COMPARE
Today's hottest
Amazon Ebay
deals
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
IntelBX80684I78086K
IntelBX80662I76700K
▲ 55798 ▼

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

VS
▲ 7947,234 ▼

4 Cores, 8 Threads @4.0GHz, Skylake.
Release date: Q3 2015.

Effective Speed 
+12%
Real World Speed
Performance profile from 627,064 user samples
Benchmark your CPU here
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
588,978 User Benchmarks
Best Bench: 90% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 70% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 70% Great: 90%
SPEED RANK: 243rd / 1468
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 67%
Battle cruiser
Effective Speed
Effective CPU Speed 		90.8 % Faster effective speed.
+12% 		80.8 %
Average Score 
+17%
Memory
Avg. Memory Latency 		91.6 Pts +3% 88.6 Pts
1-Core
Avg. Single Core Speed 		132 Pts Faster single-core speed.
+11% 		119 Pts
2-Core
Avg. Dual Core Speed 		256 Pts Faster dual-core speed.
+14% 		224 Pts
4-Core
Avg. Quad Core Speed 		484 Pts Faster quad-core speed.
+23% 		395 Pts
8-Core
Avg. Octa Core Speed 		800 Pts Much faster octa-core speed.
+34% 		597 Pts
Overclocked Score 
+19%
Memory
OC Memory Latency 		97 Pts +1% 95.9 Pts
1-Core
OC Single Core Speed 		153 Pts Faster OC single-core speed.
+12% 		137 Pts
2-Core
OC Dual Core Speed 		304 Pts Faster OC dual-core speed.
+18% 		258 Pts
4-Core
OC Quad Core Speed 		580 Pts Faster OC quad-core speed.
+26% 		459 Pts
8-Core
OC Octa Core Speed 		948 Pts Much faster OC octa-core speed.
+36% 		696 Pts
Value & Sentiment 
+162%
Market Share
Based on 69,042,228 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.13 % 0.8 % Hugely higher market share.
+515%
Value
Value For Money 		82.2 % 100 % Better value.
+22%
User Rating
UBM User Rating 		55 % 79 % Much more popular.
+44%
Price
Price (score) 		$399 $127 Much cheaper.
+68%
Nice To Haves 
+54%
Age
Newest 		77+ Months Much more recent.
+31% 		111 Months
64-Core
OC Multi Core Speed 		1,194 Pts Much faster OC 64-core speed.
+67% 		716 Pts
64-Core
Avg. Multi Core Speed 		1,008 Pts Much faster 64-core speed.
+65% 		612 Pts
Specifications 
Launch Date
Launch Date 		Q2'18 Q3'15
Cache
Cache 		12 MB SmartCache 8 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions 		Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX 2.0
Recommended Price
Recommended Customer Price 		N/A $339.00 - $350.00
Max Turbo Frequency
Max Turbo Frequency 		5.00 GHz 4.2 GHz
Memory Types
Memory Types 		DDR4-2666 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Bandwidth
Max Memory Bandwidth 		41.6 GB/s 34.1 GB/s
Processor Graphics
Processor Graphics ‡ 		Intel® UHD Graphics 630 Intel® HD Graphics 530
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.20 GHz 1.15 GHz
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		Yes No

More specs » More specs »
Conclusion 
Average Bench 90.8%
Average Bench 80.8%

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

The Core i7-6700K is Intel's latest "Skylake" flagship processor. It replaces the hugely successful i7-4790K and takes the crown as the fastest mainstream consumer CPU available. Comparing performance and specs between the 4790K and 6700K shows that the configuration is largely unchanged (same base clocks, cores, threads) but the improved manufacturing process (14nm) brings a small reduction in TDP and a performance improvement of 8%; almost exactly the same jump as between the Ivy Bridge 3770K and Haswell 4770K. Owners of any unlocked-K Intel CPU from Sandy Bridge or onwards still have no real reason to upgrade as the performance improvements are largely academic but the i7-6700K will be the CPU of choice for the vast majority of top end PC builds in 2015. [Aug '15 CPUPro]

MORE DETAILS

User Builds 
38,086
588,978
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 i5-13600K $210Nvidia RTX 4060 $290WD Black SN850X M.2 2TB $130
Intel Core i5-12400F $111Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12600K $164Nvidia RTX 4070 $500Crucial T700 M.2 4TB $389
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