket LGA 1151
PCIe 3
PCIe Lanes 16
TDP 65
Max Turbo Power 65
Unlocked No

Graphics & AI

Integrated Graphics Intel UHD Graphics 630

vs Competition

Spec Intel Core i5 8400 AMD Ryzen 7 9800X3D SMC EPYC 9555P Dell Inspiron 7700 WowWee Xeon Gold 5120 HP Celeron 14-dq3000dx
Cores 6 8 64 10 14 2
Threads 6 16 128 12 28 2
Boost Clock Mhz 4000 5200 4400 4700 3200 2800
L3 Cache Mb 9 96 256 12 19.25 4
Tdp W 65 120 360 15 105 6
Socket LGA 1151 AM5 AMD Socket SP5 Intel BGA 1744 LGA 3647 Intel BGA 1338
Integrated Graphics Intel UHD Graphics 630 AMD Radeon Graphics - Iris Xe 96EU - Intel UHD Graphics
Compare Compare Compare Compare Compare
Product AIFeaturePlatformUser SentimentEfficiencyMulti ThreadSocial ProofSingle Thread
Intel Core i5 8400 62.854.468.36466.46090.766.4
AMD Ryzen 7 9800X3D Compare 91.298.495.192.687.59096.595.6
SMC EPYC 9555P Compare 99.376.896.7090.699.51.588.7
Dell Inspiron 7700 Compare 62.369.470.8099.466.427.482
WowWee Xeon Gold 5120 Compare 73.720.117.5072.674.338.344.2
HP Celeron 14-dq3000dx Compare 17.254.454.403210.99.130.2

Price

Value & Pricing

From ¥25,241 1 offer across 1 retailer
Amazon 1 offer From ¥25,241

Price History

¥25,200 ¥25,210 ¥25,220 ¥25,230 ¥25,240 ¥25,250 Jun 13Nov 1 ¥25,241

Usage Scores

Overall (59.8)AI/LLM (48.5)Budget (64)Gaming (53.1)Server (47.2)Efficiency (62.5)Productivity (59.8)

A full written review is coming soon. The specs, scores, prices and charts above are always up to date.

Other Configurations1

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