COMPARE
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
IntelBX80662I56600K
IntelBX80671I76800K
▲ 7428,938 ▼

4 Cores, 4 Threads @3.5GHz, Skylake.
Release date: Q3 2015.

VS
▲ 659,589 ▼

6 Cores, 12 Threads @3.4GHz, Broadwell-E.
Release date: Q2 2016.

Effective Speed 
+12%
Real World Speed
Performance profile from 392,440 user samples
Benchmark your CPU here
342,244 User Benchmarks
Best Bench: 85% Base clock 3.5 GHz, turbo 4.7 GHz (avg)
Worst Bench: 57% Base clock 3.5 GHz, turbo 3.55 GHz (avg)
Poor: 57% Great: 85%
SPEED RANK: 355th / 1442
Gaming
Gaming 72%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 55%
Yacht
50,196 User Benchmarks
Best Bench: 90% Base clock 3.4 GHz, turbo 4.1 GHz (avg)
Worst Bench: 71% Base clock 3.4 GHz, turbo 1.2 GHz (avg)
Poor: 71% Great: 90%
SPEED RANK: 221st / 1442
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 82%
Aircraft carrier
Workstation
Workstation 71%
Battleship
Effective Speed
Effective CPU Speed 		72.4 % 80.9 % Faster effective speed.
+12%
Average Score 
+18%
Memory
Avg. Memory Latency 		83.3 Pts 86 Pts +3%
1-Core
Avg. Single Core Speed 		110 Pts +3% 107 Pts
2-Core
Avg. Dual Core Speed 		218 Pts +2% 214 Pts
4-Core
Avg. Quad Core Speed 		352 Pts 408 Pts Faster quad-core speed.
+16%
8-Core
Avg. Octa Core Speed 		373 Pts 660 Pts Much faster octa-core speed.
+77%
Overclocked Score 
+10%
Memory
OC Memory Latency 		95.2 Pts +0% 94.9 Pts
1-Core
OC Single Core Speed 		136 Pts Slightly faster OC single-core speed.
+10% 		124 Pts
2-Core
OC Dual Core Speed 		269 Pts Slightly faster OC dual-core speed.
+8% 		248 Pts
4-Core
OC Quad Core Speed 		455 Pts 483 Pts Slightly faster OC quad-core speed.
+6%
8-Core
OC Octa Core Speed 		476 Pts 770 Pts Much faster OC octa-core speed.
+62%
Value & Sentiment 
+131%
Market Share
Based on 67,720,645 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.5 % Hugely higher market share.
+525% 		0.08 %
Value
Value For Money 		102 % 115 % Better value.
+13%
User Rating
UBM User Rating 		74 % More popular.
+14% 		65 %
Price
Price (score) 		$81 $78 +4%
Nice To Haves 
+48%
Age
Newest 		104 Months 94 Months Slightly more recent.
+10%
TDP
Thermal Design Power (TDP) 		91 Watts Much more energy efficient.
+35% 		140 Watts
Cores
CPU Processing Cores 		4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads 		4 threads 12 threads Hugely higher thread count.
+200%
Lithography
Manufacturing process 		14 nm 14 nm
Base Clock
Base Clock Speed 		3.5 GHz +3% 3.4 GHz
Turbo Clock
Turbo Clock Speed 		3.9 GHz +3% 3.8 GHz
64-Core
OC Multi Core Speed 		484 Pts 956 Pts Hugely faster OC 64-core speed.
+98%
64-Core
Avg. Multi Core Speed 		378 Pts 827 Pts Hugely faster 64-core speed.
+119%
Specifications 
Series
CPU Architecture 		Skylake Broadwell-E
Socket
Motherboard Socket 		FCLGA1151 LGA2011-V3
Graphics
Integrated Graphics 		HD 530 None
Launch Date
Launch Date 		Q3'15 Q2'16
Cache
Cache 		6 MB SmartCache 15 MB
Recommended Price
Recommended Customer Price 		$242.00 - $243.00 N/A
Max Turbo Frequency
Max Turbo Frequency 		3.9 GHz 3.8 GHz
Max Memory Size
Max Memory Size (dependent on memory type) 		64 GB 128 GB
Memory Types
Memory Types 		DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4 2400/2133
Memory Channels
Max # of Memory Channels 		2 4
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics 530 None
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		No Yes
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		16 28

More specs » More specs »
Conclusion 
Average Bench 72.4%
Average Bench 80.9%
ADVERTISEMENT

The Intel Core i5-6600K is based on the new "Skylake" 14nm manufacturing process. Sporting 4 physical cores with base/turbo clocks of 3.5/3.9 GHz the 6600K and its predecessor, the 4690K share the same basic configuration and disappointingly, offer similar performance. Comparing the 6600K and 6700K shows that the 6700K has faster multi and single core performance. The improved multi core performance is due to Hyperthreading which is the key differentiator for the i7-6700K. The gap in single core performance can largely be eliminated by overclocking the i5-6600K so although the stock effective speed is significantly higher on the 6700K, this gap diminishes significantly when both processors are overclocked. At a 30% discount, the 6600K is the better value gaming CPU. [Aug '15 CPUPro]

MORE DETAILS

The Core i7-6800K is the weakest of four new 14 nm Broadwell-E prosumer CPUs. This model has six cores with base and turbo frequencies of 3.4 and 3.8 GHz, a TDP of 140 watts and 28 PCIe 3.0 lanes. The 6800K closely matches, and supersedes, the very popular Haswell-E 5820K. Because of its MSRP of around $500, this CPU only makes sense for niche use cases which include graphics design, video production or multi GPU gaming. Comparing the 6800K and 6700K shows that for typical desktop use, at stock clocks, the 6800K actually lags the 6700K by around 10%. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher (Base clock 4.0 GHz vs 3.4 GHz) and has higher IPC due to its one generation lead over the 6800K. If the 6800K proves to be a capable overclocker then it may challenge the 6700K on a range of core-heavy use cases, time will tell. [Jun '16 CPUPro]

MORE DETAILS

User Builds 
342,244
50,196
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) April 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]

ADVERTISEMENT

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
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback