IntelBX80623I52500K
$246
IntelBX80646I74790K
 $246 

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

Real World Speed
Performance profile from 172,368 user samples
49,931 User Benchmarks
Best Bench: 89% Base clock 3.3 GHz, turbo 5 GHz (avg)
Worst Bench: 53% Base clock 3.3 GHz, turbo 1.05 GHz (avg)
Poor: 53% Great: 89%
SPEED RANK: 98th / 985
Gaming
Gaming 71%
Battleship
Desktop
Desktop 70%
Battle cruiser
Workstation
Workstation 43%
Speed boat
122,437 User Benchmarks
Best Bench: 100% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 75% Base clock 4 GHz, turbo 0.7 GHz (avg)
Poor: 75% Great: 100%
SPEED RANK: 32nd / 985
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 64%
Destroyer
Effective Speed
Effective CPU Speed
71.3 % 88 % Faster effective speed.
+23%
SC Mixed
Avg. Single Core Mixed Speed
98.5 Pts 125 Pts Faster single-core speed.
+27%
QC Mixed
Avg. Quad Core Mixed Speed
369 Pts 430 Pts Faster quad-core speed.
+17%
MC Mixed
Avg. Multi Core Mixed Speed
378 Pts 643 Pts Much faster multi-core speed.
+70%
SC Mixed
OC Single Core Mixed Speed
119 Pts 138 Pts Faster OC single-core speed.
+16%
QC Mixed
OC Quad Core Mixed Speed
472 Pts 509 Pts Slightly faster OC quad-core speed.
+8%
MC Mixed
OC Multi Core Mixed Speed
475 Pts 722 Pts Much faster OC multi-core speed.
+52%
Market Share
Based on 7,407,496 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.7 % 1.47 % Hugely higher market share.
+110%
Value
Value For Money
75.9 % 80.8 % Slightly better value.
+6%
User Rating
UBM User Rating
82 % 101 % More popular.
+23%
Price
Price (score)
$246 Much cheaper.
+33%
$366
Age
Newest
85 Months 44 Months Much more recent.
+48%
TDP
Thermal Design Power (TDP)
95 Watts 88 Watts Slightly more energy efficient.
+7%
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
4 threads 8 threads Hugely higher thread count.
+100%
Lithography
Manufacturing process
32 nm 22 nm Much newer manufacturing.
+31%
Base Clock
Base Clock Speed
3.3 GHz 4 GHz Faster base frequency.
+21%
Turbo Clock
Turbo Clock Speed
3.7 GHz 4.4 GHz Faster turbo frequency.
+19%
SC Int
Single Core Integer Speed
119 Pts 137 Pts Faster single-core int speed.
+15%
SC Float
Single Core Floating Point Speed
120 Pts 138 Pts Faster single-core fp speed.
+15%
QC Int
Quad Core Integer Speed
472 Pts 510 Pts Slightly faster quad-core int speed.
+8%
QC Float
Quad Core Floating Point Speed
473 Pts 516 Pts Slightly faster quad-core fp speed.
+9%
MC Int
Multi Core Integer Speed
473 Pts 690 Pts Much faster multi-core int speed.
+46%
MC Float
Multi Core Floating Point Speed
475 Pts 733 Pts Much faster multi-core fp speed.
+54%
Series
CPU Architecture
Sandy Bridge (2011) Haswell (2013)
Socket
Motherboard Socket
LGA1155 FCLGA1150
Graphics
Integrated Graphics
HD 3000 HD 4600
Launch Date
Launch Date
Q1'11 Q2'14
Cache
Cache
6 MB SmartCache 8 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX 2.0
Lithography
Lithography
32 nm 22 nm
Recommended Price
Recommended Customer Price
N/A $339.00 - $350.00
Bus Speed
Bus Speed
5 GT/s DMI 5 GT/s DMI2
Memory Types
Memory Types
DDR3 1066/1333 DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Memory Bandwidth
Max Memory Bandwidth
21 GB/s 25.6 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 3000 Intel® HD Graphics 4600
Graphics Base Frequency
Graphics Base Frequency
850 MHz 350 MHz
Wireless Display
Intel® Wireless Display
No Yes
# of Displays Supported
# of Displays Supported ‡
2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.1 GHz 1.25 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes
PCI Express Revision
PCI Express Revision
2.0 3.0

More specs » More specs »
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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

The Intel Core i7-4790K, codenamed Devil's Canyon, is an upgraded 4770K, Intel's current flagship i7. The 4790K features an improved thermal interface which enables it to dissipate heat more efficiently than the 4770K. Comparing the 4770K and 4790K shows that stock performance has improved by 13% which is consistent with the base clock jump from 3.5 GHz to 4.0 GHz. OC performance remains unchanged. Comparing the 4790K and 4790 shows that at stock clocks the 4790K is around 16% faster which considering the small price difference makes the 4790K a far better choice. Previously Intel targeted the unlocked K versions at overclockers but with Devil's Canyon they have included VT-d on the K chip and this time it's squarely aimed at both power users and overclockers alike. Until the release of Broadwell in six months, the 4790K is the high end CPU of choice. [Jul '14 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) February 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.

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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 $430Samsung 850 Evo 250GB $87
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $140
HDDRAMUSB
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Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $200SanDisk Extreme 16GB $18
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