IntelBX80684I78700K
IntelBX80684I58600K

6 Cores, 12 Threads
@3.7GHz Coffee Lake (2017)

6 Cores, 6 Threads
@3.6GHz Coffee Lake (2017)

Real World Speed
Performance profile from 120,631 user samples
88,747 User Benchmarks
Best Bench: 126% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 95% Base clock 3.7 GHz, turbo 4.3 GHz (avg)
Poor: 95% Great: 126%
SPEED RANK: 7th / 1110
Gaming
Gaming 110%
UFO
Desktop
Desktop 107%
UFO
Workstation
Workstation 97%
Nuclear submarine
31,884 User Benchmarks
Best Bench: 121% Base clock 3.6 GHz, turbo 5.2 GHz (avg)
Worst Bench: 92% Base clock 0.8 GHz, turbo 0.8 GHz (avg)
Poor: 92% Great: 121%
SPEED RANK: 10th / 1110
Gaming
Gaming 104%
UFO
Desktop
Desktop 100%
Nuclear submarine
Workstation
Workstation 75%
Battleship
Effective Speed
Effective CPU Speed
110 % Slightly faster effective speed.
+6%
104 %
SC Mixed
Avg. Single Core Mixed Speed
140 Pts +4% 135 Pts
QC Mixed
Avg. Quad Core Mixed Speed
535 Pts +1% 529 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1091 Pts Much faster multi-core speed.
+43%
765 Pts
SC Mixed
OC Single Core Mixed Speed
157 Pts 157 Pts
QC Mixed
OC Quad Core Mixed Speed
623 Pts +1% 619 Pts
MC Mixed
OC Multi Core Mixed Speed
1247 Pts Much faster OC multi-core speed.
+38%
903 Pts
Market Share
Based on 9,333,533 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.83 % Hugely higher market share.
+162%
1.46 %
Value
Value For Money
106 % 112 % Slightly better value.
+5%
User Rating
UBM User Rating
138 % More popular.
+17%
118 %
Price
Price (score)
$320 $238 Cheaper.
+26%
Age
Newest
8 Months 8 Months
TDP
Thermal Design Power (TDP)
95 Watts 95 Watts
Cores
CPU Processing Cores
6 cores 6 cores
Threads
CPU Processing Threads
12 threads Hugely higher thread count.
+100%
6 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.7 GHz +3% 3.6 GHz
Turbo Clock
Turbo Clock Speed
4.7 GHz Slightly faster turbo frequency.
+9%
4.3 GHz
SC Int
Single Core Integer Speed
154 Pts +1% 153 Pts
SC Float
Single Core Floating Point Speed
160 Pts 162 Pts +1%
QC Int
Quad Core Integer Speed
612 Pts +3% 597 Pts
QC Float
Quad Core Floating Point Speed
637 Pts 648 Pts +2%
MC Int
Multi Core Integer Speed
1154 Pts Much faster multi-core int speed.
+34%
864 Pts
MC Float
Multi Core Floating Point Speed
1326 Pts Much faster multi-core fp speed.
+39%
956 Pts
Series
CPU Architecture
Coffee Lake (2017) Coffee Lake (2017)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Cache
Cache
12 MB 9 MB
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.15 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No

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]

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The unlocked hex-core i5-8600K from Intel’s latest Coffee Lake generation of processors is the new flagship of the i5 series, succeeding the Kaby Lake quad-core i5-7600K. The 8th generation of processors brings the largest performance uplift since Sandy Bridge by adding more cores at each of the i3, i5 and i7 product lines. Like the other Coffee Lake processors, the i5-8600K is built upon optimized 14nm architecture, marginally improved upon from Kaby Lake and Skylake. The 8600K has a 95W TDP and a nominal stock clock of 3.6 GHz, which boosts to 4.1 GHz for all six cores, 4.2 GHz for dual/quad and 4.3 GHz for single core. Early benchmarks put the i5-8600K’s effective speed 15% ahead of the i5-7600K. A 50% increase in multi-core speed is explained by two additional cores and thanks to the quad-core clock bump from 4 GHz on the 7600K to 4.2 GHz on the 8600K there is also an additional 5% performance boost across all workloads. All Coffee Lake processors require a 300-series chipset, making a straight CPU upgrade unfeasible despite sharing the same socket as their Z270 predecessors. Even though most games still use less than 4 cores simultaneously, the i5-8600K is a great choice for gamers (especially streamers) but for $80 less, the 8350K which is faster than last years 7600K and only marginally weaker for gaming than the 8600K is certainly well worth considering as well. [Oct '17 CPUPro]

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Processor Rankings (Price vs Performance) June 2018 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

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CPUGPUSSD
AMD Ryzen 5 1600 $170Nvidia GTX 1070 $420Samsung 850 Evo 250GB $104
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $138
Intel Core i5-8600K $238AMD RX 480 $280Samsung 850 Pro 256GB $121
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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