IntelBX80662G4400
IntelBX80677I77700K

2 Cores, 2 Threads @3.3GHz, Skylake.
Release date: Q4 2015.

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

Real World Speed
Performance profile from 621,486 user samples
33,476 User Benchmarks
Best Bench: 62% Base clock 3.3 GHz
Worst Bench: 44% Base clock 3.3 GHz, turbo 3.3 GHz (avg)
Poor: 44% Great: 62%
SPEED RANK: 640th / 1323
Gaming
Gaming 54%
Yacht
Desktop
Desktop 67%
Battle cruiser
Workstation
Workstation 38%
Jet ski
588,010 User Benchmarks
Best Bench: 95% Base clock 4.2 GHz
Worst Bench: 75% Base clock 4.2 GHz, turbo 2.15 GHz (avg)
Poor: 75% Great: 95%
SPEED RANK: 78th / 1323
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 91%
Nuclear submarine
Workstation
Workstation 73%
Battleship
Effective Speed
Effective CPU Speed
54.1 % 86.7 % Much faster effective speed.
+60%
Memory
Avg. Memory Latency
78.1 Pts 90.7 Pts Lower memory latency.
+16%
1-Core
Avg. Single Core Mixed Speed
92.3 Pts 131 Pts Much faster single-core speed.
+42%
2-Core
Avg. Dual Core Mixed Speed
174 Pts 251 Pts Much faster dual-core speed.
+44%
4-Core
Avg. Quad Core Mixed Speed
177 Pts 447 Pts Hugely faster quad-core speed.
+153%
8-Core
Avg. Octa Core Mixed Speed
179 Pts 690 Pts Hugely faster octa-core speed.
+285%
Memory
OC Memory Latency
91.1 Pts 96.7 Pts Slightly lower OC memory latency.
+6%
1-Core
OC Single Core Mixed Speed
102 Pts 146 Pts Much faster OC single-core speed.
+43%
2-Core
OC Dual Core Mixed Speed
200 Pts 285 Pts Much faster OC dual-core speed.
+42%
4-Core
OC Quad Core Mixed Speed
201 Pts 523 Pts Hugely faster OC quad-core speed.
+160%
8-Core
OC Octa Core Mixed Speed
201 Pts 790 Pts Hugely faster OC octa-core speed.
+293%
Market Share
Based on 48,476,707 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.05 % 1.01 % Insanely higher market share.
+1,920%
Value
Value For Money
64.7 % 79.6 % Better value.
+23%
User Rating
UBM User Rating
53 % 82 % Much more popular.
+55%
Price
Price (score)
$145 Much cheaper.
+62%
$379
Age
Newest
74 Months 59 Months More recent.
+20%
TDP
Thermal Design Power (TDP)
47 Watts Much more energy efficient.
+48%
91 Watts
Cores
CPU Processing Cores
2 cores 4 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
2 threads 8 threads Hugely higher thread count.
+300%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.3 GHz 4.2 GHz Faster base frequency.
+27%
Turbo Clock
Turbo Clock Speed
3.3 GHz 4.5 GHz Much faster turbo frequency.
+36%
64-Core
OC Multi Core Mixed Speed
202 Pts 789 Pts Hugely faster OC 64-core speed.
+291%
64-Core
Avg. Multi Core Mixed Speed
180 Pts 695 Pts Hugely faster 64-core speed.
+286%
Series
CPU Architecture
Skylake Kaby Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 510 HD 630
Launch Date
Launch Date
Q3'15 Q1'17
Cache
Cache
3 MB SmartCache 8 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2 SSE4.1/4.2, AVX 2.0
Embedded Options Available
Embedded Options Available
Yes No
Recommended Price
Recommended Customer Price
$64.00 $339.00 - $350.00
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) PCG 2015D (130W)
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
ECC Memory Supported
ECC Memory Supported ‡
Yes No
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 510 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350 MHz 350.00 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1 GHz 1.15 GHz
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
No 2.0
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
TSX-NI
Intel® TSX-NI
No Yes
OS Guard
Intel® OS Guard
No Yes

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]

MORE DETAILS

Processor Rankings (Price vs Performance) December 2021 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. 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.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.

 Frequently Asked Questions

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