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Intel Core i5 8400 2.8GHz 6 Core (Socket 1151) CPU

CCL Code: CPU0508
Manufacturer Code: BX80684I58400
Manufacturer: Intel
Intel Core i5 8400 2.8GHz 6 Core (Socket 1151) CPU

Key Features:

  • Base: 2.8GHz, Turbo: 4.0GHz
  • 6 Cores, 6 Threads
  • Socket 1151
  • Intel UHD 630
  • Heatsink & Fan Included

Delivery Options

Tuesday 2nd February via Priority DPD

Free Delivery by Monday 8th February

Collection Options

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Tuesday 2nd February from Local Collection Point

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Don’t let the fact this is the entry Intel® Coffee Lake Core i5 fool you - this processor is more than capable of bringing stunning performance system-wide at an extremely attractive price! Perfect for effortless home multitasking and an ample chip to compliment enthusiast-grade discrete graphics cards, you really can give Intel’s new i5 range an intense workload and they’ll complete it effortlessly with all the benefits of the 14nm lithography, such as efficient power draw and much better temperatures.

The new addition of an extra 2 cores over the Intel® Kaby Lake range is clearly noticeable, with strong multicore performance in intense workstation applications. Paired up with the vast array of new 8th Gen compatible chipset motherboards, you’re sure to find the best features you need to match with the stunning performance of the new Core i5 range. Outmatching the Kaby Lake i5 range in all categories, the Core i5-8400 really is one of the best bang-for-buck CPUs on the market right now.

Give your system a caffeine boost with Intel's 8th Gen Coffee Lake!

Intel’s newest architecture brings the latest and greatest features of the 14nm CPUs so far, with refinements on power draw and performance, Optane support and a core count jump for Intel’s CPUs across their range!

Guaranteed to bring your system best-in-class core performance, the new Coffee Lake range allows for usage in a variety of applications with ease. Along with this new architecture, Intel® has released a variety of new chipsets which harbour a wide range of motherboards designed to fit any budget and feature requirement!

Pick up your Coffee Lake chip today and look out for our CCL motherboard bundles for an even more streamlined experience!

Intel® Optane™ Support

It’s revolutionary – the first all-new class of memory in 25 years. Intel® Optane™ memory creates a bridge between the DRAM and storage to deliver an Intelligent, amazingly responsive computing experience.

  • For Work - By learning and remembering the way you work, Intel® Optane™ memory can accelerate the things that matter most to you; turning your unique computing habits into productivity advantages. With the new 8th Gen Intel® Core™ processors combined with Intel® Optane™ memory, your everyday work tasks will perform up to 2.2x faster.
  • For Creating - Intel® Optane™ memory in your PC delivers amazing responsiveness so you can start quickly, open large media files up to 3x faster and save with virtually no lag. With the new 8th Gen Intel® Core™ processors combined with Intel® Optane™ memory, you get the high-performance you need to work more efficiently and spend less time in front of your screen.
  • For Gaming - Introducing the new 8th Gen Intel® Core™ processors combined with Intel® Optane™ memory, which learns and accelerates your most played games. Be the first one ready on the field battling the rivals by loading the next level up to 4.7x faster and install all your games on a large capacity HDD and play them at SSD-like speed so you can play a new game without clearing up the fast storage space.

Intel® Turbo Boost Technology 2.0

Higher performance when you need it the most. Intel® Turbo Boost Technology 2.0 accelerates processor and graphics performance for peak loads, automatically allowing processor cores to run faster than the rated operating frequency if they’re operating below power, current, and temperature specification limits. Whether the processor enters into Intel® Turbo Boost Technology 2.0 and the amount of time the processor spends in that state depends on the workload and operating environment. This results in increased performance of both single and multithreaded applications.

Enhanced Intel® Speedstep Technology

Enhanced Intel® SpeedStep Technology (EIST) is a power and thermal management technology developed by Intel®. EIST was introduced as a means of enabling high performance while meeting the power-saving needs of a mobile computer system.

Essentially, EIST throttles the clock speed of a central processing unit (CPU) during periods requiring minimal demand. It then brings the clock speed back up to its maximum potential when demanded by the load. This allows a computer to save power when there is less to process, yet still achieve high performance when the demand is high.

Intel® Online Connect

Intel® Online Connect enables simple and secure fingerprint touch payments (additional hardware required) and adds a layer of protection for online accounts using hassle free, built-in two factor authentication. So, when you’re using online services, such as a login with Facebook, Google, Dropbox, and Dashlane, you have an easy way to protect your identity in addition to your username and password. Requiring two factors of authentication to enter your login details derails hackers, making it extremely difficult to access your account, even if your username and password are stolen. Because Intel® Online Connect is built-in and offers strong authentication with a mouse click, you don’t have to rely on an external USB device and wait for a security key or code on your phone.

Main Features

  • Intel Optane Memory Supported
  • Intel Turbo Boost Technology 2.0
  • Intel Virtualization Technology (VT-x)
  • Intel Virtualization Technology for Directed I/O (Intel VT-d)
  • Intel VT-x with Extended Page Tables (EPT)
  • Idle States
  • Enhanced Intel SpeedStep Technology
  • Thermal Monitoring Technologies
  • Intel Identity Protection Technology


CPU Type Intel Core i5
CPU Manufacturer Intel
CPU Cores Hexa Core
CPU Socket Socket 1151
CPU Brand Intel
Cache 9 MB
CPU Threads 6
Processor Turbo Speed 4 GHz
CPU Family Intel Core i5
Processor Number 8400
CPU Speed 2.8 GHz
L1 Cache 384 KB
L2 Cache 1.5 MB
L3 Cache 9 MB
Bus Speed 8 GT/s DMI
Architecture 64-bit
Technology 14nm
Socket LGA1151
CodeName Coffee Lake
Command Set Extensions SSE4.1/4.2, AVX 2.0
Package 1151-land Flip-Chip Land Grid Array
Number of Cores 6
Turbo Core Yes
Turbo Speed 4 GHz
Number of Threads 6


Graphics Chipset Intel UHD 630
IGP/APU Graphics Intel UHD 630
Graphics Base Frequency 350 MHz
Graphics Maximum Dynamic Frequency 1.05 GHz
Graphics Features Intel UHD Graphics 630
Integrated Graphics Yes
Dual Display Capable Yes


Maximum Memory Size 64 GB
Memory Types DDR4-2666
Number of Memory Channels 2


Thermal Spec 100 °C
TDP (Thermal Design Power) 65 W


Form Factor Processor
In The Box Processor
Stock Cooler with pre-applied TIM

Key Features

CPU Cooler Included Yes

Graphics Device

Graphics Chipset Intel UHD 630


Warranty 1 Year

Item Details

Manufacturer Intel
Manufacturer Code BX80684I58400
EAN 5032037108904
Condition New

Warranty Information

Warranty 1 Year

Manufacturer Information

Manufacturer Intel
Manufacturer Code BX80684I58400

Do you have you a question about the Intel Core i5-8400- 2.8GHz 6-Core, 6-Thread Processor for Socket 1151?

Q: Hi Iv got a Gigabyte H110M-S2H mother board. Will this CPU be ok to install? Kind regards Dave
Answer by Website User on 9th August 2019
No, you will need a 300 series chipset motherboard to support this CPU.
0 customers found this answer helpful.
Post Answer
Q: is this CPU will works with z390 motherboard which is support 8-th gen CPU-s ?
Answer by Website User on 19th February 2019
Yes this will work with z390 motherboards. - Kristian N
0 customers found this answer helpful.
Post Answer
4 / 5 11 reviews


4 months ago

Good product


8 months ago

Upgrade for my son pc build. Play all game on top setting.


January 2020

Very energy efficient CPU which runs at lows speed when under light load but has good performance when required. Needs very little cooling so with a third party fan ( Noctua ) it is practically silent. Probably not suitable for a games PC but ideal for everything else.

Michael Hurley

April 2019

quality seems good, good price cant tell if its really good as i am still building the new computer and its not running yet..

tony godward

March 2019

Great price and comes with it's own thermal paste so no messing about !


March 2019

Exactly what it says on the tin.


March 2019

Amazing price and all around good cpu!

Emma J

January 2019

Amazing price and amazing piece of kit

Keith - Actuary and Risk Assessor

January 2019

My son heard it was good and wanted one. I bought it and he says it is good.


October 2018

Great cpu, best on the market for a budget


October 2018

New Intel CPUs are pure beast. Better than my mates i7 from an older gen