TEST
YOUR CPU
ADD TO PC
BUILD

Intel BX80684I58400

Core i5-8400

▲ 625,353 ▼

6 Cores, 6 Threads @2.8GHz, Coffee Lake.
Release date: Q4 2017.

Average Bench: 81.8% (222nd of 1459)

Based on 312,220 user benchmarks.  Device: BFEBFBFF000906EA Model: Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz

The i5-8400 is a competitively priced hex-core processor from Intel’s 8th generation of Core processors (Coffee Lake). Along with the release of the unlocked i5-8600K, this is the first time that six-core processors have featured in the i5 line-up. Like the other Coffee Lake processors, the i5-8400 is based upon an improved version of Intel’s 14nm architecture which featured in both Skylake and Kaby Lake. Early benchmarks reveal that for average quad core usage (most games employ a maximum of four cores) the i5-8400 performs way above its pay grade. It achieves quad core mixed speeds close to Intel’s outgoing 2017 flagship the $300, quad-core, 8 thread i7-7700k, which to date has been a strong favourite for high-end gaming setups. On paper, the i5-8400 has a base clock of 2.8 GHz (Intel are significantly downplaying the performance of this SKU by giving it a relatively low nominal base clock), an all core boost of 3.8 GHz (this is the effective base clock figure that counts) and a single core boost of 4 GHz. This compares reasonably well to the i5-8600K which has a base clock of 3.6 GHz, all core boost of 4.1 GHz and a single core boost of 4.3 GHz. The i5-8400 also features 9MB of L3 cache and an energy-thrifty TDP of 65W. Priced at under $190, the i5-8400 offers fantastic value for money. Unfortunately, like the other Coffee Lake processors, the i5-8400 will require a new 300 series motherboard, and at the time of writing, the only available version is Intel’s high-end Z370 which isn't an ideal pairing for the i5-8400. The Z series motherboards are designed to cater for the unlocked and overclockable "K" SKUs. Cheaper 300 series motherboards will be available in 2018 at which time the 8400 will offer even better value for money. [Oct '17 CPUPro]

Poor: 61%Average: 81.8% Great: 89%
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser

Popular builds with this CPU

Very good average bench

The Intel Core i5-8400 averaged just 18.2% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Intel Core i5-8400 near the top of the comparison list.

Strengths

Avg. Memory Latency 84.9Pts
Avg. Quad Core Speed 434Pts

Good consistency

The range of scores (95th - 5th percentile) for the Intel Core i5-8400 is 28.4%. This is a relatively narrow range which indicates that the Intel Core i5-8400 performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Multi Core Speed 588Pts
Avg. Octa Core Speed 564Pts
ADVERTISEMENT

Average Bench

(Based on 312,220 samples)
Rank 22281.8%
Min Avg Max
61.4 Memory 84.9 94.2
89.4 1-Core 113 120
181 2-Core 224 237
79.3% 141 Pts
Min Avg Max
321 4-Core 434 471
386 8-Core 564 657
63.6% 499 Pts
Min Avg Max
420 64-Core 588 675
36.4% 588 Pts
User Benchmarks BenchNormalHeavyServer
The fastest CPU (mainstream) averages a speed of 100%
CPUSocket, 1 CPU, 6 cores, 6 threads
Base clock 2.8 GHz, turbo 3.8 GHz (avg)
89.2% Excellent
Memory 91.4
1-Core 119
2-Core 237
84% 149 Pts
4-Core 469
8-Core 674
72% 572 Pts
64-Core 678
42% 678 Pts
U3E1, 1 CPU, 6 cores, 6 threads
Base clock 2.8 GHz, turbo 3.8 GHz (avg)
88.3% Excellent
Memory 90.3
1-Core 117
2-Core 234
83% 147 Pts
4-Core 466
8-Core 663
71% 564 Pts
64-Core 659
41% 659 Pts
U3E1, 1 CPU, 6 cores, 6 threads
Base clock 2.8 GHz, turbo 3.8 GHz (avg)
85.2% Excellent
Memory 83.3
1-Core 120
2-Core 241
82% 148 Pts
4-Core 469
8-Core 699
73% 584 Pts
64-Core 700
43% 700 Pts
U3E1, 1 CPU, 6 cores, 6 threads
Base clock 2.8 GHz, turbo 3.8 GHz (avg)
79.3% Very good
Memory 78.5
1-Core 115
2-Core 228
78% 141 Pts
4-Core 448
8-Core 534
64% 491 Pts
64-Core 493
30% 493 Pts
312,220 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 68,304,138 CPUs tested

 Prices

If you buy via one of these links, our site may earn a commission

MSRP ≈ $200 @ launch in Oct '17
AmazonUS $9524 mins
EbayUS $1637 mins
BHPhotoUS $1723 years
Send price feedback
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical Core i5-8400 Builds (Compare 5,345 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 47%
Yacht
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 40%
Speed boat

Motherboard: MSI B360M BAZOOKA (MS-7B24)

CPU
Core i5-8400Intel  $95Bench 82%, 312,220 samples2,308x
GPU
RX 580AMD  $130Bench 52%, 360,351 samples804x
GTX 1060-3GBNvidia  $119Bench 52%, 627,793 samples611x
RTX 2060Nvidia  $234Bench 90%, 645,160 samples406x
SSD
Green 120GB (2018)WD  $39Bench 43%, 69,933 samples196x
Green 240GB (2018)WD  $49Bench 45%, 156,194 samples167x
860 Evo 500GBSamsung  $80Bench 105%, 762,998 samples99x
RAM
M378A1K43CB2-CTD 2x8GBSamsungBench 80%, 29,586 samples236x
DDR4 2400 2OZ 1x8GBUnknownBench 40%, 8,909 samples193x
Vengeance LPX DDR4 2666 C16 2x8GBCorsair  $40Bench 77%, 131,007 samples137x
EDIT WITH CUSTOM PC BUILDER Value: 87% - Excellent Total price: $264

Popular Core i5-8400 compatible motherboards:

How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute

Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

UserBenchmark of the month

Gaming Desktop ProGaming

How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware
Processor Rankings (Price vs Performance) July 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

ADVERTISEMENT

Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Specifications

Essentials

DescriptionIntel® Core™ i5-8400 Processor (9M Cache, up to 4.00 GHz)
Code NameCoffee Lake
Launch DateQ4'17
Processor Numberi5-8400
# of Cores6
# of Threads6
Cache9 MB
Instruction Set64-bit
Instruction Set ExtensionsSSE4.1/4.2, AVX2
Embedded Options AvailableNo
Lithography14 nm
Recommended PriceN/A
Clock Speed2.80 GHz
Max Turbo Frequency4.00 GHz
Bus Speed8 GT/s DMI3
Scalability1S Only
Max TDP65 W
Thermal Solution SpecificationPCG 2015C (65W)

Graphics

Processor GraphicsIntel® UHD Graphics 630
Graphics Base Frequency350 MHz
# of Displays Supported3
Graphics Max Dynamic Frequency1.05 GHz
Quick Sync VideoYes
InTru 3D TechYes
Clear Video HD TechYes
Clear Video Tech for MIDYes
Graphics Video Max Memory64 GB

Memory

Max Memory Size64 GB
Memory TypesDDR4-2666
Memory Channels2
ECC Memory SupportedNo

Expansion Options

PCI Express Revision3.0
PCI Express ConfigurationsUp to 1x16 or 2x8 or 1x8+2x4
Max # of PCI Express Lanes16

Data Protection

AES New InstructionsYes
Secure KeyYes

Advanced Technologies

Virtualization Tech (VT-x)Yes
Intel 64Yes
Idle StatesYes
Enhanced Intel SpeedStep® TechYes
Thermal Monitoring TechnologiesYes
Turbo Boost Tech2.0
Hyper-Threading TechNo
Virtualization for Directed I/O (VT-d)Yes
VT-x with Extended Page Tables (EPT)Yes
TSX-NINo
vPro TechNo
Identity Protection TechYes
Stable Image Platform Program (SIPP)No

Package

Package Size37.5mm x 37.5mm
Max CPU Configuration1

Platform Protection

Execute Disable BitYes
OS GuardYes
Trusted Execution TechNo

 Comments

CPUPro
Avatar level
2,080

Official site ark.intel.com/...

8th generation Coffee Lake processor...

Added 6 years ago.
USA-User
Avatar level
9,918

Excellent (edit your comment) Add link

21 days ago.

so good i tried before 5years it was so strong and powerful i got it in 4k games very good with GTX 1080Ti

GBR-User
Avatar level
5,828

Terrible

22 days ago.

it works on star powerful games quite well

ESP-User
Avatar level
3,765

Excellent

3 months ago.

better deals with ryzen cpu´s

CZE-User
Avatar level
3,366

Good

6 months ago.

Pretty fine for basic FHD, high textures loadout gaming :)

ARG-User
Avatar level
3,258

Good

3 days ago.

It performs great with everything

COL-User
Avatar level
2,996

Good

2 years ago.

good performance with multiple tasks

BGR-User
Avatar level
2,916

Terrible

17 months ago.

It's the best Intel performer for the money, also it's definitely doing a decent job as a gaming and also as video editing/rendering CPU.

SRB-User
Avatar level
2,820

Good

5 months ago.

Great value for money. No bottleneck in current game titles

FIN-User
Avatar level
2,562

Average

2 months ago.

i have this i5 but idont have good cs:go fps but that was better than i7 6700

BEL-User
Avatar level
2,556

Excellent

2 years ago.

Bang for your buck performance!

ISR-User
Avatar level
2,366

Good

7 months ago.

having a realy hard time in 2021 games.

CPUPro
Avatar level
2,080

Good

6 years ago.

CYP-User
Avatar level
1,364

Poor

2 years ago.

when gaming cpu is at 80% average....on the other side ryzen 5 2600 has 30% average

ColdSpy
Avatar level
330

Excellent

4 years ago.

Decent gaming performance back when Coffee Lake was released. Was my all time favorite CPU as this CPU comes with 6 core and 6 thread at 2.8GHz base clock and 4.0GHz boost clock which is decent enough for every users.

rai7
Avatar level
42

Good

5 years ago.

i dont get why people dont talk about this cpu as much, looks worth the money

moonhi123
Avatar level
42

Poor

5 years ago.

너무 비싸

ProshotJake
Avatar level
28

Good

4 years ago.

I was able to buy this cpu at a heavy discount off a friend who upgraded, this chip surprised me with how well it preformed!

Promaxinjer
Avatar level
20

Excellent

6 years ago.

This cpu is great with that price and six core perfomance

Wheejo2077
Avatar level
8

Excellent

6 years ago.

It's very very decent cpu I've bought. Love it!

SovietMicrowave
Avatar level
8

Good

2 years ago.

i ocerclocked to 3.5GHz and its working great

HRCMrPink
Avatar level
6

Excellent

4 years ago.

Love it. Great CPU

Calixen
Avatar level
4

Good

6 years ago.

Great budget CPU, in terms of quality and price, this is great to use and have, even if you plan to upgrade later, this could be the last thing to upgrade

walid_ceza
Avatar level
4

Excellent

3 years ago.

still worth it at 2020 ,

Wenez
Avatar level
2

Excellent

6 years ago.

Nice 6 cores for good price.

brando7mm
Avatar level
2

Excellent

6 years ago.

PUBG 80 FPS ULTRA Using 40 ~60 % CPU And my 1070 at 98~100% hehehe Monster CPU

fosterrf
Avatar level
2

Good

5 years ago.

Good value, good combination of single/multi-core performance. Latest Intel chipset provides path for future upgrades.

FireAndRice
Avatar level
2

Excellent

5 years ago.

Bang for buck with games.

mendacity
Avatar level
2

Excellent

5 years ago.

It cheap and will give you opportunity to get higher level

vaappu79
Avatar level
2

Excellent

5 years ago.

Can "overclock" it oldschool by raising bclk. Asus ROG strix z370f motherboard. 4.15Ghz is maximum though.

Tom88Cz1
Avatar level
2

Good

3 years ago.

I had Intel Core2 Duo E7200 and this is my upgrade

Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 6 years

Speed Comparisons

vs Intel Core i5-12600K
vs Intel Core i5-12400F
vs Intel Core i5-13600K
vs Intel Core i7-14700K
vs AMD Ryzen 5 5600X
vs Intel Core i3-13100F
vs Intel Core i7-13700K
vs Intel Core i5-12400
vs AMD Ryzen 5 3600

1459 Processors (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different CPUs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

Processors FAQ
AMD vs Intel: Gaming performance 2012-2021
How does IPC compare between AMD's Ryzen and Intel's Kaby Lake?
What is multi core mixed speed?
What is multi core integer speed?
What is multi core floating point speed?
What is single core mixed CPU speed?
What is quad core mixed CPU speed?
What is quad core floating point speed?
What is quad core integer speed?
What is single core floating point speed?
What is single core integer speed?
What is the GeekBench single core score?
What is a CPU?
What is the effective CPU speed index?
What is overclocking?
What is thermal design power (TDP)?
ALL FAQs »

 Best User Rated
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark popular with users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $175Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $145
Intel Core i5-12400F $110Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $85
Intel Core i5-13600K $235Nvidia RTX 4070 $499Crucial T700 M.2 4TB $342
Today's hottest
Amazon Ebay
deals
If you buy something via a price link, UserBenchmark may earn a commission
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback