IntelBX80671I76900K
IntelBX80684I78700K

8 Cores, 16 Threads @3.2GHz, Broadwell-E.
Release date: Q2 2016.

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About

6 Cores, 12 Threads @3.7GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 326,624 user samples
3,909 User Benchmarks
Best Bench: 95% Base clock 3.2 GHz, turbo 3.6 GHz (avg)
Worst Bench: 71% Base clock 3.2 GHz, turbo 3.2 GHz (avg)
Poor: 71% Great: 95%
SPEED RANK: 49th / 1184
Gaming
Gaming 81%
Aircraft carrier
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 80%
Aircraft carrier
322,715 User Benchmarks
Best Bench: 107% Base clock 3.7 GHz, turbo 5.15 GHz (avg)
Worst Bench: 76% Base clock 3.7 GHz, turbo 4.3 GHz (avg)
Poor: 76% Great: 107%
SPEED RANK: 13th / 1184
Gaming
Gaming 92%
Nuclear submarine
Desktop
Desktop 95%
Nuclear submarine
Workstation
Workstation 79%
Battleship
Effective Speed
Effective CPU Speed
81.5 % 92.4 % Slightly faster effective speed.
+13%
1-Core
Avg. Single Core Mixed Speed
115 Pts 137 Pts Faster single-core speed.
+19%
2-Core
Avg. Dual Core Mixed Speed
229 Pts 270 Pts Faster dual-core speed.
+18%
4-Core
Avg. Quad Core Mixed Speed
459 Pts 520 Pts Slightly faster quad-core speed.
+13%
8-Core
Avg. Octa Core Mixed Speed
853 Pts +1% 848 Pts
64-Core
Avg. Multi Core Mixed Speed
1175 Pts Slightly faster 64-core speed.
+10%
1065 Pts
1-Core
OC Single Core Mixed Speed
134 Pts 155 Pts Faster OC single-core speed.
+16%
2-Core
OC Dual Core Mixed Speed
268 Pts 308 Pts Slightly faster OC dual-core speed.
+15%
4-Core
OC Quad Core Mixed Speed
537 Pts 608 Pts Slightly faster OC quad-core speed.
+13%
8-Core
OC Octa Core Mixed Speed
1039 Pts +5% 990 Pts
64-Core
OC Multi Core Mixed Speed
1374 Pts Slightly faster OC 64-core speed.
+13%
1220 Pts
Market Share
Based on 21,014,828 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.01 % 2.01 % Insanely higher market share.
+20,000%
Value
Value For Money
62.1 % 86.4 % Much better value.
+39%
User Rating
UBM User Rating
58 % 132 % Hugely more popular.
+128%
Price
Price (score)
$747 $355 Much cheaper.
+52%
Age
Newest
40 Months 24 Months Much more recent.
+40%
TDP
Thermal Design Power (TDP)
140 Watts 95 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores
8 cores Much higher core count.
+33%
6 cores
Threads
CPU Processing Threads
16 threads Much higher thread count.
+33%
12 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.2 GHz 3.7 GHz Faster base frequency.
+16%
Turbo Clock
Turbo Clock Speed
4 GHz 4.7 GHz Faster turbo frequency.
+17%
Series
CPU Architecture
Broadwell-E Coffee Lake
Socket
Motherboard Socket
LGA2011-V3 FCLGA1151
Graphics
Integrated Graphics
None UHD 630
Launch Date
Launch Date
Q2'16 Q4'17
Cache
Cache
20 MB 12 MB
Max Memory Size
Max Memory Size (dependent on memory type)
128 GB 64 GB
Memory Types
Memory Types
DDR4 2400/2133 DDR4-2666
Memory Channels
Max # of Memory Channels
4 2
Processor Graphics
Processor Graphics ‡
None Intel® UHD Graphics 630
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
Max # of PCI Express Lanes
Max # of PCI Express Lanes
40 16

More specs » More specs »
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The Core i7-6900K is one of four new Broadwell-E prosumer CPUs. This model has eight cores with base and turbo frequencies of 3.2 and 4.0 GHz respectively. The 6900K is based on a 14 nm architecture, it has a TDP of 140 watts, 40 PCIe 3.0 lanes and no integrated graphics. Because of its MSRP of $1,100, the 6900K only makes sense for very niche use cases which include top end graphics design and video production. Comparing the 6900K and 6700K shows that for typical desktop use the 6900K only offers a gain of around 12% for a whopping three fold price increase. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher and has higher IPC due to its one generation lead over the 6900K. That said, as a workstation CPU the 6900K is bested only by the $2,000 flagship ten core 6950X. (6900K vs 6950X[Jun '16 CPUPro]

MORE DETAILS

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]

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

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  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - 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.
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  • - 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 $145Nvidia 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 $200
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $83G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $70SanDisk Ultra Fit 32GB $14
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