IntelBX80684I58400
Intel

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

VS
About

2 Cores, 4 Threads @3.4 GHz, Sandy Bridge.
Release date ≤ Q4 2013.

Real World Speed
Performance profile from 119,709 user samples
115,832 User Benchmarks
Best Bench: 84% Base clock 2.8 GHz, turbo 3.85 GHz (avg)
Worst Bench: 66% Base clock 2.8 GHz, turbo 2.1 GHz (avg)
Poor: 66% Great: 84%
SPEED RANK: 51st / 1184
Gaming
Gaming 79%
Battleship
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 56%
Gunboat
3,877 User Benchmarks
Best Bench: 38% Base clock 3.4 GHz, turbo 3.4 GHz (avg)
Worst Bench: 25% Base clock 3.4 GHz, turbo 0.75 GHz (avg)
Poor: 25% Great: 38%
SPEED RANK: 462nd / 1184
Gaming
Gaming 35%
Jet ski
Desktop
Desktop 51%
Yacht
Workstation
Workstation 22%
Surfboard
Effective Speed
Effective CPU Speed
78.8 % Hugely faster effective speed.
+125%
35.1 %
1-Core
Avg. Single Core Mixed Speed
116 Pts Much faster single-core speed.
+40%
82.6 Pts
2-Core
Avg. Dual Core Mixed Speed
230 Pts Much faster dual-core speed.
+60%
144 Pts
4-Core
Avg. Quad Core Mixed Speed
449 Pts Hugely faster quad-core speed.
+115%
209 Pts
8-Core
Avg. Octa Core Mixed Speed
638 Pts Hugely faster octa-core speed.
+200%
213 Pts
64-Core
Avg. Multi Core Mixed Speed
647 Pts Hugely faster 64-core speed.
+201%
215 Pts
1-Core
OC Single Core Mixed Speed
122 Pts Much faster OC single-core speed.
+36%
89.6 Pts
2-Core
OC Dual Core Mixed Speed
242 Pts Much faster OC dual-core speed.
+41%
172 Pts
4-Core
OC Quad Core Mixed Speed
477 Pts Hugely faster OC quad-core speed.
+107%
230 Pts
8-Core
OC Octa Core Mixed Speed
694 Pts Hugely faster OC octa-core speed.
+202%
230 Pts
64-Core
OC Multi Core Mixed Speed
697 Pts Hugely faster OC 64-core speed.
+202%
231 Pts
Market Share
Based on 21,153,564 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.01 % Insanely higher market share.
+2,425%
0.04 %
Value
Value For Money
88.4 % Hugely better value.
+93%
45.8 %
User Rating
UBM User Rating
68 % More popular.
+26%
54 %
Price
Price (score)
$183 $105 Much cheaper.
+43%
Age
Newest
24 Months Much more recent.
+66%
70+ Months
Launch Date
Launch Date
Q4'17 Q3'11
Cache
Cache
9 MB 3 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX
Lithography
Lithography
14 nm 32 nm
Recommended Price
Recommended Customer Price
N/A $117.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2666 DDR3 1066/1333
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 2000
Graphics Base Frequency
Graphics Base Frequency
350 MHz 850 MHz
# of Displays Supported
# of Displays Supported ‡
3 2
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.1 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Yes No
AES New Instructions
Intel® AES New Instructions
Yes No
PCI Express Revision
PCI Express Revision
3.0 2.0

More specs » More specs »
ADVERTISEMENT

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) October 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]

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.
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.

UserBenchmark of the month

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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-9400F $145Nvidia GTX 1660 $210Samsung 850 Evo 250GB $57
Intel Core i5-9600K $240Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $107
Intel Core i7-9700K $350Nvidia RTX 2060 $320Samsung 850 Pro 256GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $76SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $78G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $83SanDisk Ultra Fit 32GB $14
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback