COMPARE
Today's hottest
Amazon Ebay
deals
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
IntelBX80684I38350K
IntelBX80684I58400
▲ 551,293 ▼

4 Cores, 4 Threads @4.0GHz, Coffee Lake.
Release date: Q3 2017.

VS
▲ 625,388 ▼

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

Game EFps  
+5%
CSGO
Dust 2 1080p Max 		270 EFps Better CSGO EFps.
+16% 		233 EFps
GTAV
Franklin & Lamar 1080p Max 		108 EFps +1% 107 EFps
Overwatch
Temple of Anubis 1080p Max 		134 EFps 138 EFps +3%
PUBG
M249 Training 1080p Max 		125 EFps +2% 123 EFps
Fortnite
UserBenchmark Island 1080p Max 		145 EFps Better Fortnite EFps.
+12% 		130 EFps
Effective Speed 
+0%
Real World Speed
Performance profile from 335,713 user samples
Benchmark your CPU here
23,493 User Benchmarks
Best Bench: 93% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 68% Base clock 4 GHz, turbo 1.65 GHz (avg)
Poor: 68% Great: 93%
SPEED RANK: 233rd / 1468
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 62%
Destroyer
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 		81.7 % 81.8 % +0%
Average Score 
+1%
Memory
Avg. Memory Latency 		89 Pts +5% 84.9 Pts
1-Core
Avg. Single Core Speed 		123 Pts Slightly faster single-core speed.
+9% 		113 Pts
2-Core
Avg. Dual Core Speed 		245 Pts Slightly faster dual-core speed.
+9% 		224 Pts
4-Core
Avg. Quad Core Speed 		428 Pts 434 Pts +1%
8-Core
Avg. Octa Core Speed 		442 Pts 564 Pts Faster octa-core speed.
+28%
Overclocked Score 
+9%
Memory
OC Memory Latency 		96.6 Pts +3% 94.2 Pts
1-Core
OC Single Core Speed 		146 Pts Faster OC single-core speed.
+22% 		120 Pts
2-Core
OC Dual Core Speed 		290 Pts Faster OC dual-core speed.
+22% 		237 Pts
4-Core
OC Quad Core Speed 		544 Pts Faster OC quad-core speed.
+15% 		471 Pts
8-Core
OC Octa Core Speed 		557 Pts 657 Pts Faster OC octa-core speed.
+18%
Value & Sentiment 
+670%
Market Share
Based on 68,907,033 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.03 % 0.82 % Insanely higher market share.
+2,633%
Value
Value For Money 		91.3 % 98.8 % Slightly better value.
+8%
User Rating
UBM User Rating 		55 % 62 % More popular.
+13%
Price
Price (score) 		$185 $140 Cheaper.
+24%
Nice To Haves 
+16%
Age
Newest 		86 Months 85 Months +1%
TDP
Thermal Design Power (TDP) 		91 Watts 65 Watts More energy efficient.
+29%
Cores
CPU Processing Cores 		4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads 		4 threads 6 threads Much higher thread count.
+50%
Lithography
Manufacturing process 		14 nm 14 nm
Base Clock
Base Clock Speed 		4 GHz Much faster base frequency.
+43% 		2.8 GHz
Turbo Clock
Turbo Clock Speed 		4 GHz 4 GHz
64-Core
OC Multi Core Speed 		545 Pts 675 Pts Faster OC 64-core speed.
+24%
64-Core
Avg. Multi Core Speed 		445 Pts 588 Pts Much faster 64-core speed.
+32%
Specifications 
Series
CPU Architecture 		Coffee Lake Coffee Lake
Socket
Motherboard Socket 		FCLGA1151 FCLGA1151
Graphics
Integrated Graphics 		UHD 630 UHD 630
Cache
Cache 		8 MB 9 MB
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015C (130W) PCG 2015C (65W)
Memory Types
Memory Types 		DDR4-2400 DDR4-2666
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.15 GHz 1.05 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology ‡ 		No 2.0

More specs » More specs »
Conclusion 
Average Bench 81.7%
Average Bench 81.8%

The quad core i3-8350K hails from Intel’s most recent (and as yet unreleased) generation of Coffee Lake processors. It has a stock clock of 4.0 GHz, 8MB of cache and a TDP of 95W. The 8350K is the first i3 processor to feature four cores (previous generations of i3s had two cores and four threads). With this eighth generation of processors, Intel has introduced a step change in their nomenclature which witnesses the old quad core i5s become the new quad core i3s. Our benchmarks show a 25% increase in effective speed between generations of i3 8350K vs 7350K and near equivalence between the outgoing i5-7600K and the new i3-8350K. Although the price points of Coffee Lake are not yet known, if Intel keep them roughly in line with the previous generations (i3 ~= $140) this will represent the best improvement in value for money since Sandy Bridge as the 8350K at $140 would be 34.8% cheaper than a 7600K at $215. Cynics among us will see this as an effort to fend off competition from AMD’s new multi-core Ryzen processors. It appears Intel may have been successful with this move as early benchmarks from the 8350K suggest that it beats the more expensive 8 core Ryzen 7 1700 in single and quad core performance by 25%. The 8350K is a great choice for gaming builds, but the budget will also need to factor in a complementary motherboard based on the new 300 series chipset. Expect the quad core i3-8100 which is the 8350K’s little sister featuring a base clock of 3.6 GHz, to follow shortly. [Aug '17 CPUPro]

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 
23,493
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