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 138,827 user samples
126,440 User Benchmarks
Best Bench: 112% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 87% Base clock 4.2 GHz, turbo 4.2 GHz (avg)
Poor: 87% Great: 112%
SPEED RANK: 14th / 981
Gaming
Gaming 100%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
12,387 User Benchmarks
Best Bench: 103% Base clock 3.4 GHz, turbo 4.5 GHz (avg)
Worst Bench: 76% Base clock 3.4 GHz, turbo 0.2 GHz (avg)
Poor: 76% Great: 103%
SPEED RANK: 27th / 981
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 78%
Battleship
Effective Speed
Effective CPU Speed
99.7 % Slightly faster effective speed.
+12%
89.2 % -12%
SC Mixed
Avg. Single Core Mixed Speed
139 Pts Faster single-core speed.
+25%
111 Pts -25%
QC Mixed
Avg. Quad Core Mixed Speed
491 Pts Slightly faster quad-core speed.
+12%
439 Pts -12%
MC Mixed
Avg. Multi Core Mixed Speed
740 Pts -19% 879 Pts Faster multi-core speed.
+19%
SC Mixed
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+19%
130 Pts -19%
QC Mixed
OC Quad Core Mixed Speed
562 Pts Slightly faster OC quad-core speed.
+9%
516 Pts -9%
MC Mixed
OC Multi Core Mixed Speed
824 Pts -23% 1015 Pts Faster OC multi-core speed.
+23%
Market Share
Based on 6,895,074 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.57 % Insanely higher market share.
+2,000%
0.17 % -2,000%
Value
Value For Money
101 % Better value.
+22%
83.3 % -22%
User Rating
UBM User Rating
147 % Hugely more popular.
+119%
67 % -119%
Price
Price (score)
$280 Cheaper.
+20%
$350 -20%
Age
Newest
12 Months Much more recent.
+37%
19 Months -37%
TDP
Thermal Design Power (TDP)
91 Watts Much more energy efficient.
+35%
140 Watts -35%
Cores
CPU Processing Cores
4 cores -50% 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads -50% 12 threads Much higher thread count.
+50%
Lithography
Manufacturing process
14 nm 0% 14 nm 0%
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+24%
3.4 GHz -24%
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+18%
3.8 GHz -18%
SC Int
Single Core Integer Speed
152 Pts Faster single-core int speed.
+24%
123 Pts -24%
SC Float
Single Core Floating Point Speed
158 Pts Faster single-core fp speed.
+15%
137 Pts -15%
QC Int
Quad Core Integer Speed
547 Pts Slightly faster quad-core int speed.
+12%
489 Pts -12%
QC Float
Quad Core Floating Point Speed
576 Pts Slightly faster quad-core fp speed.
+6%
542 Pts -6%
MC Int
Multi Core Integer Speed
760 Pts -23% 938 Pts Faster multi-core int speed.
+23%
MC Float
Multi Core Floating Point Speed
871 Pts -25% 1086 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

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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) January 2018 CPU Rankings.

Welcome to our desktop CPU comparison. We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by price to yield a value for money rating which is geared towards gamers. Calculated values don't always paint the whole picture so we check them against hundreds of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top CPUs. [CPUPro]

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 i7-7700K $280Nvidia GTX 1070 $430Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $290Nvidia GTX 1060-6GB $275Samsung 850 Evo 500GB $140
Intel Core i5-7600K $210AMD RX 480 $400Samsung 850 Pro 256GB $110
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $65
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $220SanDisk Ultra Fit 32GB $12
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