IntelBX80662I76700K
IntelBX80684I38100

4 Cores, 8 Threads @4.0GHz, Skylake.
Release date: Q3 2015.

4 Cores, 4 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 546,585 user samples
467,605 User Benchmarks
Best Bench: 95% Base clock 4 GHz, turbo 4.7 GHz (avg)
Worst Bench: 68% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 68% Great: 95%
SPEED RANK: 98th / 1272
Gaming
Gaming 83%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 69%
Battle cruiser
78,980 User Benchmarks
Best Bench: 84% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Worst Bench: 63% Base clock 0.9 GHz, turbo 0.9 GHz (avg)
Poor: 63% Great: 84%
SPEED RANK: 167th / 1272
Gaming
Gaming 77%
Battleship
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 58%
Gunboat
Effective Speed
Effective CPU Speed
83.5 % Slightly faster effective speed.
+8%
77.1 %
Memory
Avg. Memory Latency
90 Pts +3% 87 Pts
1-Core
Avg. Single Core Mixed Speed
123 Pts Faster single-core speed.
+16%
106 Pts
2-Core
Avg. Dual Core Mixed Speed
235 Pts Faster dual-core speed.
+12%
209 Pts
4-Core
Avg. Quad Core Mixed Speed
416 Pts Slightly faster quad-core speed.
+7%
388 Pts
8-Core
Avg. Octa Core Mixed Speed
627 Pts Much faster octa-core speed.
+59%
395 Pts
Memory
OC Memory Latency
96.9 Pts +3% 94.3 Pts
1-Core
OC Single Core Mixed Speed
142 Pts Faster OC single-core speed.
+27%
112 Pts
2-Core
OC Dual Core Mixed Speed
277 Pts Faster OC dual-core speed.
+24%
224 Pts
4-Core
OC Quad Core Mixed Speed
510 Pts Faster OC quad-core speed.
+17%
436 Pts
8-Core
OC Octa Core Mixed Speed
743 Pts Much faster OC octa-core speed.
+70%
436 Pts
Market Share
Based on 34,473,337 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.19 % Hugely higher market share.
+284%
0.31 %
Value
Value For Money
83.7 % 98.6 % Better value.
+18%
User Rating
UBM User Rating
140 % Much more popular.
+33%
105 %
Price
Price (score)
$276 $114 Much cheaper.
+59%
Age
Newest
62 Months 36 Months Much more recent.
+42%
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 GHz Faster base frequency.
+11%
3.6 GHz
Turbo Clock
Turbo Clock Speed
4.2 GHz Faster turbo frequency.
+17%
3.6 GHz
64-Core
OC Multi Core Mixed Speed
745 Pts Much faster OC 64-core speed.
+69%
440 Pts
64-Core
Avg. Multi Core Mixed Speed
634 Pts Much faster 64-core speed.
+60%
397 Pts
Series
CPU Architecture
Skylake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 530 UHD 630
Launch Date
Launch Date
Q3'15 Q4'17
Cache
Cache
8 MB SmartCache 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
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2400
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® UHD Graphics 630
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 i7-6700K is Intel's latest "Skylake" flagship processor. It replaces the hugely successful i7-4790K and takes the crown as the fastest mainstream consumer CPU available. Comparing performance and specs between the 4790K and 6700K shows that the configuration is largely unchanged (same base clocks, cores, threads) but the improved manufacturing process (14nm) brings a small reduction in TDP and a performance improvement of 8%; almost exactly the same jump as between the Ivy Bridge 3770K and Haswell 4770K. Owners of any unlocked-K Intel CPU from Sandy Bridge or onwards still have no real reason to upgrade as the performance improvements are largely academic but the i7-6700K will be the CPU of choice for the vast majority of top end PC builds in 2015. [Aug '15 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) October 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.
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.
  • - 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.
  • - 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.
  • - Share your opinion by voting.

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