COMPARE
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
Intel
IntelBX80684I58400
▲ 52177 ▼

4 Cores, 4 Threads @3 GHz, Haswell.
Release date ≈ Q3 2014.

VS
▲ 615,299 ▼

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

Effective Speed 
+22%
Real World Speed
Performance profile from 323,818 user samples
Benchmark your CPU here
11,598 User Benchmarks
Best Bench: 76% Base clock 3 GHz, turbo 3.35 GHz (avg)
Worst Bench: 49% Base clock 3 GHz, turbo 3.2 GHz (avg)
Poor: 49% Great: 76%
SPEED RANK: 457th / 1442
Gaming
Gaming 67%
Battle cruiser
Desktop
Desktop 71%
Battleship
Workstation
Workstation 50%
Yacht
312,220 User Benchmarks
Best Bench: 89% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 61% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 61% Great: 89%
SPEED RANK: 212th / 1442
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
Effective Speed
Effective CPU Speed 		67.1 % 81.8 % Faster effective speed.
+22%
Average Score 
+33%
Memory
Avg. Memory Latency 		79.1 Pts 84.9 Pts Slightly lower memory latency.
+7%
1-Core
Avg. Single Core Speed 		91.1 Pts 113 Pts Faster single-core speed.
+24%
2-Core
Avg. Dual Core Speed 		178 Pts 224 Pts Faster dual-core speed.
+26%
4-Core
Avg. Quad Core Speed 		319 Pts 434 Pts Much faster quad-core speed.
+36%
8-Core
Avg. Octa Core Speed 		328 Pts 564 Pts Much faster octa-core speed.
+72%
Overclocked Score 
+28%
Memory
OC Memory Latency 		91.2 Pts 94.2 Pts +3%
1-Core
OC Single Core Speed 		104 Pts 120 Pts Faster OC single-core speed.
+15%
2-Core
OC Dual Core Speed 		197 Pts 237 Pts Faster OC dual-core speed.
+20%
4-Core
OC Quad Core Speed 		374 Pts 471 Pts Faster OC quad-core speed.
+26%
8-Core
OC Octa Core Speed 		374 Pts 657 Pts Much faster OC octa-core speed.
+76%
Value & Sentiment 
+565%
Market Share
Based on 67,699,025 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.04 % 0.95 % Insanely higher market share.
+2,275%
Value
Value For Money 		94.9 % 101 % Slightly better value.
+6%
User Rating
UBM User Rating 		52 % 61 % More popular.
+17%
Price
Price (score) 		$79 Much cheaper.
+40% 		$131
Nice To Haves 
+64%
Age
Newest 		115+ Months 78 Months Much more recent.
+32%
64-Core
OC Multi Core Speed 		374 Pts 675 Pts Hugely faster OC 64-core speed.
+80%
64-Core
Avg. Multi Core Speed 		329 Pts 588 Pts Much faster 64-core speed.
+79%
Specifications 
Launch Date
Launch Date 		Q2'14 Q4'17
Cache
Cache 		6 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Embedded Options Available
Embedded Options Available 		Yes No
Lithography
Lithography 		22 nm 14 nm
Recommended Price
Recommended Customer Price 		$192.00 - $202.00 N/A
Max Turbo Frequency
Max Turbo Frequency 		3.7 GHz 4.00 GHz
Bus Speed
Bus Speed 		5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification 		PCG 2013C PCG 2015C (65W)
Max Memory Size
Max Memory Size (dependent on memory type) 		32 GB 64 GB
Memory Types
Memory Types 		DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V DDR4-2666
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics 4600 Intel® UHD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.15 GHz 1.05 GHz
Graphics Video Max Memory
Graphics Video Max Memory 		2 GB 64 GB
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 Revision
PCI Express Revision 		Up to 3.0 3.0
PCI Express Configurations
PCI Express Configurations ‡ 		Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
Conclusion 
Average Bench 67.1%
Average Bench 81.8%
ADVERTISEMENT

I love it! My little Dell optiplex 9020 with him have consumption 20W :) [Dec '20 djtonda]

MORE DETAILS

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

User Builds 
11,598
312,220
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Processor Rankings (Price vs Performance) April 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. 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 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 value for money upgrades.

UserBenchmark of the month

Gaming Desktop ProGaming

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
  • - SkillBench (space shooter) tests user input accuracy
  • - 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

 Frequently Asked Questions

Processors FAQ
AMD vs Intel: Gaming performance 2012-2021
How does IPC compare between AMD's Ryzen and Intel's Kaby Lake?
What is multi core mixed speed?
What is multi core integer speed?
What is multi core floating point speed?
What is single core mixed CPU speed?
What is quad core mixed CPU speed?
What is quad core floating point speed?
What is quad core integer speed?
What is single core floating point speed?
What is single core integer speed?
What is the GeekBench single core score?
What is a CPU?
What is the effective CPU speed index?
What is overclocking?
What is thermal design power (TDP)?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $186Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback