COMPARE
Today's hottest
Amazon Ebay
deals
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
IntelBX80684I38100
IntelBX80684I78086K
▲ 674,343 ▼

4 Cores, 4 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

VS
▲ 55797 ▼

6 Cores, 12 Threads @4.00 GHz, Coffee Lake.
Release date ≈ Q2 2018.

Effective Speed 
+29%
Real World Speed
Performance profile from 119,478 user samples
Benchmark your CPU here
81,392 User Benchmarks
Best Bench: 80% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Worst Bench: 53% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Poor: 53% Great: 80%
SPEED RANK: 408th / 1468
Gaming
Gaming 71%
Battleship
Desktop
Desktop 77%
Battleship
Workstation
Workstation 53%
Yacht
38,086 User Benchmarks
Best Bench: 102% Base clock 4 GHz, turbo 5.15 GHz (avg)
Worst Bench: 81% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 81% Great: 102%
SPEED RANK: 153rd / 1468
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 93%
Nuclear submarine
Workstation
Workstation 82%
Aircraft carrier
Effective Speed
Effective CPU Speed 		70.6 % 90.8 % Faster effective speed.
+29%
Average Score 
+45%
Memory
Avg. Memory Latency 		81.8 Pts 91.6 Pts Lower memory latency.
+12%
1-Core
Avg. Single Core Speed 		106 Pts 132 Pts Faster single-core speed.
+25%
2-Core
Avg. Dual Core Speed 		210 Pts 256 Pts Faster dual-core speed.
+22%
4-Core
Avg. Quad Core Speed 		342 Pts 484 Pts Much faster quad-core speed.
+42%
8-Core
Avg. Octa Core Speed 		359 Pts 800 Pts Hugely faster octa-core speed.
+123%
Overclocked Score 
+49%
Memory
OC Memory Latency 		93.4 Pts 97 Pts +4%
1-Core
OC Single Core Speed 		112 Pts 153 Pts Much faster OC single-core speed.
+37%
2-Core
OC Dual Core Speed 		224 Pts 304 Pts Much faster OC dual-core speed.
+36%
4-Core
OC Quad Core Speed 		408 Pts 580 Pts Much faster OC quad-core speed.
+42%
8-Core
OC Octa Core Speed 		419 Pts 948 Pts Hugely faster OC octa-core speed.
+126%
Value & Sentiment 
+61%
Market Share
Based on 68,908,535 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.23 % Hugely higher market share.
+156% 		0.09 %
Value
Value For Money 		84 % +2% 82.2 %
User Rating
UBM User Rating 		67 % More popular.
+22% 		55 %
Price
Price (score) 		$148 Much cheaper.
+63% 		$399
Nice To Haves 
+124%
Age
Newest 		85 Months 76+ Months More recent.
+11%
64-Core
OC Multi Core Speed 		420 Pts 1194 Pts Hugely faster OC 64-core speed.
+184%
64-Core
Avg. Multi Core Speed 		364 Pts 1008 Pts Hugely faster 64-core speed.
+177%
Specifications 
Launch Date
Launch Date 		Q4'17 Q2'18
Cache
Cache 		6 MB 12 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX2 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015C (65W) PCG 2015D (130W)
Memory Types
Memory Types 		DDR4-2400 DDR4-2666
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.10 GHz 1.20 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology ‡ 		No 2.0
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		No Yes
TSX-NI
Intel® TSX-NI 		No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		No Yes
PCI Express Configurations
PCI Express Configurations ‡ 		Up to 1x16 or 2x8 or 1x8+2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
Conclusion 
Average Bench 70.6%
Average Bench 90.8%

Intel’s i3-8100 from their 8th generation of Core processors is a mainstream quad-core CPU. It is the entry model of the latest Coffee Lake line up with a clock speed of 3.6 GHz. Previously, i3 Kaby Lake processors had two cores with hyperthreading, but now, i3 Coffee Lake processors have 4 cores and offer much better value for money in terms of dollars per core. With a performance profile that closely matches last years mid range Kaby Lake i5's (the then go-to mid range gaming choice) and a price tag of just $120, the i3-8100 represents excellent value for money. Unfortunately, like all Coffe Lake processors, the i3-8100 does require a new 300-series motherboard even though it shares the same LGA1151 socket as the previous generation of Kaby Lake 200 motherboards. Intel were clearly mindful of AMD's similarly priced quad core Ryzen 3 1200 which achieves very comparable single, and quad-core benchmarks to the i3-8100.  [Oct '17 CPUPro]

MORE DETAILS

Intel are celebrating the 40th anniversary of their x86 architecture and 8086 processor with the launch of their high-end i7-8086K. Just 50,000 units of this hex core, twelve threaded Coffee Lake processor have been made available globally. Exactly like the i7-8700K, the 8086K features 12MB of smart (L3) cache, 2 channels of DDR4 RAM and has a TDP of 95W. Essentially, the 8086K is Intel’s current Coffee Lake flagship, the i7-8700K, with a single-core turbo frequency factory overclocked by 300 MHz. Thermals permitting, out of the box, the i7-8086K achieves a single core boost speed of 5.0 GHz – which is a new record for Intel. That said, you would be unlucky if you were unable to achieve a 5.0 GHz single core OC with an 8700K. For everything other than single core, the turbo clock speeds on the 8086K exactly match the 8700K which puts the 8086K firmly into gimmick territory. Directly comparing the 8086K and 8700K shows that for a $100 (24%) price premium you get around a 5% performance improvement which drops to around 2% when both chips are overclocked. If the price gap between the 8086K and the 8700K were to fall to less than 20 USD it may be worth considering the 8086K. [Jun '18 CPUPro]

MORE DETAILS

User Builds 
81,392
38,086
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