Intel
IntelBX80684I78700K

4 Cores, 8 Threads @2.8 GHz, Bloomfield.
Release date ≤ Q4 2013.

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

Real World Speed
Performance profile from 653,146 user samples
22,933 User Benchmarks
Best Bench: 75% Base clock 4.2 GHz, turbo 4.2 GHz (avg)
Worst Bench: 53% Base clock 2.8 GHz, turbo 3 GHz (avg)
Poor: 53% Great: 75%
SPEED RANK: 408th / 1316
Gaming
Gaming 66%
Battle cruiser
Desktop
Desktop 68%
Battle cruiser
Workstation
Workstation 50%
Yacht
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: 49th / 1316
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 84%
Aircraft carrier
Effective Speed
Effective CPU Speed
65.6 % 92.5 % Much faster effective speed.
+41%
Memory
Avg. Memory Latency
87.7 Pts 91.9 Pts +5%
1-Core
Avg. Single Core Mixed Speed
70.2 Pts 134 Pts Hugely faster single-core speed.
+91%
2-Core
Avg. Dual Core Mixed Speed
135 Pts 262 Pts Hugely faster dual-core speed.
+94%
4-Core
Avg. Quad Core Mixed Speed
239 Pts 501 Pts Hugely faster quad-core speed.
+110%
8-Core
Avg. Octa Core Mixed Speed
336 Pts 811 Pts Hugely faster octa-core speed.
+141%
Memory
OC Memory Latency
95.8 Pts 97.1 Pts +1%
1-Core
OC Single Core Mixed Speed
83.8 Pts 152 Pts Hugely faster OC single-core speed.
+81%
2-Core
OC Dual Core Mixed Speed
166 Pts 301 Pts Hugely faster OC dual-core speed.
+81%
4-Core
OC Quad Core Mixed Speed
313 Pts 591 Pts Hugely faster OC quad-core speed.
+89%
8-Core
OC Octa Core Mixed Speed
424 Pts 945 Pts Hugely faster OC octa-core speed.
+123%
Market Share
Based on 46,412,578 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.04 % 1.22 % Insanely higher market share.
+2,950%
Value
Value For Money
78.9 % 89 % Better value.
+13%
User Rating
UBM User Rating
53 % 80 % Much more popular.
+51%
Price
Price (score)
$142 Much cheaper.
+56%
$320
Age
Newest
93+ Months 47 Months Much more recent.
+49%
64-Core
OC Multi Core Mixed Speed
423 Pts 1165 Pts Hugely faster OC 64-core speed.
+175%
64-Core
Avg. Multi Core Mixed Speed
340 Pts 1009 Pts Hugely faster 64-core speed.
+197%
Launch Date
Launch Date
Q1'10 Q4'17
Cache
Cache
8 MB SmartCache 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.2 SSE4.1/4.2, AVX2
Lithography
Lithography
45 nm 14 nm
Recommended Price
Recommended Customer Price
$305.00 N/A
Max Turbo Frequency
Max Turbo Frequency
3.06 GHz 4.70 GHz
Bus Speed
Bus Speed
4.8 GT/s QPI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
24 GB 64 GB
Memory Types
Memory Types
DDR3 800/1066 DDR4-2666
Memory Channels
Max # of Memory Channels
3 2
Package Size
Package Size
42.5mm x 45.0mm 37.5mm x 37.5mm
Thermal Monitoring Technologies
Thermal Monitoring Technologies
No Yes
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
1.0 2.0
AES New Instructions
Intel® AES New Instructions
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes

More specs » More specs »
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Don't be fooled by the "i7" name. It performs like a Core 2 Quad with Hyperthreading. Overall performance is fine, but the processor is so insanely power hungry that your power bill will actually take a small hit. Similar to FX processors, it is a glorified space heater with bad IPC. [Apr '20 Viriyena]

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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The Best.
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HDDRAMUSB
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