IntelBX80677I77700K
IntelBX80646I74790K

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

Real World Speed
Performance profile from 115,457 user samples
44,631 User Benchmarks
Best Bench: 112% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 90% Base clock 4.2 GHz, turbo 0.65 GHz (avg)
Poor: 90% Great: 112%
SPEED RANK: 3rd / 961
Gaming
Gaming 100%
UFO
Desktop
Desktop 100%
UFO
Workstation
Workstation 74%
Battleship
70,826 User Benchmarks
Best Bench: 99% Base clock 4 GHz
Worst Bench: 71% Base clock 4 GHz, turbo 0.55 GHz (avg)
Poor: 71% Great: 99%
SPEED RANK: 18th / 961
Gaming
Gaming 86%
Aircraft carrier
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 63%
Destroyer
Effective Speed
Effective CPU Speed
100 % Faster effective speed.
+15%
86.6 % -15%
SC Mixed
Avg. Single Core Mixed Speed
139 Pts Slightly faster single-core speed.
+13%
123 Pts -13%
QC Mixed
Avg. Quad Core Mixed Speed
493 Pts Faster quad-core speed.
+17%
423 Pts -17%
MC Mixed
Avg. Multi Core Mixed Speed
744 Pts Faster multi-core speed.
+17%
638 Pts -17%
SC Mixed
OC Single Core Mixed Speed
154 Pts Slightly faster OC single-core speed.
+13%
136 Pts -13%
QC Mixed
OC Quad Core Mixed Speed
568 Pts Slightly faster OC quad-core speed.
+14%
497 Pts -14%
MC Mixed
OC Multi Core Mixed Speed
825 Pts Slightly faster OC multi-core speed.
+13%
730 Pts -13%
Market Share
Based on 4,134,475 CPUs tested.
Market Share
Market Share (trailing 30 days)
4.14 % Hugely higher market share.
+111%
1.96 % -111%
Value
Value For Money
97.9 % Better value.
+20%
81.9 % -20%
User Rating
UBM User Rating
141 % Much more popular.
+57%
90 % -57%
Price
Price (score)
$309 Slightly cheaper.
+9%
$339 -9%
Age
Newest
5 Months Hugely more recent.
+86%
36 Months -86%
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
150 Pts Slightly faster single-core int speed.
+8%
139 Pts -8%
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.
+10%
503 Pts -10%
QC Float
Quad Core Floating Point Speed
593 Pts Faster quad-core fp speed.
+16%
513 Pts -16%
MC Int
Multi Core Integer Speed
763 Pts Slightly faster multi-core int speed.
+10%
696 Pts -10%
MC Float
Multi Core Floating Point Speed
872 Pts Faster multi-core fp speed.
+18%
736 Pts -18%
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

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 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) June 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]

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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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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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CPUGPUSSD
Intel Core i7-7700K $309Nvidia GTX 1070 $390Samsung 850 Evo 250GB $100
Intel Core i5-7600K $225AMD RX 480 $608Samsung 850 Pro 256GB $138
AMD Ryzen 7 1700 $278Nvidia GTX 1060-6GB $239Samsung 850 Evo 500GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $83G.SKILL Trident Z DDR4 3200 C14 4x16GB $696SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46HyperX Fury DDR4 2133 C14 2x8GB $133SanDisk Ultra Fit 32GB $13
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