COMPARE
Today's hottest
Amazon Ebay
deals
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
IntelBX80684I58600K
IntelBX80684I38100
▲ 775,117 ▼

6 Cores, 6 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

VS
▲ 674,343 ▼

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

Effective Speed 
+28%
Real World Speed
Performance profile from 346,229 user samples
Benchmark your CPU here
264,837 User Benchmarks
Best Bench: 101% Base clock 3.6 GHz, turbo 4.95 GHz (avg)
Worst Bench: 79% Base clock 3.6 GHz, turbo 4.05 GHz (avg)
Poor: 79% Great: 101%
SPEED RANK: 154th / 1468
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 74%
Battleship
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
Effective Speed
Effective CPU Speed 		90.7 % Faster effective speed.
+28% 		70.6 %
Average Score 
+37%
Memory
Avg. Memory Latency 		90.1 Pts Lower memory latency.
+10% 		81.8 Pts
1-Core
Avg. Single Core Speed 		129 Pts Faster single-core speed.
+22% 		106 Pts
2-Core
Avg. Dual Core Speed 		257 Pts Faster dual-core speed.
+22% 		210 Pts
4-Core
Avg. Quad Core Speed 		502 Pts Much faster quad-core speed.
+47% 		342 Pts
8-Core
Avg. Octa Core Speed 		656 Pts Hugely faster octa-core speed.
+83% 		359 Pts
Overclocked Score 
+42%
Memory
OC Memory Latency 		96.5 Pts +3% 93.4 Pts
1-Core
OC Single Core Speed 		151 Pts Much faster OC single-core speed.
+35% 		112 Pts
2-Core
OC Dual Core Speed 		302 Pts Much faster OC dual-core speed.
+35% 		224 Pts
4-Core
OC Quad Core Speed 		594 Pts Much faster OC quad-core speed.
+46% 		408 Pts
8-Core
OC Octa Core Speed 		798 Pts Hugely faster OC octa-core speed.
+90% 		419 Pts
Value & Sentiment 
+40%
Market Share
Based on 68,907,033 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.45 % Hugely higher market share.
+96% 		0.23 %
Value
Value For Money 		113 % Much better value.
+35% 		84 %
User Rating
UBM User Rating 		77 % More popular.
+15% 		67 %
Price
Price (score) 		$125 Cheaper.
+16% 		$148
Nice To Haves 
+30%
Age
Newest 		85 Months 85 Months
TDP
Thermal Design Power (TDP) 		95 Watts 65 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores 		6 cores Much higher core count.
+50% 		4 cores
Threads
CPU Processing Threads 		6 threads Much higher thread count.
+50% 		4 threads
Lithography
Manufacturing process 		14 nm 14 nm
Base Clock
Base Clock Speed 		3.6 GHz 3.6 GHz
Turbo Clock
Turbo Clock Speed 		4.3 GHz Faster turbo frequency.
+19% 		3.6 GHz
64-Core
OC Multi Core Speed 		828 Pts Hugely faster OC 64-core speed.
+97% 		420 Pts
64-Core
Avg. Multi Core Speed 		681 Pts Hugely faster 64-core speed.
+87% 		364 Pts
Specifications 
Series
CPU Architecture 		Coffee Lake Coffee Lake
Socket
Motherboard Socket 		FCLGA1151 FCLGA1151
Graphics
Integrated Graphics 		UHD 630 UHD 630
Cache
Cache 		9 MB 6 MB
Thermal Solution Specification
Thermal Solution Specification 		PCG 2015C (130W) PCG 2015C (65W)
Memory Types
Memory Types 		DDR4-2666 DDR4-2400
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.15 GHz 1.10 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology ‡ 		2.0 No
TSX-NI
Intel® TSX-NI 		Yes No
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

More specs » More specs »
Conclusion 
Average Bench 90.7%
Average Bench 70.6%

The unlocked hex-core i5-8600K from Intel’s latest Coffee Lake generation of processors is the new flagship of the i5 series, succeeding the Kaby Lake quad-core i5-7600K. The 8th generation of processors brings the largest performance uplift since Sandy Bridge by adding more cores at each of the i3, i5 and i7 product lines. Like the other Coffee Lake processors, the i5-8600K is built upon optimized 14nm architecture, marginally improved upon from Kaby Lake and Skylake. The 8600K has a 95W TDP and a nominal stock clock of 3.6 GHz, which boosts to 4.1 GHz for all six cores, 4.2 GHz for dual/quad and 4.3 GHz for single core. Early benchmarks put the i5-8600K’s effective speed 15% ahead of the i5-7600K. A 50% increase in multi-core speed is explained by two additional cores and thanks to the quad-core clock bump from 4 GHz on the 7600K to 4.2 GHz on the 8600K there is also an additional 5% performance boost across all workloads. All Coffee Lake processors require a 300-series chipset, making a straight CPU upgrade unfeasible despite sharing the same socket as their Z270 predecessors. Even though most games still use less than 4 cores simultaneously, the i5-8600K is a great choice for gamers but for $80 less, the 8350K which is faster than last years 7600K and only marginally weaker for gaming than the 8600K is certainly well worth considering as well. [Oct '17 CPUPro]

MORE DETAILS

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

User Builds 
264,837
81,392
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