Compare Processors: Intel Core i9-9900K vs Core i5-8400

Intel Core i9-9900K

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Intel Core i5-8400

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Price
$509.99
Prime Eligible Item
$184.99
Prime Eligible Item
Availability Out of Stock In Stock
Pangoly Score - -
Brand Intel Intel
Model BX80684I99900K BX80684I58400
Release Date October 2018 October 2017
Performance
(Charts)
5th
42nd
Effective Value
45th
8th
TDP 95 Watts 65 Watts
Price history
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Suggested PC builds
Pro
Pros - -
Cons - -
Series Core i9 9th Gen Core i5 8th Gen
Core Name Coffee Lake Coffee Lake
Socket LGA1151 LGA1151
Integrated Graphics Intel UHD Graphics 630 Intel UHD Graphics 630
CPU Cores 8 6
CPU Threads 16 6
CPU Clock Rate 3600MHz 2800MHz
CPU Turbo Clock Rate 5000MHz 4000MHz
CPU Cooler included No Yes
Manufacturing Process 14 nm 14 nm
Maximum Supported Memory 64GB 64GB
Cache L3 2.00MB 9.00MB
Critic Reviews

"Intel might be late to the game with its first mainstream octa-core processor, but the Intel Core i9-9900K is an impressive debut. The Intel Core i9-9900K's incredible increase in processing power can't be understated, and this CPU will be a boon to any..."

"Anyone looking to buy a completely new desktop PC today should avoid previous-generation Intel CPUs simply because you get more physical cores at all price levels with 8th Gen Core models as well as AMD's entire Ryzen lineup. The Core i5-8400 is an..."

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Compare Processors: Intel Core i9-9900K vs Core i5-8400. Analyze head-to-head all specifications and features to find out the better CPU.

Comparison summary

Reasons to pick the Intel Core i9-9900K:

  • Much better average performance, around 34%.
  • Newer Product, it was released around 12 months later.
  • 2 more cores.
  • 10 more threads.
  • Higher CPU Clock Frequency (+800MHz).
  • Higher Max Turbo Clock Frequency (+1000MHz).

Reasons to pick the Intel Core i5-8400:

  • 64% cheaper, you can save $325.00.
  • Slightly better effective value.
  • Around 32% lower thermal design power.
  • Includes CPU Cooler.
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