IntelCM8066201920202
IntelBX80684I58400
  

4 Cores, 8 Threads @2.8 GHz, Skylake.
Release date ≈ Q4 2015.

VS
About

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

Real World Speed
Performance profile from 133,475 user samples
4,418 User Benchmarks
Best Bench: 72% Base clock 2.8 GHz, turbo 3.4 GHz (avg)
Worst Bench: 55% Base clock 2.8 GHz, turbo 3.4 GHz (avg)
Poor: 55% Great: 72%
SPEED RANK: 164th / 1186
Gaming
Gaming 65%
Destroyer
Desktop
Desktop 67%
Battle cruiser
Workstation
Workstation 45%
Speed boat
129,057 User Benchmarks
Best Bench: 84% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 69% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Poor: 69% Great: 84%
SPEED RANK: 60th / 1186
Gaming
Gaming 79%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 56%
Gunboat
Effective Speed
Effective CPU Speed
64.7 % 79.4 % Faster effective speed.
+23%
1-Core
Avg. Single Core Mixed Speed
100 Pts 116 Pts Faster single-core speed.
+16%
2-Core
Avg. Dual Core Mixed Speed
196 Pts 230 Pts Faster dual-core speed.
+17%
4-Core
Avg. Quad Core Mixed Speed
347 Pts 446 Pts Faster quad-core speed.
+29%
8-Core
Avg. Octa Core Mixed Speed
505 Pts 635 Pts Faster octa-core speed.
+26%
64-Core
Avg. Multi Core Mixed Speed
500 Pts 644 Pts Faster 64-core speed.
+29%
1-Core
OC Single Core Mixed Speed
110 Pts 122 Pts Slightly faster OC single-core speed.
+11%
2-Core
OC Dual Core Mixed Speed
214 Pts 242 Pts Slightly faster OC dual-core speed.
+13%
4-Core
OC Quad Core Mixed Speed
407 Pts 477 Pts Faster OC quad-core speed.
+17%
8-Core
OC Octa Core Mixed Speed
566 Pts 693 Pts Faster OC octa-core speed.
+22%
64-Core
OC Multi Core Mixed Speed
569 Pts 696 Pts Faster OC 64-core speed.
+22%
Market Share
Based on 21,658,940 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.02 % 0.98 % Insanely higher market share.
+4,800%
User Rating
UBM User Rating
52 % 73 % Much more popular.
+40%
Age
Newest
49+ Months 25 Months Much more recent.
+49%
Launch Date
Launch Date
Q3'15 Q4'17
Cache
Cache
8 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$303.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2015A (35W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® UHD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.1 GHz 1.05 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
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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]

MORE DETAILS

Processor Rankings (Price vs Performance) November 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. 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]

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

Welcome to our freeware 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 upgrades.

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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.
  • - 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.
  • - Share your opinion by voting.

 Frequently Asked Questions

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The Best.
CPUGPUSSD
Intel Core i5-9400F $148Nvidia GTX 1660 $210Crucial MX500 250GB $45
Intel Core i5-9600K $210Nvidia GTX 1660S (Super) $234Samsung 850 Evo 120GB $150
Intel Core i7-9700K $349Nvidia GTX 1660-Ti $260Samsung 860 Evo 250GB $49
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Ultra Fit 32GB $14
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