IntelBX80677I77700K
IntelBX80646I34130

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

2 Cores, 4 Threads @3.4GHz, Haswell.
Release date: Q3 2013.

Real World Speed
Performance profile from 314,630 user samples
292,842 User Benchmarks
Best Bench: 111% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 80% Base clock 4.2 GHz, turbo 2.25 GHz (avg)
Poor: 80% Great: 111%
SPEED RANK: 39th / 1173
Gaming
Gaming 96%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 70%
Battleship
21,788 User Benchmarks
Best Bench: 57% Base clock 3.4 GHz, turbo 3.4 GHz (avg)
Worst Bench: 37% Base clock 3.4 GHz, turbo 1.1 GHz (avg)
Poor: 37% Great: 57%
SPEED RANK: 347th / 1173
Gaming
Gaming 52%
Yacht
Desktop
Desktop 59%
Gunboat
Workstation
Workstation 31%
Sail boat
Effective Speed
Effective CPU Speed
96.1 % Hugely faster effective speed.
+86%
51.7 %
SC Mixed
Avg. Single Core Mixed Speed
136 Pts Much faster single-core speed.
+49%
91 Pts
QC Mixed
Avg. Quad Core Mixed Speed
470 Pts Hugely faster quad-core speed.
+98%
237 Pts
MC Mixed
Avg. Multi Core Mixed Speed
705 Pts Hugely faster multi-core speed.
+188%
245 Pts
SC Mixed
OC Single Core Mixed Speed
152 Pts Much faster OC single-core speed.
+50%
101 Pts
QC Mixed
OC Quad Core Mixed Speed
566 Pts Hugely faster OC quad-core speed.
+114%
265 Pts
MC Mixed
OC Multi Core Mixed Speed
806 Pts Hugely faster OC multi-core speed.
+202%
267 Pts
Market Share
Based on 18,569,083 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.56 % Insanely higher market share.
+1,014%
0.14 %
Value
Value For Money
89.8 % Much better value.
+35%
66.4 %
User Rating
UBM User Rating
129 % Hugely more popular.
+130%
56 %
Price
Price (score)
$349 $150 Much cheaper.
+57%
Age
Newest
30 Months Much more recent.
+57%
70 Months
TDP
Thermal Design Power (TDP)
91 Watts 54 Watts Much more energy efficient.
+41%
Cores
CPU Processing Cores
4 cores Hugely higher core count.
+100%
2 cores
Threads
CPU Processing Threads
8 threads Hugely higher thread count.
+100%
4 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+24%
3.4 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Much faster turbo frequency.
+32%
3.4 GHz
SC Int
Single Core Integer Speed
148 Pts Much faster single-core int speed.
+48%
100 Pts
SC Float
Single Core Floating Point Speed
157 Pts Much faster single-core fp speed.
+54%
102 Pts
QC Int
Quad Core Integer Speed
546 Pts Hugely faster quad-core int speed.
+117%
252 Pts
QC Float
Quad Core Floating Point Speed
584 Pts Hugely faster quad-core fp speed.
+116%
270 Pts
MC Int
Multi Core Integer Speed
730 Pts Hugely faster multi-core int speed.
+190%
252 Pts
MC Float
Multi Core Floating Point Speed
861 Pts Hugely faster multi-core fp speed.
+219%
270 Pts
Series
CPU Architecture
Kaby Lake Haswell
Socket
Motherboard Socket
FCLGA1151 FCLGA1150
Graphics
Integrated Graphics
HD 630 HD 4400
Launch Date
Launch Date
Q1'17 Q3'13
Cache
Cache
8 MB 3 MB SmartCache
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $117.00
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI2
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2013C
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
ECC Memory Supported
ECC Memory Supported ‡
No Yes
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD graphics 4400
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz
Graphics Video Max Memory
Graphics Video Max Memory
64 GB 2 GB
Turbo Boost Tech
Intel® Turbo Boost Technology
2.0 No
TSX-NI
Intel® TSX-NI
Yes No
PCI Express Revision
PCI Express Revision
3.0 Up to 3.0

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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From the point of view of a consumer that typically uses a PC for surfing the web, checking email, listening to music and watching videos, I consider that the Haswell i3 processors currently represent the best value for money. The i3-4130 has a performance profile that is just 7% below the top nine group leader average yet it only costs half as much. Power users that play intensive 3d games or run video editing, graphics design or CAD packages will benefit from more than two cores and will do well to look elsewhere but for regular users overall responsiveness will remain largely unchanged regardless of how much more is spent on the CPU. (My new value pick is the G3420 which supersedes my recommendation of the i3-4130.) [Sep '13 CPUPro]

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Processor Rankings (Price vs Performance) July 2019 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.
  • 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.
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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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  • - CPU tests include: integer, floating and string.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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