IntelBX80677I77700K
IntelBX80671I76800K

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

6 Cores, 12 Threads
@3.4GHz Broadwell-E (2016)

Real World Speed
Performance profile from 173,672 user samples
158,585 User Benchmarks
Best Bench: 111% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 86% Base clock 4.2 GHz, turbo 1.75 GHz (avg)
Poor: 86% Great: 111%
SPEED RANK: 17th / 1100
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
15,087 User Benchmarks
Best Bench: 104% Base clock 3.45 GHz, turbo 4.65 GHz (avg)
Worst Bench: 76% Base clock 3.4 GHz
Poor: 76% Great: 104%
SPEED RANK: 36th / 1100
Gaming
Gaming 90%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 78%
Battleship
Effective Speed
Effective CPU Speed
99.1 % Slightly faster effective speed.
+10%
89.7 %
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Faster single-core speed.
+25%
112 Pts
QC Mixed
Avg. Quad Core Mixed Speed
484 Pts Slightly faster quad-core speed.
+10%
441 Pts
MC Mixed
Avg. Multi Core Mixed Speed
737 Pts 880 Pts Faster multi-core speed.
+19%
SC Mixed
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+18%
131 Pts
QC Mixed
OC Quad Core Mixed Speed
562 Pts Slightly faster OC quad-core speed.
+8%
520 Pts
MC Mixed
OC Multi Core Mixed Speed
818 Pts 1019 Pts Faster OC multi-core speed.
+25%
Market Share
Based on 8,488,958 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.55 % Insanely higher market share.
+1,600%
0.15 %
Value
Value For Money
99.3 % Better value.
+24%
80 %
User Rating
UBM User Rating
134 % Hugely more popular.
+100%
67 %
Price
Price (score)
$290 Cheaper.
+27%
$395
Age
Newest
15 Months Much more recent.
+32%
22 Months
TDP
Thermal Design Power (TDP)
91 Watts Much more energy efficient.
+35%
140 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads 12 threads Much higher thread count.
+50%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+24%
3.4 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+18%
3.8 GHz
SC Int
Single Core Integer Speed
152 Pts Faster single-core int speed.
+22%
125 Pts
SC Float
Single Core Floating Point Speed
158 Pts Faster single-core fp speed.
+15%
137 Pts
QC Int
Quad Core Integer Speed
549 Pts Slightly faster quad-core int speed.
+12%
492 Pts
QC Float
Quad Core Floating Point Speed
574 Pts Slightly faster quad-core fp speed.
+5%
546 Pts
MC Int
Multi Core Integer Speed
752 Pts 940 Pts Faster multi-core int speed.
+25%
MC Float
Multi Core Floating Point Speed
869 Pts 1085 Pts Faster multi-core fp speed.
+25%
Series
CPU Architecture
Kaby Lake (2017) Broadwell-E (2016)
Socket
Motherboard Socket
FCLGA1151 LGA2011-V3
Graphics
Integrated Graphics
HD 630 None
Launch Date
Launch Date
Q1'17 Q2'16
Cache
Cache
8 MB 15 MB
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4 2400/2133
Memory Channels
Max # of Memory Channels
2 4
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 None
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 28

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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The Core i7-6800K is the weakest of four new 14 nm Broadwell-E prosumer CPUs. This model has six cores with base and turbo frequencies of 3.4 and 3.8 GHz, a TDP of 140 watts and 28 PCIe 3.0 lanes. The 6800K closely matches, and supersedes, the very popular Haswell-E 5820K. Because of its MSRP of around $500, this CPU only makes sense for niche use cases which include graphics design, video production or multi GPU gaming. Comparing the 6800K and 6700K shows that for typical desktop use, at stock clocks, the 6800K actually lags the 6700K by around 10%. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher (Base clock 4.0 GHz vs 3.4 GHz) and has higher IPC due to its one generation lead over the 6800K. If the 6800K proves to be a capable overclocker then it may challenge the 6700K on a range of core-heavy use cases, time will tell. [Jun '16 CPUPro]

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Processor Rankings (Price vs Performance) April 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.

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CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $90
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $290Samsung 850 Evo 500GB $137
AMD Ryzen 5 1600 $176AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $193SanDisk Extreme 16GB $18
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