IntelBX80623I52500K
$246
IntelBX80684I78700K
 $246 

4 Cores, 4 Threads @3.3GHz, Sandy Bridge.
Release date: Q1 2011.

6 Cores, 12 Threads @3.7GHz, Coffee Lake.
Release date: Q4 2017.

Real World Speed
Performance profile from 238,312 user samples
74,008 User Benchmarks
Best Bench: 90% Base clock 3.3 GHz
Worst Bench: 50% Base clock 3.6 GHz, turbo 0.8 GHz (avg)
Poor: 50% Great: 90%
SPEED RANK: 131st / 1137
Gaming
Gaming 71%
Battleship
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 43%
Speed boat
164,304 User Benchmarks
Best Bench: 125% Base clock 3.7 GHz, turbo 5.5 GHz (avg)
Worst Bench: 92% Base clock 3.7 GHz, turbo 1.3 GHz (avg)
Poor: 92% Great: 125%
SPEED RANK: 13th / 1137
Gaming
Gaming 108%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 96%
Nuclear submarine
Effective Speed
Effective CPU Speed
70.6 % 108 % Much faster effective speed.
+53%
SC Mixed
Avg. Single Core Mixed Speed
97.6 Pts 137 Pts Much faster single-core speed.
+40%
QC Mixed
Avg. Quad Core Mixed Speed
365 Pts 522 Pts Much faster quad-core speed.
+43%
MC Mixed
Avg. Multi Core Mixed Speed
372 Pts 1085 Pts Hugely faster multi-core speed.
+192%
SC Mixed
OC Single Core Mixed Speed
121 Pts 155 Pts Faster OC single-core speed.
+28%
QC Mixed
OC Quad Core Mixed Speed
471 Pts 614 Pts Much faster OC quad-core speed.
+30%
MC Mixed
OC Multi Core Mixed Speed
472 Pts 1250 Pts Hugely faster OC multi-core speed.
+165%
Market Share
Based on 12,236,413 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.68 % 3.61 % Hugely higher market share.
+431%
Value
Value For Money
75.2 % 102 % Much better value.
+35%
User Rating
UBM User Rating
70 % 156 % Hugely more popular.
+123%
Price
Price (score)
$246 Cheaper.
+27%
$340
Age
Newest
94 Months 13 Months Hugely more recent.
+86%
TDP
Thermal Design Power (TDP)
95 Watts 95 Watts
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
4 threads 12 threads Hugely higher thread count.
+200%
Lithography
Manufacturing process
32 nm 14 nm Much newer manufacturing.
+56%
Base Clock
Base Clock Speed
3.3 GHz 3.7 GHz Slightly faster base frequency.
+12%
Turbo Clock
Turbo Clock Speed
3.7 GHz 4.7 GHz Faster turbo frequency.
+27%
SC Int
Single Core Integer Speed
121 Pts 151 Pts Faster single-core int speed.
+25%
SC Float
Single Core Floating Point Speed
122 Pts 160 Pts Much faster single-core fp speed.
+31%
QC Int
Quad Core Integer Speed
472 Pts 596 Pts Faster quad-core int speed.
+26%
QC Float
Quad Core Floating Point Speed
475 Pts 635 Pts Much faster quad-core fp speed.
+34%
MC Int
Multi Core Integer Speed
474 Pts 1144 Pts Hugely faster multi-core int speed.
+141%
MC Float
Multi Core Floating Point Speed
473 Pts 1321 Pts Hugely faster multi-core fp speed.
+179%
Series
CPU Architecture
Sandy Bridge Coffee Lake
Socket
Motherboard Socket
LGA1155 FCLGA1151
Graphics
Integrated Graphics
HD 3000 UHD 630
Launch Date
Launch Date
Q1'11 Q4'17
Cache
Cache
6 MB SmartCache 12 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX2
Lithography
Lithography
32 nm 14 nm
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 DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 3000 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
850 MHz 350 MHz
# of Displays Supported
# of Displays Supported ‡
2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.1 GHz 1.20 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
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
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 i7-8700K is Intel’s latest, top of the range, 8th generation Coffee Lake processor. Like Kaby Lake and Sky Lake before that, Coffee Lake is based on Intel’s 14nm architecture which has been slightly optimized on each iteration. Following AMD’s modus operandi, Intel has upped the cores and threads across the range of their CPUs. In previous generations, a 6-core processor would have been a high-end desk-top (HEDT) processor, however the i7-8700K is the first Intel CPU with 6 cores and 12 threads to be classified (and priced) as a mainstream consumer processor. Specifically, the i7-8700K features a base clock speed of 3.7 GHz which boosts to 4.7 GHz (4.5 GHz for the previous generation i7-7700k), 12MB of smart (L3) cache and 2 channels of DDR4 RAM. The majority of the performance improvements over the 7th generation stem from the higher core count which results in a 50% increase in multi-core speed between the i7-7700k and i7-8700k. A new motherboard will need to be factored into the budget when upgrading to the 8700K as it requires a new Intel Z370 chipset which has supposedly been designed to better deliver power to CPUs with a greater number of cores. Also available in this latest release of CPUs is the 6 core 6 thread i5-8600k which is a more rational option (around $100 cheaper) for the vast majority of users that don’t require hyper-threading. Sandy bridge owners can finally justify an upgrade but with the next iteration of AMD's Zen architecture just around the corner the CPU market will be a lot faster moving now that Intel, once again, has to compete. [Sep '17 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) November 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.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

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CPUGPUSSD
Intel Core i7-8700K $359Nvidia GTX 1070 $330Samsung 850 Evo 250GB $77
AMD Ryzen 5 1600 $130Nvidia GTX 1060-6GB $220Samsung 850 Evo 500GB $100
Intel Core i5-8600K $237AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $12
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