IntelBX80646E31231V3
IntelBX80684I78700K

4 Cores, 8 Threads @3.4 GHz, Haswell.
Release date ≈ Q2 2014.

VS
About

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

Real World Speed
Performance profile from 349,606 user samples
11,055 User Benchmarks
Best Bench: 72% Base clock 3.4 GHz, turbo 3.75 GHz (avg)
Worst Bench: 48% Base clock 3.4 GHz, turbo 0.3 GHz (avg)
Poor: 48% Great: 72%
SPEED RANK: 143rd / 1182
Gaming
Gaming 62%
Destroyer
Desktop
Desktop 68%
Battle cruiser
Workstation
Workstation 46%
Yacht
338,551 User Benchmarks
Best Bench: 107% Base clock 3.7 GHz
Worst Bench: 77% Base clock 3.7 GHz, turbo 1.3 GHz (avg)
Poor: 77% Great: 107%
SPEED RANK: 14th / 1182
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 78%
Battleship
Effective Speed
Effective CPU Speed
62 % 91.9 % Much faster effective speed.
+48%
1-Core
Avg. Single Core Mixed Speed
102 Pts 136 Pts Much faster single-core speed.
+33%
2-Core
Avg. Dual Core Mixed Speed
198 Pts 268 Pts Much faster dual-core speed.
+35%
4-Core
Avg. Quad Core Mixed Speed
349 Pts 518 Pts Much faster quad-core speed.
+48%
8-Core
Avg. Octa Core Mixed Speed
514 Pts 840 Pts Much faster octa-core speed.
+63%
64-Core
Avg. Multi Core Mixed Speed
525 Pts 1054 Pts Hugely faster 64-core speed.
+101%
1-Core
OC Single Core Mixed Speed
113 Pts 154 Pts Much faster OC single-core speed.
+36%
2-Core
OC Dual Core Mixed Speed
223 Pts 307 Pts Much faster OC dual-core speed.
+38%
4-Core
OC Quad Core Mixed Speed
416 Pts 607 Pts Much faster OC quad-core speed.
+46%
8-Core
OC Octa Core Mixed Speed
569 Pts 983 Pts Much faster OC octa-core speed.
+73%
64-Core
OC Multi Core Mixed Speed
567 Pts 1217 Pts Hugely faster OC 64-core speed.
+115%
Market Share
Based on 20,161,276 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.05 % 2.11 % Insanely higher market share.
+4,120%
Value
Value For Money
64 % 86.3 % Much better value.
+35%
User Rating
UBM User Rating
56 % 121 % Hugely more popular.
+116%
Price
Price (score)
$248 Cheaper.
+29%
$350
Age
Newest
63+ Months 23 Months Much more recent.
+63%
Launch Date
Launch Date
Q2'14 Q4'17
Cache
Cache
8 MB SmartCache 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$240.00 - $250.00 N/A
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
PCG 2013D PCG 2015C (130W)
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 and DDR3L 1333/1600 at 1.5V DDR4-2666
ECC Memory Supported
ECC Memory Supported ‡
Yes No
Processor Graphics
Processor Graphics ‡
None Intel® UHD Graphics 630
PCI Express Configurations
PCI Express Configurations ‡
1x16, 2x8, 1x8/2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »
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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) September 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. 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]

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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 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.

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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.
  • - 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.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-9400F $140Nvidia GTX 1660 $220Samsung 850 Evo 250GB $80
Intel Core i5-9600K $219Nvidia GTX 1660-Ti $278Samsung 850 Evo 500GB $105
AMD Ryzen 5 3600 $195Nvidia RTX 2060 $330Samsung 850 Pro 256GB $219
HDDRAMUSB
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3000 C15 2x8GB $78SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $34G.SKILL Trident Z DDR4 3200 C14 4x16GB $618SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3200 C16 2x8GB $83SanDisk Extreme 16GB $24
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