IntelBX80662I36100
IntelBX80684I78700K

2 Cores, 4 Threads
@3.7GHz Skylake (2015)

6 Cores, 12 Threads
@3.7GHz Coffee Lake (2017)

Real World Speed
Performance profile from 64,070 user samples
30,146 User Benchmarks
Best Bench: 67% Base clock 3.1 GHz, turbo 3.7 GHz (avg)
Worst Bench: 45% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 45% Great: 67%
SPEED RANK: 178th / 985
Gaming
Gaming 61%
Destroyer
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 37%
Jet ski
33,924 User Benchmarks
Best Bench: 126% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 94% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 94% Great: 126%
SPEED RANK: 6th / 985
Gaming
Gaming 110%
UFO
Desktop
Desktop 107%
UFO
Workstation
Workstation 97%
Nuclear submarine
Effective Speed
Effective CPU Speed
61.4 % 110 % Much faster effective speed.
+80%
SC Mixed
Avg. Single Core Mixed Speed
106 Pts 140 Pts Much faster single-core speed.
+32%
QC Mixed
Avg. Quad Core Mixed Speed
284 Pts 537 Pts Hugely faster quad-core speed.
+89%
MC Mixed
Avg. Multi Core Mixed Speed
292 Pts 1098 Pts Hugely faster multi-core speed.
+276%
SC Mixed
OC Single Core Mixed Speed
116 Pts 157 Pts Much faster OC single-core speed.
+35%
QC Mixed
OC Quad Core Mixed Speed
313 Pts 624 Pts Hugely faster OC quad-core speed.
+99%
MC Mixed
OC Multi Core Mixed Speed
316 Pts 1263 Pts Hugely faster OC multi-core speed.
+300%
Market Share
Based on 7,391,669 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.49 % 2.84 % Hugely higher market share.
+480%
Value
Value For Money
87.9 % 105 % Better value.
+20%
User Rating
UBM User Rating
78 % 138 % Much more popular.
+77%
Price
Price (score)
$112 Much cheaper.
+66%
$330
Age
Newest
28 Months 4 Months Hugely more recent.
+86%
TDP
Thermal Design Power (TDP)
47 Watts Much more energy efficient.
+51%
95 Watts
Cores
CPU Processing Cores
2 cores 6 cores Hugely higher core count.
+200%
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
3.7 GHz 3.7 GHz
Turbo Clock
Turbo Clock Speed
3.7 GHz 4.7 GHz Faster turbo frequency.
+27%
SC Int
Single Core Integer Speed
113 Pts 154 Pts Much faster single-core int speed.
+36%
SC Float
Single Core Floating Point Speed
118 Pts 160 Pts Much faster single-core fp speed.
+36%
QC Int
Quad Core Integer Speed
290 Pts 612 Pts Hugely faster quad-core int speed.
+111%
QC Float
Quad Core Floating Point Speed
329 Pts 638 Pts Hugely faster quad-core fp speed.
+94%
MC Int
Multi Core Integer Speed
290 Pts 1162 Pts Hugely faster multi-core int speed.
+301%
MC Float
Multi Core Floating Point Speed
330 Pts 1330 Pts Hugely faster multi-core fp speed.
+303%
Series
CPU Architecture
Skylake (2015) Coffee Lake (2017)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 530 UHD 630
Launch Date
Launch Date
Q3'15 Q4'17
Cache
Cache
3 MB SmartCache 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Embedded Options Available
Embedded Options Available
Yes No
Recommended Price
Recommended Customer Price
$117.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2015C (130W)
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2666
ECC Memory Supported
ECC Memory Supported ‡
Yes No
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® UHD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.20 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
No 2.0
TSX-NI
Intel® TSX-NI
No Yes
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
ADVERTISEMENT

The i7-8700K is Intel’s latest, top of the range, 8th generation Coffee Lake processor. Like Kaby Lake and Sky Lake before that, Coffee Lake is based on Intel’s 14nm architecture which has been slightly optimized on each iteration. Following AMD’s modus operandi, Intel has upped the cores and threads across the range of their CPUs. In previous generations, a 6-core processor would have been a high-end desk-top (HEDT) processor, however the i7-8700K is the first Intel CPU with 6 cores and 12 threads to be classified (and priced) as a mainstream consumer processor. Specifically, the i7-8700K features a base clock speed of 3.7 GHz which boosts to 4.7 GHz (4.5 GHz for the previous generation i7-7700k), 12MB of smart (L3) cache and 2 channels of DDR4 RAM. The majority of the performance improvements over the 7th generation stem from the higher core count which results in a 50% increase in multi-core speed between the i7-7700k and i7-8700k. A new motherboard will need to be factored into the budget when upgrading to the 8700K as it requires a new Intel Z370 chipset which has supposedly been designed to better deliver power to CPUs with a greater number of cores. Also available in this latest release of CPUs is the 6 core 6 thread i5-8600k which is a more rational option (around $100 cheaper) for the vast majority of users that don’t require hyper-threading. Sandy bridge owners can finally justify an upgrade but with the next iteration of AMD's Zen architecture just around the corner the CPU market will be a lot faster moving now that Intel, once again, has to compete. [Sep '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) February 2018 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware 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 upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $87
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $140
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $200SanDisk Extreme 16GB $18
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback