IntelBX80623I52500K
$246
IntelBX80677I77700K
 $246 

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

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

Real World Speed
Performance profile from 114,347 user samples
36,709 User Benchmarks
Best Bench: 90% Base clock 3.3 GHz, turbo 5 GHz (avg)
Worst Bench: 53% Base clock 3.3 GHz, turbo 0.85 GHz (avg)
Poor: 53% Great: 90%
SPEED RANK: 86th / 971
Gaming
Gaming 72%
Battleship
Desktop
Desktop 70%
Battleship
Workstation
Workstation 44%
Speed boat
77,638 User Benchmarks
Best Bench: 113% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 87% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 87% Great: 113%
SPEED RANK: 7th / 971
Gaming
Gaming 100%
Nuclear submarine
Desktop
Desktop 100%
Nuclear submarine
Workstation
Workstation 73%
Battleship
Effective Speed
Effective CPU Speed
71.9 % -39% 99.7 % Much faster effective speed.
+39%
SC Mixed
Avg. Single Core Mixed Speed
99.8 Pts -39% 139 Pts Much faster single-core speed.
+39%
QC Mixed
Avg. Quad Core Mixed Speed
371 Pts -32% 491 Pts Much faster quad-core speed.
+32%
MC Mixed
Avg. Multi Core Mixed Speed
381 Pts -94% 738 Pts Hugely faster multi-core speed.
+94%
SC Mixed
OC Single Core Mixed Speed
121 Pts -27% 154 Pts Faster OC single-core speed.
+27%
QC Mixed
OC Quad Core Mixed Speed
474 Pts -20% 568 Pts Faster OC quad-core speed.
+20%
MC Mixed
OC Multi Core Mixed Speed
476 Pts -74% 829 Pts Much faster OC multi-core speed.
+74%
Market Share
Based on 5,138,009 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.9 % -373% 4.26 % Hugely higher market share.
+373%
Value
Value For Money
76.5 % -30% 99.3 % Better value.
+30%
User Rating
UBM User Rating
81 % -94% 157 % Hugely more popular.
+94%
Price
Price (score)
$246 Cheaper.
+16%
$295 -16%
Age
Newest
80 Months -90% 8 Months Hugely more recent.
+90%
TDP
Thermal Design Power (TDP)
95 Watts -4% 91 Watts +4%
Cores
CPU Processing Cores
4 cores 0% 4 cores 0%
Threads
CPU Processing Threads
4 threads -100% 8 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process
32 nm -56% 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.3 GHz -27% 4.2 GHz Faster base frequency.
+27%
Turbo Clock
Turbo Clock Speed
3.7 GHz -22% 4.5 GHz Faster turbo frequency.
+22%
SC Int
Single Core Integer Speed
122 Pts -23% 150 Pts Faster single-core int speed.
+23%
SC Float
Single Core Floating Point Speed
121 Pts -31% 158 Pts Much faster single-core fp speed.
+31%
QC Int
Quad Core Integer Speed
476 Pts -17% 556 Pts Faster quad-core int speed.
+17%
QC Float
Quad Core Floating Point Speed
474 Pts -25% 591 Pts Faster quad-core fp speed.
+25%
MC Int
Multi Core Integer Speed
479 Pts -59% 764 Pts Much faster multi-core int speed.
+59%
MC Float
Multi Core Floating Point Speed
476 Pts -83% 872 Pts Hugely faster multi-core fp speed.
+83%
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
6 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
1.1 GHz 1.15 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
PCI Express Revision
PCI Express Revision
2.0 3.0

More specs » More specs »
ADVERTISEMENT

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

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) September 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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-7700K $295Nvidia GTX 1070 $410Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $270AMD RX 480 $350Samsung 850 Pro 256GB $120
Intel Core i5-7600K $210Nvidia GTX 1060-6GB $265Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $724SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $152SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $56HyperX Fury DDR4 2133 C14 2x8GB $141SanDisk Extreme 16GB $20
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback