IntelBX80677I77700K
IntelBX80671I76800K

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

6 Cores, 12 Threads @3.4GHz, Broadwell-E.
Release date: Q2 2016.

Real World Speed
Performance profile from 208,366 user samples
191,868 User Benchmarks
Best Bench: 109% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 81% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 81% Great: 109%
SPEED RANK: 22nd / 1128
Gaming
Gaming 96%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 71%
Battleship
16,498 User Benchmarks
Best Bench: 103% Base clock 3.4 GHz, turbo 4.4 GHz (avg)
Worst Bench: 71% Base clock 2.6 GHz, turbo 1.2 GHz (avg)
Poor: 71% Great: 103%
SPEED RANK: 37th / 1128
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 76%
Battleship
Effective Speed
Effective CPU Speed
95.8 % Slightly faster effective speed.
+9%
87.9 %
SC Mixed
Avg. Single Core Mixed Speed
136 Pts Faster single-core speed.
+24%
110 Pts
QC Mixed
Avg. Quad Core Mixed Speed
466 Pts Slightly faster quad-core speed.
+8%
432 Pts
MC Mixed
Avg. Multi Core Mixed Speed
724 Pts 857 Pts Faster multi-core speed.
+18%
SC Mixed
OC Single Core Mixed Speed
152 Pts Faster OC single-core speed.
+17%
130 Pts
QC Mixed
OC Quad Core Mixed Speed
554 Pts Slightly faster OC quad-core speed.
+8%
514 Pts
MC Mixed
OC Multi Core Mixed Speed
811 Pts 997 Pts Faster OC multi-core speed.
+23%
Market Share
Based on 10,949,281 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.84 % Insanely higher market share.
+1,214%
0.14 %
Value
Value For Money
91.6 % Better value.
+22%
75.1 %
User Rating
UBM User Rating
132 % Hugely more popular.
+103%
65 %
Price
Price (score)
$329 Cheaper.
+26%
$443
Age
Newest
20 Months More recent.
+26%
27 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
148 Pts Faster single-core int speed.
+18%
125 Pts
SC Float
Single Core Floating Point Speed
157 Pts Faster single-core fp speed.
+15%
136 Pts
QC Int
Quad Core Integer Speed
542 Pts Slightly faster quad-core int speed.
+10%
493 Pts
QC Float
Quad Core Floating Point Speed
583 Pts Slightly faster quad-core fp speed.
+9%
536 Pts
MC Int
Multi Core Integer Speed
744 Pts 918 Pts Faster multi-core int speed.
+23%
MC Float
Multi Core Floating Point Speed
856 Pts 1071 Pts Faster multi-core fp speed.
+25%
Series
CPU Architecture
Kaby Lake Broadwell-E
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]

MORE DETAILS

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]

MORE DETAILS

Processor Rankings (Price vs Performance) September 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.
  • 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.
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  • - Explore your best upgrade options with a virtual PC build.
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  • - Share your opinion by voting.

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CPUGPUSSD
Intel Core i7-8700K $360Nvidia GTX 1070 $344Samsung 850 Evo 250GB $86
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $110
Intel Core i7-7700K $329AMD RX 480 $280Samsung 850 Pro 256GB $135
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $158SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $899SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $33Corsair Vengeance LPX DDR4 3200 C16 2x8GB $160SanDisk Ultra Fit 32GB $11
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