IntelBX80684I78700K
IntelBX80684I38100

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

4 Cores, 4 Threads
@3.6GHz Coffee Lake (2017)

Real World Speed
Performance profile from 95,973 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
7,226 User Benchmarks
Best Bench: 86% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Worst Bench: 66% Base clock 3.6 GHz, turbo 2.15 GHz (avg)
Poor: 66% Great: 86%
SPEED RANK: 59th / 1110
Gaming
Gaming 80%
Aircraft carrier
Desktop
Desktop 78%
Battleship
Workstation
Workstation 49%
Yacht
Effective Speed
Effective CPU Speed
110 % Much faster effective speed.
+37%
80 %
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Faster single-core speed.
+27%
110 Pts
QC Mixed
Avg. Quad Core Mixed Speed
535 Pts Faster quad-core speed.
+29%
415 Pts
MC Mixed
Avg. Multi Core Mixed Speed
1091 Pts Hugely faster multi-core speed.
+156%
427 Pts
SC Mixed
OC Single Core Mixed Speed
157 Pts Much faster OC single-core speed.
+38%
114 Pts
QC Mixed
OC Quad Core Mixed Speed
623 Pts Much faster OC quad-core speed.
+38%
452 Pts
MC Mixed
OC Multi Core Mixed Speed
1247 Pts Hugely faster OC multi-core speed.
+173%
456 Pts
Market Share
Based on 9,332,833 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.81 % Hugely higher market share.
+619%
0.53 %
Value
Value For Money
106 % 115 % Slightly better value.
+9%
User Rating
UBM User Rating
138 % Hugely more popular.
+94%
71 %
Price
Price (score)
$320 $110 Much cheaper.
+66%
Age
Newest
8 Months 8 Months
TDP
Thermal Design Power (TDP)
95 Watts 65 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
12 threads Hugely higher thread count.
+200%
4 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 Much faster turbo frequency.
+31%
3.6 GHz
SC Int
Single Core Integer Speed
154 Pts Much faster single-core int speed.
+39%
111 Pts
SC Float
Single Core Floating Point Speed
160 Pts Much faster single-core fp speed.
+37%
117 Pts
QC Int
Quad Core Integer Speed
612 Pts Much faster quad-core int speed.
+39%
441 Pts
QC Float
Quad Core Floating Point Speed
637 Pts Much faster quad-core fp speed.
+36%
468 Pts
MC Int
Multi Core Integer Speed
1154 Pts Hugely faster multi-core int speed.
+161%
442 Pts
MC Float
Multi Core Floating Point Speed
1326 Pts Hugely faster multi-core fp speed.
+182%
470 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 6 MB
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (130W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-2666 DDR4-2400
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.10 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
Trusted Execution Tech
Intel® Trusted Execution 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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Intel’s i3-8100 from their 8th generation of Core processors is a mainstream quad-core CPU. It is the entry model of the latest Coffee Lake line up with a clock speed of 3.6 GHz. Previously, i3 Kaby Lake processors had two cores with hyperthreading, but now, i3 Coffee Lake processors have 4 cores and offer much better value for money in terms of dollars per core. With a performance profile that closely matches last years mid range Kaby Lake i5's (the then go-to mid range gaming choice) and a price tag of just $120, the i3-8100 represents excellent value for money. Unfortunately, like all Coffe Lake processors, the i3-8100 does require a new 300-series motherboard even though it shares the same LGA1151 socket as the previous generation of Kaby Lake 200 motherboards. Intel were clearly mindful of AMD's similarly priced quad core Ryzen 3 1200 which achieves very comparable single, and quad-core benchmarks to the i3-8100.  [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.
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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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  • - Reports are generated and presented on userbenchmark.com.
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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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