IntelBX80677I57500T
IntelBX80684I78700K
  

4 Cores, 4 Threads @2.70 GHz, Kaby Lake.
Release date ≈ Q1 2017.

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

Real World Speed
Performance profile from 562,345 user samples
3,254 User Benchmarks
Best Bench: 77% Base clock 2.7 GHz, turbo 3.1 GHz (avg)
Worst Bench: 55% Base clock 0.8 GHz, turbo 0.8 GHz (avg)
Poor: 55% Great: 77%
SPEED RANK: 299th / 1276
Gaming
Gaming 70%
Battle cruiser
Desktop
Desktop 74%
Battleship
Workstation
Workstation 52%
Yacht
559,091 User Benchmarks
Best Bench: 104% Base clock 3.7 GHz, turbo 5.2 GHz (avg)
Worst Bench: 79% Base clock 3.7 GHz, turbo 0.8 GHz (avg)
Poor: 79% Great: 104%
SPEED RANK: 29th / 1276
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 84%
Aircraft carrier
Effective Speed
Effective CPU Speed
70 % 92.7 % Much faster effective speed.
+32%
Memory
Avg. Memory Latency
82.7 Pts 92.5 Pts Lower memory latency.
+12%
1-Core
Avg. Single Core Mixed Speed
92.2 Pts 134 Pts Much faster single-core speed.
+45%
2-Core
Avg. Dual Core Mixed Speed
180 Pts 262 Pts Much faster dual-core speed.
+46%
4-Core
Avg. Quad Core Mixed Speed
331 Pts 499 Pts Much faster quad-core speed.
+51%
8-Core
Avg. Octa Core Mixed Speed
337 Pts 816 Pts Hugely faster octa-core speed.
+142%
Memory
OC Memory Latency
91 Pts 97.6 Pts Slightly lower OC memory latency.
+7%
1-Core
OC Single Core Mixed Speed
102 Pts 154 Pts Much faster OC single-core speed.
+51%
2-Core
OC Dual Core Mixed Speed
198 Pts 305 Pts Much faster OC dual-core speed.
+54%
4-Core
OC Quad Core Mixed Speed
373 Pts 599 Pts Much faster OC quad-core speed.
+61%
8-Core
OC Octa Core Mixed Speed
375 Pts 965 Pts Hugely faster OC octa-core speed.
+157%
Market Share
Based on 36,346,303 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.01 % 1.82 % Insanely higher market share.
+18,100%
User Rating
UBM User Rating
52 % 159 % Hugely more popular.
+206%
Age
Newest
47+ Months 38 Months More recent.
+19%
64-Core
OC Multi Core Mixed Speed
379 Pts 1197 Pts Hugely faster OC 64-core speed.
+216%
64-Core
Avg. Multi Core Mixed Speed
340 Pts 1024 Pts Hugely faster 64-core speed.
+201%
Launch Date
Launch Date
Q1'17 Q4'17
Cache
Cache
6 MB 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$192.00 - $202.00 N/A
Max Turbo Frequency
Max Turbo Frequency
3.30 GHz 4.70 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015A (35W) PCG 2015C (130W)
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.10 GHz 1.20 GHz
PCI Express Configurations
PCI Express Configurations ‡
Up to 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) December 2020 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.
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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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  • - CPU tests include: integer, floating and string.
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  • - RAM tests include: single/multi core bandwidth and latency.
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HDDRAMUSB
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Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $639SanDisk Ultra Fit 32GB $16
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