Intel
IntelBX80684I78700K

2 Cores, 4 Threads @1.7 GHz, Haswell.
Release date ≤ Q1 2014.

6 Cores, 12 Threads @3.7GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 758,449 user samples
12,162 User Benchmarks
Best Bench: 53% Base clock 1.7 GHz, turbo 1.7 GHz (avg)
Worst Bench: 26% Base clock 1.7 GHz, turbo 1.7 GHz (avg)
Poor: 26% Great: 53%
SPEED RANK: 959th / 1442
Gaming
Gaming 44%
Speed boat
Desktop
Desktop 48%
Yacht
Workstation
Workstation 30%
Sail boat
746,287 User Benchmarks
Best Bench: 100% Base clock 3.7 GHz, turbo 5.05 GHz (avg)
Worst Bench: 76% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 76% Great: 100%
SPEED RANK: 148th / 1442
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 90%
Nuclear submarine
Workstation
Workstation 80%
Battleship
Effective Speed
Effective CPU Speed
44 % 88.4 % Hugely faster effective speed.
+101%
Memory
Avg. Memory Latency
69.3 Pts 90.1 Pts Much lower memory latency.
+30%
1-Core
Avg. Single Core Speed
41 Pts 128 Pts Hugely faster single-core speed.
+212%
2-Core
Avg. Dual Core Speed
72.7 Pts 249 Pts Hugely faster dual-core speed.
+243%
4-Core
Avg. Quad Core Speed
110 Pts 466 Pts Hugely faster quad-core speed.
+324%
8-Core
Avg. Octa Core Speed
113 Pts 770 Pts Hugely faster octa-core speed.
+581%
Memory
OC Memory Latency
84.3 Pts 96.5 Pts Lower OC memory latency.
+14%
1-Core
OC Single Core Speed
48.4 Pts 148 Pts Hugely faster OC single-core speed.
+206%
2-Core
OC Dual Core Speed
89.3 Pts 292 Pts Hugely faster OC dual-core speed.
+227%
4-Core
OC Quad Core Speed
130 Pts 558 Pts Hugely faster OC quad-core speed.
+329%
8-Core
OC Octa Core Speed
130 Pts 892 Pts Hugely faster OC octa-core speed.
+586%
Market Share
Based on 67,696,894 CPUs tested
Market Share
Market Share (trailing 30 days)
0.01 % 1.48 % Insanely higher market share.
+14,700%
Value
Value For Money
43.9 % 98.4 % Hugely better value.
+124%
User Rating
UBM User Rating
50 % 81 % Much more popular.
+62%
Price
Price (score)
$280 $188 Much cheaper.
+33%
Age
Newest
122+ Months 78 Months Much more recent.
+36%
64-Core
OC Multi Core Speed
131 Pts 1147 Pts Hugely faster OC 64-core speed.
+776%
64-Core
Avg. Multi Core Speed
114 Pts 971 Pts Hugely faster 64-core speed.
+752%
Launch Date
Launch Date
Q3'13 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
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$281.00 N/A
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
16 GB 64 GB
Memory Types
Memory Types
DDR3L 1333/1600, LPDDR3 1333/1600 DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4400 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
200 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1 GHz 1.20 GHz
Graphics Video Max Memory
Graphics Video Max Memory
2 GB 64 GB
Package Size
Package Size
40mm x 24mm x 1.5mm 37.5mm x 37.5mm
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
No 2.0
TSX-NI
Intel® TSX-NI
No Yes
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Revision
PCI Express Revision
2.0 3.0
PCI Express Configurations
PCI Express Configurations ‡
4x1, 2x4 Up to 1x16 or 2x8 or 1x8+2x4
Max # of PCI Express Lanes
Max # of PCI Express Lanes
12 16

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) 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

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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $132Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $186Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair 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 deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback