Real World Speed
Performance profile from 151,024 user samples
33,476 User Benchmarks
Best Bench: 105% Base clock 2.9 GHz, turbo 4.15 GHz (avg)
Worst Bench: 71% Base clock 3.3 GHz, turbo 1.25 GHz (avg)
Poor: 71% Great: 105%
SPEED RANK: 38th / 1059
Gaming 86%
Aircraft carrier
Desktop 83%
Aircraft carrier
Workstation 75%
117,548 User Benchmarks
Best Bench: 101% Base clock 4 GHz, turbo 5 GHz (avg)
Worst Bench: 72% Base clock 4 GHz, turbo 0.75 GHz (avg)
Poor: 72% Great: 101%
SPEED RANK: 34th / 1059
Gaming 88%
Aircraft carrier
Desktop 89%
Aircraft carrier
Workstation 64%
Effective Speed
Effective CPU Speed
85.9 % 87.7 % +2%
SC Mixed
Avg. Single Core Mixed Speed
108 Pts 125 Pts Faster single-core speed.
QC Mixed
Avg. Quad Core Mixed Speed
421 Pts 428 Pts +2%
MC Mixed
Avg. Multi Core Mixed Speed
847 Pts Much faster multi-core speed.
642 Pts
SC Mixed
OC Single Core Mixed Speed
132 Pts 139 Pts Slightly faster OC single-core speed.
QC Mixed
OC Quad Core Mixed Speed
519 Pts +1% 515 Pts
MC Mixed
OC Multi Core Mixed Speed
1033 Pts Much faster OC multi-core speed.
733 Pts
Market Share
Based on 7,963,408 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.39 % 1.43 % Hugely higher market share.
Value For Money
77 % 79.1 % +3%
User Rating
UBM User Rating
83 % 100 % More popular.
Price (score)
$391 $384 +2%
43 Months +4% 45 Months
Thermal Design Power (TDP)
140 Watts 88 Watts Much more energy efficient.
CPU Processing Cores
6 cores Much higher core count.
4 cores
CPU Processing Threads
12 threads Much higher thread count.
8 threads
Manufacturing process
22 nm 22 nm
Base Clock
Base Clock Speed
3.3 GHz 4 GHz Faster base frequency.
Turbo Clock
Turbo Clock Speed
3.6 GHz 4.4 GHz Faster turbo frequency.
SC Int
Single Core Integer Speed
131 Pts 139 Pts Slightly faster single-core int speed.
SC Float
Single Core Floating Point Speed
130 Pts 138 Pts Slightly faster single-core fp speed.
QC Int
Quad Core Integer Speed
517 Pts +1% 511 Pts
QC Float
Quad Core Floating Point Speed
517 Pts +1% 514 Pts
MC Int
Multi Core Integer Speed
977 Pts Much faster multi-core int speed.
698 Pts
MC Float
Multi Core Floating Point Speed
1046 Pts Much faster multi-core fp speed.
746 Pts
CPU Architecture
Haswell-E (2014) Haswell (2013)
Motherboard Socket
LGA2011-V3 FCLGA1150
Integrated Graphics
None HD 4600
Launch Date
Launch Date
Q3'14 Q2'14
15 MB SmartCache 8 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.2, AVX 2.0, AES SSE4.1/4.2, AVX 2.0
Recommended Price
Recommended Customer Price
$389.00 - $396.00 $339.00 - $350.00
Bus Speed
Bus Speed
0 GT/s 5 GT/s DMI2
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4 1333/1600/2133 DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Memory Channels
Max # of Memory Channels
4 2
Memory Bandwidth
Max Memory Bandwidth
68 GB/s 25.6 GB/s
Processor Graphics
Processor Graphics ‡
None Intel® HD Graphics 4600
Package Size
Package Size
52.5mm x 45.0mm 37.5mm x 37.5mm
Max # of PCI Express Lanes
Max # of PCI Express Lanes
28 16

More specs » More specs »

The Intel Core i7-5820K is the cheapest of three (5820K,5930K,5960X) new Haswell-E prosumer/enthusiast processors. The 5820K sports six physical cores and twelve threads which allow for enormous processing throughput. Unfortunately Intel have somewhat handicapped the 5820K by setting its base clock at just 3.3 GHz, 0.7GHz lower than the class leading 4790K. Comparing the 4790K and 5820K shows that the cheaper i7-4790K is significantly faster at both single and dual threaded workloads. The additional two cores found in the 5820K are not relevant to general computing and as such the 5820K probably makes a better server rather than consumer proposition. The Haswell-E X99 architecture also requires DDR4 RAM which is currently far more expensive than DDR3. Overall the 5820K is a very expensive option and probably best avoided by the vast majority of consumers.  [Sep '14 CPUPro]


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]


Processor Rankings (Price vs Performance) March 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]


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
  • - 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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Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
AMD Ryzen 5 1600 $188AMD RX 480 $400Samsung 850 Pro 256GB $146
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $44
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 $216SanDisk Extreme 16GB $18
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