IntelBX80673I97940X
IntelBX80684I78700K

14 Cores, 28 Threads @3.10 GHz, Skylake.
Release date ≈ Q4 2017.

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

Real World Speed
Performance profile from 634,385 user samples
4,172 User Benchmarks
Best Bench: 92% Base clock 3.1 GHz, turbo 3.1 GHz (avg)
Worst Bench: 74% Base clock 3.1 GHz, turbo 3.75 GHz (avg)
Poor: 74% Great: 92%
SPEED RANK: 123rd / 1316
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 98%
Nuclear submarine
630,213 User Benchmarks
Best Bench: 103% Base clock 2.6 GHz
Worst Bench: 81% Base clock 3.7 GHz, turbo 4.3 GHz (avg)
Poor: 81% Great: 103%
SPEED RANK: 47th / 1316
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 84%
Aircraft carrier
Effective Speed
Effective CPU Speed
82.6 % 92.5 % Faster effective speed.
+12%
Memory
Avg. Memory Latency
75.7 Pts 91.9 Pts Lower memory latency.
+21%
1-Core
Avg. Single Core Mixed Speed
123 Pts 134 Pts Slightly faster single-core speed.
+9%
2-Core
Avg. Dual Core Mixed Speed
244 Pts 262 Pts Slightly faster dual-core speed.
+7%
4-Core
Avg. Quad Core Mixed Speed
479 Pts 501 Pts +5%
8-Core
Avg. Octa Core Mixed Speed
946 Pts Faster octa-core speed.
+17%
811 Pts
Memory
OC Memory Latency
85.1 Pts 97.1 Pts Lower OC memory latency.
+14%
1-Core
OC Single Core Mixed Speed
140 Pts 152 Pts Slightly faster OC single-core speed.
+9%
2-Core
OC Dual Core Mixed Speed
277 Pts 301 Pts Slightly faster OC dual-core speed.
+9%
4-Core
OC Quad Core Mixed Speed
549 Pts 591 Pts Slightly faster OC quad-core speed.
+8%
8-Core
OC Octa Core Mixed Speed
1092 Pts Faster OC octa-core speed.
+16%
945 Pts
Market Share
Based on 46,563,551 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.01 % 1.22 % Insanely higher market share.
+12,100%
Value
Value For Money
61.5 % 91 % Much better value.
+48%
User Rating
UBM User Rating
52 % 80 % Much more popular.
+54%
Price
Price (score)
$815 $295 Much cheaper.
+64%
Age
Newest
47+ Months 47 Months
64-Core
OC Multi Core Mixed Speed
2466 Pts Hugely faster OC 64-core speed.
+112%
1165 Pts
64-Core
Avg. Multi Core Mixed Speed
2086 Pts Hugely faster 64-core speed.
+107%
1009 Pts
Launch Date
Launch Date
Q3'17 Q4'17
Cache
Cache
19.25 MB 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2, AVX-512 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$1387.00 - $1399.00 N/A
Max Turbo Frequency
Max Turbo Frequency
4.30 GHz 4.70 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2017X PCG 2015C (130W)
Max Memory Size
Max Memory Size (dependent on memory type)
128 GB 64 GB
Memory Channels
Max # of Memory Channels
4 2
Max # of PCI Express Lanes
Max # of PCI Express Lanes
44 16

More specs » More specs »
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good [Dec '19 Viper207]

MORE DETAILS

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 2021 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]

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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.

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

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