IntelBX80677I77700K
IntelBX80646I74790K

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

Real World Speed
Performance profile from 62,087 user samples
5,597 User Benchmarks
Best Bench: 119% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 97% Base clock 4.2 GHz, turbo 1.55 GHz (avg)
Poor: 97% Great: 119%
SPEED RANK: 2nd / 945
Gaming
Gaming 107%
UFO
Desktop
Desktop 106%
UFO
Workstation
Workstation 77%
Battleship
56,490 User Benchmarks
Best Bench: 104% Base clock 4 GHz, turbo 4.9 GHz (avg)
Worst Bench: 81% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 81% Great: 104%
SPEED RANK: 10th / 945
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 67%
Battle cruiser
Effective Speed
Effective CPU Speed
107 % Slightly faster effective speed.
+14%
93.5 % -14%
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Slightly faster single-core speed.
+13%
124 Pts -13%
QC Mixed
Avg. Quad Core Mixed Speed
499 Pts Slightly faster quad-core speed.
+14%
436 Pts -14%
MC Mixed
Avg. Multi Core Mixed Speed
752 Pts Slightly faster multi-core speed.
+15%
654 Pts -15%
SC Mixed
OC Single Core Mixed Speed
155 Pts Slightly faster OC single-core speed.
+13%
137 Pts -13%
QC Mixed
OC Quad Core Mixed Speed
569 Pts Slightly faster OC quad-core speed.
+12%
506 Pts -12%
MC Mixed
OC Multi Core Mixed Speed
838 Pts Faster OC multi-core speed.
+15%
727 Pts -15%
Market Share
Based on 2,896,108 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.6 % Slightly higher market share.
+13%
2.3 % -13%
Value
Value For Money
100 % Slightly better value.
+13%
88.3 % -13%
User Rating
UBM User Rating
106 % Much more popular.
+45%
73 % -45%
Price
Price (score)
$346 -2% $339 +2%
Age
Newest
1 Months Hugely more recent.
+97%
32 Months -97%
TDP
Thermal Design Power (TDP)
91 Watts -3% 88 Watts +3%
Cores
CPU Processing Cores
4 cores 0% 4 cores 0%
Threads
CPU Processing Threads
8 threads 0% 8 threads 0%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm -36%
Base Clock
Base Clock Speed
4.2 GHz +5% 4 GHz -5%
Turbo Clock
Turbo Clock Speed
4.5 GHz +2% 4.4 GHz -2%
SC Int
Single Core Integer Speed
151 Pts Slightly faster single-core int speed.
+9%
139 Pts -9%
SC Float
Single Core Floating Point Speed
159 Pts Slightly faster single-core fp speed.
+14%
140 Pts -14%
QC Int
Quad Core Integer Speed
552 Pts Slightly faster quad-core int speed.
+7%
514 Pts -7%
QC Float
Quad Core Floating Point Speed
585 Pts Slightly faster quad-core fp speed.
+12%
521 Pts -12%
MC Int
Multi Core Integer Speed
772 Pts Slightly faster multi-core int speed.
+11%
696 Pts -11%
MC Float
Multi Core Floating Point Speed
877 Pts Faster multi-core fp speed.
+19%
739 Pts -19%
Series
CPU Architecture
Kaby Lake (2017) Haswell (2013)
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 630 HD 4600
Launch Date
Launch Date
Q1'17 Q2'14
Cache
Cache
8 MB 8 MB SmartCache
Lithography
Lithography
14 nm 22 nm
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2013D
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD Graphics 4600
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.25 GHz
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 2 GB
TSX-NI
Intel® TSX-NI
Yes No

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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 architecture is due for release later this year so things could change at that time. [Jan '17 CPUPro]

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The Intel Core i7-4790K, codenamed Devil's Canyon, is an upgraded 4770K, Intel's current flagship i7. The 4790K features an improved thermal interface which enables it to dissipate heat more efficiently than the 4770K. Comparing the 4770K and 4790K shows that stock performance has improved by 13% which is consistent with the base clock jump from 3.5 GHz to 4.0 GHz. OC performance remains unchanged. Comparing the 4790K and 4790 shows that at stock clocks the 4790K is around 16% faster which considering the small price difference makes the 4790K a far better choice. Previously Intel targeted the unlocked K versions at overclockers but with Devil's Canyon they have included VT-d on the K chip and this time it's squarely aimed at both power users and overclockers alike. Until the release of Broadwell in six months, the 4790K is the high end CPU of choice. [Jul '14 CPUPro]

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Processor Rankings (Price vs Performance) February 2017 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.

UserBenchmark of the month

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 $346Nvidia GTX 1070 $370Samsung 850 Evo 250GB $94
Intel Pentium G4560 $75AMD RX 480 $175Samsung 850 Pro 256GB $121
Intel Core i5-7600K $230Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $125SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $570SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $50HyperX Fury DDR4 2133 C14 2x8GB $123SanDisk Ultra Fit 32GB $9
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