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Expert Reviews (14) The following reviews are from your region. The average score is calculated from international review scores.

  • Good: Incredible value, Six Cores, Strong performance in games and applications, Price, Bundled cooler

    Bad: No BSeries motherboards at launch, Poor availability, Locked ratio multiplier

    The Core i5-8400 brings a powerful six-core design to the mid-range, offering class-leading gaming performance and competitive performance in heavier applications. More expensive models offer more performance in both categories, but the Core i5-8400 i...

  • Intel's i5-8400 CPU doesn't seem to want to stick at a fixed price – we've seen it bounce up and down with launch, though not as violently as the i7-8700K (which is gouged beyond belief at some retailers, like Microcenter). The i5-8400 has bounced about +...

  • 10 0
    9

    Date: 10/13/2017

    Good: Intel's best value chip. Great for gamers across the board, decent at productivity, thermals in line with a 7700K

    Bad: Intel's B360 motherboards won't be available until 2018 and the cost of Z370 boards strains the value of this offer

    Today we're checking out the most affordable six-core processor ever released, and this time it's not from AMD. With an MSRP of $182, the Core i5-8400 is even more affordable than the $215 Ryzen 5 1600, though it can't be overclocked and lacks HyperThread...

  • 10 0
    9

    Date: 10/6/2017

    Good: Great price/performance ratio, Six full cores, No need for aftermarket cooling

    Bad: No real overclocking potential, No HyperThreading (SMT, Needs a new mobo

    Core i5-Even with a locked multiplier, the i5- delivers awesome performance, for under $0.See commentsLoad Comments...

  • Whether or not we have to thank AMD for Intel's quick turnaround on the availability of six-core consumer-grade CPUs we will never know for sure. However, it became very clear to us that the Core i7-8700K hits the sweet spot of multi-core performance almo...

  • Good: 6 cores in a Core i5, Great performance, Very competitive against Ryzen 5 parts, Price, Lower TDP and operating temperatures

    Bad: No HyperThreading, No Overclocking

    The Core i5-8400 is a rather interesting part, and one that many people might overlook, but they really shouldn't. If you read my Core i7-8700K review you know I said it was about time we had a 6-core Core i7 chip, but we also have a 6-core Core i5's! Tha...

  • Early in 2017, Intel released their brand new Kaby Lake platform, featuring a plethora of CPUs and motherboards. The Kaby Lake platform introduced nothing new over what Skylake and its boards already offered. It was simply part of Intel's yearly refresh a...

  • 10 0
    9

    Date: 10/5/2017

    Good: Strong Multi-Thread Performance, Killer Single-Thread Performance, Relatively Low Power, High Overclocks

    Bad: Requires New Motherboards, Despite Using LGA1151 Socket, Not All Unlocked

    Intel Core i7-8700K And Core i5-8400 Processors -- Find Them At AmazonAlthough they are not based on a totally new architecture, the design choices Intel made with Coffee Lake and its 8th Generation Core processors completely re-shape the company's mainst...

  • 10 0
    8.4

    Date: 10/5/2017

    Good: Most affordable 6-core in the Coffee Lake lineup, Large multi-threaded gains over the previous generation, Intel stock cooler included in the box

    Bad: Multiplier locked, Manual overclocking yields limited gains, New motherboard required, Lacks HyperThreading, Only Z370 motherboards available at launch; increases platform cost, Relatively low all-core clock frequency

    The Intel Core i5-8400 retails for $190. Most affordable 6-core in the Coffee Lake lineup Large multi-threaded gains over the previous generation Intel stock cooler included in the box Multiplier locked Manual overclocking yields limited gains New mot...

  • 10 0
    8

    Date: 10/5/2017

    Good: Often bests previous-generation Core i7-7700K flagship CPU on multi-core tests, Best-in-class gaming performance, when paired with a dedicated graphics card

    Bad: Not unlocked for overclocking (though i5 K-version does exist), Requires a new motherboard, despite Z370 chipset offering no substantive new features

    Intel's six-core "Coffee Lake" Core i5 trades blows with much pricier previous-generation Core i7 chips. But it's most impressive as an affordable high-end CPU for gamers when paired with a dedicated graphics card. Read More...

  • The Intel Core i7-8700K was an exciting processor to benchmark and overclock as Coffee Lake drastically improves performance at a minimal price increase. For $20 more than a 4-core, 8-thread Core i7-7700K Kaby Lake processor you can now get a 6-core, 12-t...

  • The performance story surrounding the 8th Generation Intel Core processors codenamed Coffee Lake is straightforward. Take the Kaby Lake parts that were already damned good, increase the core count in Core i7, Core i5, and Core i3 families, and also increa...

  • Today marks the embargo expiry for reviews on Intel's new Coffeelake desktop processors. While a CPU refresh may not normally be too exciting, thanks to the pressure from AMD with their Ryzen processors pushing core counts higher, Intel is now upping the...

  • This CPU was a bit interesting to test due to its performance level. When compared with mainstream CPU's of the last few generations, it just mopped the floor with all of them. With many of our benchmarks placing this CPU in line with High-End Desktop CPU...

Where to Buy (2)

  • Intel® Core™ ® ™ i5-8400 Processor (9M Cache, up to 4.00 GHz) 2.8GHz 9MB Smart Cache Box processor*

    B&H Photo Video

  • Intel® Core™ ® ™ i5-8400 Processor (9M Cache, up to 4.00 GHz) 2.8GHz 9MB Smart Cache Box processor*

    Microcenter

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Technical Specifications

Processor

  • i5-8400 processor
  • Y
  • 8th gen Intel® Core™ i5
  • 2.8 GHz
  • 6
  • LGA 1151 (Socket H4)
  • 9 MB
  • 14 nm
  • 65 W

Graphics

  • Y
  • Intel UHD Graphics 630
  • 350 MHz
  • 1050 MHz

Intel Technologies

  • 2.0

    Higher Performance When You Need It Most
    Intel® Turbo Boost Technology 2.01 accelerates processor and graphics performance by increasing the operating frequency when operating below specification limits. The maximum frequency varies depending on workload, hardware, software, and overall system configuration.

  • N
  • Y
  • Y

    Create, Edit, and Share Video in a Flash
    Intel® Quick Sync Video uses the dedicated media processing capabilities of Intel® Graphics Technology to make video encoding tasks—such as creating DVDs or Blu-ray discs, creating and editing 3D videos, converting 2D video files into 3D, and converting video for portable media players and social networking sites—faster and easier.

  • Y

    Protect Your Identity and Business
    Intel® Identity Protection Technology (Intel® IPT) protects enterprises from being penetrated by stolen credentials and online user account access with an added layer of hardware-based security and authentication as well as a multifactor authentication framework to manage different authentication methods.

  • N
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