IntelBX80646I74790K
IntelBX80677I77700K

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

Real World Speed
Performance profile from 287,905 user samples
131,857 User Benchmarks
Best Bench: 101% Base clock 4 GHz
Worst Bench: 72% Base clock 4 GHz
Poor: 72% Great: 101%
SPEED RANK: 39th / 1100
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
156,048 User Benchmarks
Best Bench: 113% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 87% Base clock 4.2 GHz, turbo 1.7 GHz (avg)
Poor: 87% Great: 113%
SPEED RANK: 18th / 1100
Gaming
Gaming 100%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
Effective Speed
Effective CPU Speed
88.4 % 99.7 % Slightly faster effective speed.
+13%
SC Mixed
Avg. Single Core Mixed Speed
125 Pts 140 Pts Slightly faster single-core speed.
+12%
QC Mixed
Avg. Quad Core Mixed Speed
433 Pts 489 Pts Slightly faster quad-core speed.
+13%
MC Mixed
Avg. Multi Core Mixed Speed
646 Pts 741 Pts Slightly faster multi-core speed.
+15%
SC Mixed
OC Single Core Mixed Speed
138 Pts 155 Pts Slightly faster OC single-core speed.
+12%
QC Mixed
OC Quad Core Mixed Speed
515 Pts 566 Pts Slightly faster OC quad-core speed.
+10%
MC Mixed
OC Multi Core Mixed Speed
727 Pts 826 Pts Slightly faster OC multi-core speed.
+14%
Market Share
Based on 8,459,024 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.47 % 2.53 % Much higher market share.
+72%
Value
Value For Money
83.1 % 99.9 % Better value.
+20%
User Rating
UBM User Rating
101 % 134 % Much more popular.
+33%
Price
Price (score)
$344 $290 Cheaper.
+16%
Age
Newest
46 Months 15 Months Much more recent.
+67%
TDP
Thermal Design Power (TDP)
88 Watts +3% 91 Watts
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
4 GHz 4.2 GHz +5%
Turbo Clock
Turbo Clock Speed
4.4 GHz 4.5 GHz +2%
SC Int
Single Core Integer Speed
138 Pts 152 Pts Slightly faster single-core int speed.
+10%
SC Float
Single Core Floating Point Speed
138 Pts 159 Pts Faster single-core fp speed.
+15%
QC Int
Quad Core Integer Speed
510 Pts 548 Pts Slightly faster quad-core int speed.
+7%
QC Float
Quad Core Floating Point Speed
508 Pts 581 Pts Slightly faster quad-core fp speed.
+14%
MC Int
Multi Core Integer Speed
688 Pts 761 Pts Slightly faster multi-core int speed.
+11%
MC Float
Multi Core Floating Point Speed
737 Pts 873 Pts Faster multi-core fp speed.
+18%
Series
CPU Architecture
Haswell (2013) Kaby Lake (2017)
Socket
Motherboard Socket
FCLGA1150 FCLGA1151
Graphics
Integrated Graphics
HD 4600 HD 630
Launch Date
Launch Date
Q2'14 Q1'17
Cache
Cache
8 MB SmartCache 8 MB
Lithography
Lithography
22 nm 14 nm
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
PCG 2013D PCG 2015D (130W)
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4600 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350 MHz 350.00 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.25 GHz 1.15 GHz
Graphics Video Max Memory
Graphics Video Max Memory
2 GB 64 GB
TSX-NI
Intel® TSX-NI
No Yes

More specs » More specs »
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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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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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Processor Rankings (Price vs Performance) April 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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 i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $90
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $300Samsung 850 Evo 500GB $137
AMD Ryzen 5 1600 $176AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $193SanDisk Ultra Fit 32GB $12
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