IntelBX80677I77700K
IntelBX80623I52500K
$246

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

 $246 

4 Cores, 4 Threads
@3.3GHz Sandy Bridge (2011)

Real World Speed
Performance profile from 87,426 user samples
50,729 User Benchmarks
Best Bench: 113% Base clock 4.2 GHz, turbo 5.05 GHz (avg)
Worst Bench: 90% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 90% Great: 113%
SPEED RANK: 4th / 966
Gaming
Gaming 101%
UFO
Desktop
Desktop 101%
UFO
Workstation
Workstation 74%
Battleship
36,697 User Benchmarks
Best Bench: 91% Base clock 3.3 GHz, turbo 5.2 GHz (avg)
Worst Bench: 53% Base clock 3.3 GHz, turbo 0.55 GHz (avg)
Poor: 53% Great: 91%
SPEED RANK: 83rd / 966
Gaming
Gaming 72%
Battleship
Desktop
Desktop 70%
Battleship
Workstation
Workstation 43%
Speed boat
Effective Speed
Effective CPU Speed
101 % Much faster effective speed.
+41%
71.6 % -41%
SC Mixed
Avg. Single Core Mixed Speed
140 Pts Much faster single-core speed.
+41%
99.2 Pts -41%
QC Mixed
Avg. Quad Core Mixed Speed
497 Pts Much faster quad-core speed.
+34%
370 Pts -34%
MC Mixed
Avg. Multi Core Mixed Speed
749 Pts Hugely faster multi-core speed.
+98%
379 Pts -98%
SC Mixed
OC Single Core Mixed Speed
155 Pts Faster OC single-core speed.
+27%
122 Pts -27%
QC Mixed
OC Quad Core Mixed Speed
571 Pts Faster OC quad-core speed.
+19%
479 Pts -19%
MC Mixed
OC Multi Core Mixed Speed
833 Pts Much faster OC multi-core speed.
+75%
477 Pts -75%
Market Share
Based on 4,396,041 CPUs tested.
Market Share
Market Share (trailing 30 days)
3.75 % Hugely higher market share.
+428%
0.71 % -428%
Value
Value For Money
100 % Much better value.
+32%
76.2 % -32%
User Rating
UBM User Rating
150 % Hugely more popular.
+88%
80 % -88%
Price
Price (score)
$295 -16% $246 Cheaper.
+16%
Age
Newest
6 Months Hugely more recent.
+92%
78 Months -92%
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 Hugely higher thread count.
+100%
4 threads -100%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm -56%
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
+27%
3.3 GHz -27%
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
+22%
3.7 GHz -22%
SC Int
Single Core Integer Speed
151 Pts Faster single-core int speed.
+24%
122 Pts -24%
SC Float
Single Core Floating Point Speed
159 Pts Much faster single-core fp speed.
+30%
122 Pts -30%
QC Int
Quad Core Integer Speed
555 Pts Faster quad-core int speed.
+15%
481 Pts -15%
QC Float
Quad Core Floating Point Speed
589 Pts Faster quad-core fp speed.
+23%
479 Pts -23%
MC Int
Multi Core Integer Speed
773 Pts Much faster multi-core int speed.
+61%
480 Pts -61%
MC Float
Multi Core Floating Point Speed
876 Pts Hugely faster multi-core fp speed.
+82%
482 Pts -82%
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 6 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 1.1 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
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 i5-2500K is a second generation Sandy Bridge processor which is currently two generations old and nearly three years out of date. The many users that had the good sense to purchase this processor should feel in no hurry to upgrade as it's still no slouch, even by today's standards. The benchmark figures indicate that, even at stock clock rates, in terms of real-world performance this processor is approximately 20% slower than the best currently available, not bad considering its age. Given that the 2500K has an unlocked multiplier upping its performance by 10% with stock cooling should not pose much of a problem for the majority of owners. Here is a detailed performance comparison of the 2500K vs 4670K.  [Jul '13 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) July 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.

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CPUGPUSSD
Intel Core i7-7700K $295Nvidia GTX 1070 $380Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $268AMD RX 480 $260Samsung 850 Pro 256GB $136
Intel Core i5-7600K $238Nvidia GTX 1060-6GB $239Samsung 850 Evo 500GB $159
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $714SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $83Corsair Vengeance LPX DDR4 3000 C15 2x8GB $132SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $44HyperX Fury DDR4 2133 C14 2x8GB $131SanDisk Ultra Fit 32GB $13
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