IntelBX80677I77700K
IntelBX80646I74790K

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

Real World Speed
Performance profile from 230,839 user samples
117,598 User Benchmarks
Best Bench: 111% Base clock 4.2 GHz
Worst Bench: 88% Base clock 4.2 GHz, turbo 1.45 GHz (avg)
Poor: 88% Great: 111%
SPEED RANK: 15th / 980
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 100%
Nuclear submarine
Workstation
Workstation 73%
Battleship
113,241 User Benchmarks
Best Bench: 101% Base clock 4.8 GHz, turbo 5.75 GHz (avg)
Worst Bench: 76% Base clock 4 GHz, turbo 0.9 GHz (avg)
Poor: 76% Great: 101%
SPEED RANK: 27th / 980
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 90%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed
99.1 % Slightly faster effective speed.
+12%
88.8 % -12%
SC Mixed
Avg. Single Core Mixed Speed
139 Pts Slightly faster single-core speed.
+10%
126 Pts -10%
QC Mixed
Avg. Quad Core Mixed Speed
486 Pts Slightly faster quad-core speed.
+12%
435 Pts -12%
MC Mixed
Avg. Multi Core Mixed Speed
737 Pts Slightly faster multi-core speed.
+14%
645 Pts -14%
SC Mixed
OC Single Core Mixed Speed
153 Pts Slightly faster OC single-core speed.
+10%
139 Pts -10%
QC Mixed
OC Quad Core Mixed Speed
556 Pts Slightly faster OC quad-core speed.
+8%
513 Pts -8%
MC Mixed
OC Multi Core Mixed Speed
814 Pts Slightly faster OC multi-core speed.
+12%
728 Pts -12%
Market Share
Based on 6,274,411 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.85 % Hugely higher market share.
+105%
1.88 % -105%
Value
Value For Money
101 % Better value.
+18%
85.2 % -18%
User Rating
UBM User Rating
160 % Much more popular.
+63%
98 % -63%
Price
Price (score)
$280 Slightly cheaper.
+14%
$326 -14%
Age
Newest
11 Months Much more recent.
+74%
42 Months -74%
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
157 Pts Slightly faster single-core fp speed.
+11%
141 Pts -11%
QC Int
Quad Core Integer Speed
546 Pts Slightly faster quad-core int speed.
+8%
507 Pts -8%
QC Float
Quad Core Floating Point Speed
576 Pts Slightly faster quad-core fp speed.
+12%
512 Pts -12%
MC Int
Multi Core Integer Speed
753 Pts Slightly faster multi-core int speed.
+9%
693 Pts -9%
MC Float
Multi Core Floating Point Speed
863 Pts Faster multi-core fp speed.
+16%
741 Pts -16%
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 will 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) December 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 $280Nvidia GTX 1070 $410Samsung 850 Evo 250GB $88
AMD Ryzen 7 1700 $285AMD RX 480 $265Samsung 850 Pro 256GB $113
Intel Core i5-7600K $215Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $140
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $215SanDisk Ultra Fit 32GB $10
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