IntelBX80623I72600K
IntelBX80677I77700K

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

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

Real World Speed
Performance profile from 204,420 user samples
48,372 User Benchmarks
Best Bench: 89% Base clock 3.4 GHz, turbo 5 GHz (avg)
Worst Bench: 56% Base clock 3.4 GHz
Poor: 56% Great: 89%
SPEED RANK: 125th / 1100
Gaming
Gaming 70%
Battleship
Desktop
Desktop 72%
Battleship
Workstation
Workstation 51%
Yacht
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: 17th / 1100
Gaming
Gaming 100%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
Effective Speed
Effective CPU Speed
70.4 % 99.7 % Much faster effective speed.
+42%
SC Mixed
Avg. Single Core Mixed Speed
101 Pts 140 Pts Much faster single-core speed.
+39%
QC Mixed
Avg. Quad Core Mixed Speed
344 Pts 489 Pts Much faster quad-core speed.
+42%
MC Mixed
Avg. Multi Core Mixed Speed
502 Pts 741 Pts Much faster multi-core speed.
+48%
SC Mixed
OC Single Core Mixed Speed
121 Pts 155 Pts Faster OC single-core speed.
+28%
QC Mixed
OC Quad Core Mixed Speed
446 Pts 566 Pts Faster OC quad-core speed.
+27%
MC Mixed
OC Multi Core Mixed Speed
619 Pts 826 Pts Much faster OC multi-core speed.
+33%
Market Share
Based on 8,478,716 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.56 % 2.53 % Hugely higher market share.
+352%
Value
Value For Money
65 % 99.9 % Much better value.
+54%
User Rating
UBM User Rating
73 % 134 % Hugely more popular.
+84%
Price
Price (score)
$361 $290 Cheaper.
+20%
Age
Newest
87 Months 15 Months Hugely more recent.
+83%
TDP
Thermal Design Power (TDP)
95 Watts 91 Watts +4%
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
32 nm 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.4 GHz 4.2 GHz Faster base frequency.
+24%
Turbo Clock
Turbo Clock Speed
3.8 GHz 4.5 GHz Faster turbo frequency.
+18%
SC Int
Single Core Integer Speed
121 Pts 152 Pts Faster single-core int speed.
+26%
SC Float
Single Core Floating Point Speed
122 Pts 159 Pts Much faster single-core fp speed.
+30%
QC Int
Quad Core Integer Speed
445 Pts 548 Pts Faster quad-core int speed.
+23%
QC Float
Quad Core Floating Point Speed
455 Pts 581 Pts Faster quad-core fp speed.
+28%
MC Int
Multi Core Integer Speed
600 Pts 761 Pts Faster multi-core int speed.
+27%
MC Float
Multi Core Floating Point Speed
617 Pts 873 Pts Much faster multi-core fp speed.
+41%
Series
CPU Architecture
Sandy Bridge (2011) Kaby Lake (2017)
Socket
Motherboard Socket
LGA1155 FCLGA1151
Graphics
Integrated Graphics
HD 3000 HD 630
Launch Date
Launch Date
Q1'11 Q1'17
Cache
Cache
8 MB SmartCache 8 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX 2.0
Lithography
Lithography
32 nm 14 nm
Recommended Price
Recommended Customer Price
N/A $339.00 - $350.00
Bus Speed
Bus Speed
5 GT/s DMI 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1066/1333 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 3000 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
850 MHz 350.00 MHz
# of Displays Supported
# of Displays Supported ‡
2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.35 GHz 1.15 GHz
PCI Express Revision
PCI Express Revision
2.0 3.0

More specs » More specs »
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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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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.

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 i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $90
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $290Samsung 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 Extreme 16GB $18
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