IntelBX80662I76700K
IntelBX80684I99900K

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

VS
About

8 Cores, 16 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2018.

Real World Speed
Performance profile from 462,467 user samples
373,448 User Benchmarks
Best Bench: 91% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 59% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 59% Great: 91%
SPEED RANK: 60th / 1184
Gaming
Gaming 76%
Battleship
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 57%
Gunboat
89,019 User Benchmarks
Best Bench: 110% Base clock 3.6 GHz, turbo 5.05 GHz (avg)
Worst Bench: 79% Base clock 3.6 GHz, turbo 1.45 GHz (avg)
Poor: 79% Great: 110%
SPEED RANK: 1st / 1184
Gaming
Gaming 101%
UFO
Desktop
Desktop 101%
UFO
Workstation
Workstation 101%
UFO
Effective Speed
Effective CPU Speed
76.3 % 101 % Much faster effective speed.
+32%
1-Core
Avg. Single Core Mixed Speed
125 Pts 145 Pts Faster single-core speed.
+16%
2-Core
Avg. Dual Core Mixed Speed
241 Pts 288 Pts Faster dual-core speed.
+20%
4-Core
Avg. Quad Core Mixed Speed
429 Pts 567 Pts Much faster quad-core speed.
+32%
8-Core
Avg. Octa Core Mixed Speed
640 Pts 1059 Pts Much faster octa-core speed.
+65%
64-Core
Avg. Multi Core Mixed Speed
650 Pts 1500 Pts Hugely faster 64-core speed.
+131%
1-Core
OC Single Core Mixed Speed
142 Pts 156 Pts Slightly faster OC single-core speed.
+10%
2-Core
OC Dual Core Mixed Speed
283 Pts 310 Pts Slightly faster OC dual-core speed.
+10%
4-Core
OC Quad Core Mixed Speed
521 Pts 618 Pts Faster OC quad-core speed.
+19%
8-Core
OC Octa Core Mixed Speed
751 Pts 1209 Pts Much faster OC octa-core speed.
+61%
64-Core
OC Multi Core Mixed Speed
758 Pts 1656 Pts Hugely faster OC 64-core speed.
+118%
Market Share
Based on 21,111,888 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.44 % Much higher market share.
+52%
0.95 %
Value
Value For Money
76.1 % 88 % Better value.
+16%
User Rating
UBM User Rating
93 % 142 % Much more popular.
+53%
Price
Price (score)
$280 Much cheaper.
+38%
$455
Age
Newest
50 Months 12 Months Much more recent.
+76%
TDP
Thermal Design Power (TDP)
91 Watts +4% 95 Watts
Cores
CPU Processing Cores
4 cores 8 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
8 threads 16 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4 GHz Slightly faster base frequency.
+11%
3.6 GHz
Turbo Clock
Turbo Clock Speed
4.2 GHz 5 GHz Faster turbo frequency.
+19%
Series
CPU Architecture
Skylake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 530 UHD 630
Launch Date
Launch Date
Q3'15 Q4'18
Cache
Cache
8 MB SmartCache 16 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $488.00 - $499.00
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2666
Memory Bandwidth
Max Memory Bandwidth
34.1 GB/s 41.6 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® UHD Graphics 630
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.20 GHz
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes

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]

MORE DETAILS

The Intel i9-9900K is an 8 core, 16 thread, unlocked 9th generation Coffee Lake processor. It has a base / boost clocks of 3.6 / 4.7 GHz and a single-core boost of 5.0 GHz (the highest frequency achieved yet from this class of Intel CPU). It features 16 MB of cache, a 95W TDP and Intel UHD 630 graphics. The 9900K is compatible with the new Z390 chipset, and subject to a BIOS update, is also compatible with the older Z370 chipset. Aimed at users who do not wish to compromise, the i9-9900K offers the best gaming and desktop experience available at any price. Heavy workstation users should consider the Ryzen 9 3900X which is similarly priced. Comparing the overclocked 3900X shows that it is just 10% worse for gaming and desktop (sub octa-core) but around 40% better for 64-core computations. Gamers should consider the 9700K which offers identical overclocked gaming performance at a $100 USD discount. [Oct '18 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) October 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. 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.
  • 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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CPUGPUSSD
Intel Core i5-9400F $148Nvidia GTX 1660 $210Samsung 850 Evo 250GB $57
Intel Core i5-9600K $240Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $107
Intel Core i7-9700K $350Nvidia RTX 2060 $349Samsung 850 Pro 256GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $78G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $83SanDisk Ultra Fit 32GB $14
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