IntelBX80677I77700K
IntelBX80637I73770K

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

4 Cores, 8 Threads
@3.5GHz Ivy Bridge (2012)

Real World Speed
Performance profile from 199,691 user samples
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 / 1089
Gaming
Gaming 100%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
43,643 User Benchmarks
Best Bench: 89% Base clock 3.5 GHz
Worst Bench: 60% Base clock 3.5 GHz, turbo 1.6 GHz (avg)
Poor: 60% Great: 89%
SPEED RANK: 92nd / 1089
Gaming
Gaming 74%
Battleship
Desktop
Desktop 76%
Battleship
Workstation
Workstation 54%
Yacht
Effective Speed
Effective CPU Speed
99.7 % Much faster effective speed.
+34%
74.5 %
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Much faster single-core speed.
+31%
107 Pts
QC Mixed
Avg. Quad Core Mixed Speed
489 Pts Much faster quad-core speed.
+35%
363 Pts
MC Mixed
Avg. Multi Core Mixed Speed
741 Pts Much faster multi-core speed.
+37%
539 Pts
SC Mixed
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+25%
124 Pts
QC Mixed
OC Quad Core Mixed Speed
566 Pts Faster OC quad-core speed.
+27%
447 Pts
MC Mixed
OC Multi Core Mixed Speed
826 Pts Faster OC multi-core speed.
+29%
638 Pts
Market Share
Based on 8,436,451 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.48 % Hugely higher market share.
+351%
0.55 %
Value
Value For Money
99.9 % Much better value.
+68%
59.6 %
User Rating
UBM User Rating
133 % Hugely more popular.
+87%
71 %
Price
Price (score)
$290 Much cheaper.
+45%
$529
Age
Newest
15 Months Much more recent.
+79%
72 Months
TDP
Thermal Design Power (TDP)
91 Watts 77 Watts More energy efficient.
+15%
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+20%
3.5 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+15%
3.9 GHz
SC Int
Single Core Integer Speed
152 Pts Faster single-core int speed.
+25%
122 Pts
SC Float
Single Core Floating Point Speed
159 Pts Faster single-core fp speed.
+26%
126 Pts
QC Int
Quad Core Integer Speed
548 Pts Faster quad-core int speed.
+22%
449 Pts
QC Float
Quad Core Floating Point Speed
581 Pts Faster quad-core fp speed.
+26%
462 Pts
MC Int
Multi Core Integer Speed
761 Pts Faster multi-core int speed.
+21%
627 Pts
MC Float
Multi Core Floating Point Speed
873 Pts Much faster multi-core fp speed.
+39%
630 Pts
Series
CPU Architecture
Kaby Lake (2017) Ivy Bridge (2012)
Socket
Motherboard Socket
FCLGA1151 FCLGA1155
Graphics
Integrated Graphics
HD 630 HD 4000
Launch Date
Launch Date
Q1'17 Q2'12
Cache
Cache
8 MB 8 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $332.00 - $342.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) 2011D
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
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD Graphics 4000
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 650 MHz
TSX-NI
Intel® TSX-NI
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 up to 1x16, 2x8, 1x8 & 2x4

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 third gen Ivy Bridge Core i7-3770K can't really be described as a consumer orientated processor. With 8 threads and four cores its capabilities are better aligned to server use. For price insensitive consumers that want the best of the best, this is currently one of the fastest processors available. The PassMark Single Thread score of 2080 points put the 3770K right at the top of the pack in terms of raw processing power and real world performance. The GeekBench and PassMark scores of 17210 and 9653 are within 20% or so of the best we have ever seen. Despite the near record breaking processing throughputs the 3770K is only rated at 77 TDP, which is also very reasonable by historical standards. For typical consumer use there are better value propositions out there. [May '13 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.

 Frequently Asked Questions

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CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $80
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $300Samsung 850 Evo 500GB $137
AMD Ryzen 5 1600 $170AMD RX 480 $350Samsung 850 Pro 256GB $158
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $45
Seagate Barracuda 2TB (2016) $36Corsair Vengeance LPX DDR4 3200 C16 2x8GB $195SanDisk Ultra Fit 32GB $12
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