COMPARE
Today's hottest
Amazon Ebay
deals
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
IntelBX80684I59600KF
IntelBX80684I58400
▲ 824,332 ▼

6 Cores, 6 Threads @3.70 GHz, 95 W.
Release date ≈ Q2 2019.

VS
▲ 625,388 ▼

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

Game EFps  
+7%
CSGO
Dust 2 1080p Max 		280 EFps Better CSGO EFps.
+20% 		233 EFps
GTAV
Franklin & Lamar 1080p Max 		110 EFps +3% 107 EFps
Overwatch
Temple of Anubis 1080p Max 		138 EFps 138 EFps
PUBG
M249 Training 1080p Max 		135 EFps Slightly Better PUBG EFps.
+10% 		123 EFps
Fortnite
UserBenchmark Island 1080p Max 		133 EFps +2% 130 EFps
Effective Speed 
+14%
Real World Speed
Performance profile from 377,342 user samples
Benchmark your CPU here
65,122 User Benchmarks
Best Bench: 102% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 81% Base clock 3.7 GHz, turbo 3.7 GHz (avg)
Poor: 81% Great: 102%
SPEED RANK: 140th / 1468
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 95%
Nuclear submarine
Workstation
Workstation 77%
Battleship
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: 231st / 1468
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
Effective Speed
Effective CPU Speed 		93.2 % Faster effective speed.
+14% 		81.8 %
Average Score 
+17%
Memory
Avg. Memory Latency 		91.4 Pts Slightly lower memory latency.
+8% 		84.9 Pts
1-Core
Avg. Single Core Speed 		134 Pts Faster single-core speed.
+19% 		113 Pts
2-Core
Avg. Dual Core Speed 		267 Pts Faster dual-core speed.
+19% 		224 Pts
4-Core
Avg. Quad Core Speed 		521 Pts Faster quad-core speed.
+20% 		434 Pts
8-Core
Avg. Octa Core Speed 		686 Pts Faster octa-core speed.
+22% 		564 Pts
Overclocked Score 
+21%
Memory
OC Memory Latency 		96.4 Pts +2% 94.2 Pts
1-Core
OC Single Core Speed 		151 Pts Faster OC single-core speed.
+26% 		120 Pts
2-Core
OC Dual Core Speed 		303 Pts Faster OC dual-core speed.
+28% 		237 Pts
4-Core
OC Quad Core Speed 		597 Pts Faster OC quad-core speed.
+27% 		471 Pts
8-Core
OC Octa Core Speed 		808 Pts Faster OC octa-core speed.
+23% 		657 Pts
Value & Sentiment 
+39%
Market Share
Based on 68,908,715 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.29 % 0.81 % Hugely higher market share.
+179%
Value
Value For Money 		107 % Slightly better value.
+8% 		98.8 %
User Rating
UBM User Rating 		82 % Much more popular.
+32% 		62 %
Price
Price (score) 		$170 $140 Cheaper.
+18%
Nice To Haves 
+23%
Age
Newest 		66+ Months More recent.
+22% 		85 Months
64-Core
OC Multi Core Speed 		838 Pts Faster OC 64-core speed.
+24% 		675 Pts
64-Core
Avg. Multi Core Speed 		712 Pts Faster 64-core speed.
+21% 		588 Pts
Specifications 
Launch Date
Launch Date 		Q1'19 Q4'17
Cache
Cache 		9 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions 		Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX2
Max Turbo Frequency
Max Turbo Frequency 		4.60 GHz 4.00 GHz
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015D (130W) PCG 2015C (65W)
Max Memory Size
Max Memory Size (dependent on memory type) 		128 GB 64 GB
TSX-NI
Intel® TSX-NI 		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 »
Conclusion 
Average Bench 93.2%
Average Bench 81.8%

My favorite CPU of all time after the Core i3-8100 that I upgraded it from, to this, the amazing Core i5-9600KF, that has no problem being soft overclocked to 4.8 GHz on all cores with no stability or heat issues. I just love it and I have been using and don't plan on upgrading it anytime soon. What a beast! [Jun '23 therealmustii]

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 
65,122
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) November 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]

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
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark the gold standard for users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $169Nvidia RTX 4060 $295WD Black SN850X M.2 2TB $135
Intel Core i5-12400F $111Nvidia RTX 4060-Ti $345WD Black SN850X M.2 1TB $80
Intel Core i5-13600K $225Nvidia RTX 4070 $500Crucial T700 M.2 4TB $350
Today's hottest
Amazon Ebay
deals
If you buy something via a price link, UserBenchmark may earn a commission
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback