IntelBX80677I77700K
IntelBX80684I38100

4 Cores, 8 Threads
@4.2GHz Kaby Lake (2017)

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

Real World Speed
Performance profile from 163,515 user samples
156,289 User Benchmarks
Best Bench: 112% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 87% Base clock 4.2 GHz, turbo 4.5 GHz (avg)
Poor: 87% Great: 112%
SPEED RANK: 17th / 1110
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
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
99.3 % Faster effective speed.
+24%
80 %
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Faster single-core speed.
+27%
110 Pts
QC Mixed
Avg. Quad Core Mixed Speed
486 Pts Faster quad-core speed.
+17%
415 Pts
MC Mixed
Avg. Multi Core Mixed Speed
737 Pts Much faster multi-core speed.
+73%
427 Pts
SC Mixed
OC Single Core Mixed Speed
154 Pts Much faster OC single-core speed.
+35%
114 Pts
QC Mixed
OC Quad Core Mixed Speed
565 Pts Faster OC quad-core speed.
+25%
452 Pts
MC Mixed
OC Multi Core Mixed Speed
812 Pts Much faster OC multi-core speed.
+78%
456 Pts
Market Share
Based on 9,332,833 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.45 % Hugely higher market share.
+362%
0.53 %
Value
Value For Money
101 % 115 % Slightly better value.
+14%
User Rating
UBM User Rating
117 % Much more popular.
+65%
71 %
Price
Price (score)
$278 $110 Much cheaper.
+61%
Age
Newest
17 Months 8 Months Much more recent.
+53%
TDP
Thermal Design Power (TDP)
91 Watts 65 Watts More energy efficient.
+29%
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads Hugely higher thread count.
+100%
4 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+17%
3.6 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+25%
3.6 GHz
SC Int
Single Core Integer Speed
151 Pts Much faster single-core int speed.
+36%
111 Pts
SC Float
Single Core Floating Point Speed
157 Pts Much faster single-core fp speed.
+34%
117 Pts
QC Int
Quad Core Integer Speed
554 Pts Faster quad-core int speed.
+26%
441 Pts
QC Float
Quad Core Floating Point Speed
586 Pts Faster quad-core fp speed.
+25%
468 Pts
MC Int
Multi Core Integer Speed
751 Pts Much faster multi-core int speed.
+70%
442 Pts
MC Float
Multi Core Floating Point Speed
858 Pts Hugely faster multi-core fp speed.
+83%
470 Pts
Series
CPU Architecture
Kaby Lake (2017) Coffee Lake (2017)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 630 UHD 630
Launch Date
Launch Date
Q1'17 Q4'17
Cache
Cache
8 MB 6 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-2400
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
1.15 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
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 Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '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.
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.
  • - Drive tests include: read, write and mixed IO.
  • - 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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