IntelBX80677I77700K
IntelBX80623I72600K

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

4 Cores, 8 Threads
@3.4GHz Sandy Bridge (2011)

Real World Speed
Performance profile from 124,633 user samples
90,944 User Benchmarks
Best Bench: 111% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 85% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 85% Great: 111%
SPEED RANK: 15th / 980
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 73%
Battleship
33,689 User Benchmarks
Best Bench: 87% Base clock 4.6 GHz
Worst Bench: 55% Base clock 3.4 GHz, turbo 1.35 GHz (avg)
Poor: 55% Great: 87%
SPEED RANK: 112th / 980
Gaming
Gaming 70%
Battle cruiser
Desktop
Desktop 71%
Battleship
Workstation
Workstation 50%
Yacht
Effective Speed
Effective CPU Speed
98.4 % Much faster effective speed.
+41%
69.7 % -41%
SC Mixed
Avg. Single Core Mixed Speed
138 Pts Much faster single-core speed.
+38%
100 Pts -38%
QC Mixed
Avg. Quad Core Mixed Speed
483 Pts Much faster quad-core speed.
+42%
340 Pts -42%
MC Mixed
Avg. Multi Core Mixed Speed
731 Pts Much faster multi-core speed.
+47%
498 Pts -47%
SC Mixed
OC Single Core Mixed Speed
154 Pts Faster OC single-core speed.
+29%
119 Pts -29%
QC Mixed
OC Quad Core Mixed Speed
562 Pts Faster OC quad-core speed.
+27%
444 Pts -27%
MC Mixed
OC Multi Core Mixed Speed
819 Pts Much faster OC multi-core speed.
+34%
611 Pts -34%
Market Share
Based on 5,966,171 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.51 % Hugely higher market share.
+356%
0.77 % -356%
Value
Value For Money
99.9 % Better value.
+21%
82.8 % -21%
User Rating
UBM User Rating
163 % Hugely more popular.
+126%
72 % -126%
Price
Price (score)
$280 -34% $184 Much cheaper.
+34%
Age
Newest
10 Months Hugely more recent.
+88%
82 Months -88%
TDP
Thermal Design Power (TDP)
91 Watts +4% 95 Watts -4%
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.
+56%
32 nm -56%
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+24%
3.4 GHz -24%
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+18%
3.8 GHz -18%
SC Int
Single Core Integer Speed
151 Pts Faster single-core int speed.
+27%
119 Pts -27%
SC Float
Single Core Floating Point Speed
158 Pts Much faster single-core fp speed.
+32%
120 Pts -32%
QC Int
Quad Core Integer Speed
547 Pts Faster quad-core int speed.
+24%
442 Pts -24%
QC Float
Quad Core Floating Point Speed
578 Pts Faster quad-core fp speed.
+28%
451 Pts -28%
MC Int
Multi Core Integer Speed
757 Pts Faster multi-core int speed.
+28%
591 Pts -28%
MC Float
Multi Core Floating Point Speed
864 Pts Much faster multi-core fp speed.
+42%
607 Pts -42%
Series
CPU Architecture
Kaby Lake (2017) Sandy Bridge (2011)
Socket
Motherboard Socket
FCLGA1151 LGA1155
Graphics
Integrated Graphics
HD 630 HD 3000
Launch Date
Launch Date
Q1'17 Q1'11
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 32 nm
Recommended Price
Recommended Customer Price
$339.00 - $350.00 N/A
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
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 1066/1333
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD Graphics 3000
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 850 MHz
# of Displays Supported
# of Displays Supported ‡
3 2
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.35 GHz
PCI Express Revision
PCI Express Revision
3.0 2.0

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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The i7-2600K Sandy Bridge processor is two generations old and nearly three years out of date. The numerous owners of this superb processor should feel in no hurry to upgrade as it's still one of the fastest consumer processors, even by today's standards. The benchmark figures indicate that in terms of real-world performance this processor is only 5% slower than the third generation Ivy Bridge i7-3770K, not bad considering its age. That said new buyers will find both better energy efficiency and marginal performance improvements elsewhere[Feb '12 CPUPro]

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Processor Rankings (Price vs Performance) November 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]

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 (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 i7-7700K $280Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $270AMD RX 480 $240Samsung 850 Evo 500GB $140
Intel Core i5-7600K $180Nvidia GTX 1060-6GB $260Samsung 850 Pro 256GB $110
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $192SanDisk Extreme 64GB $30
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $52Corsair Vengeance LPX DDR4 3200 C16 2x8GB $204SanDisk Ultra Fit 32GB $10
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