6 Cores, 12 Threads
@3.3GHz Haswell-E (2014)

2 Cores, 4 Threads
@3.5GHz Kaby Lake (2017)

Real World Speed
Performance profile from 49,300 user samples
32,401 User Benchmarks
Best Bench: 104% Base clock 3.3 GHz, turbo 4.6 GHz (avg)
Worst Bench: 71% Base clock 3.3 GHz, turbo 1.2 GHz (avg)
Poor: 71% Great: 104%
SPEED RANK: 38th / 1052
Gaming 86%
Aircraft carrier
Desktop 83%
Aircraft carrier
Workstation 75%
16,899 User Benchmarks
Best Bench: 64% Base clock 3.5 GHz
Worst Bench: 45% Base clock 3.5 GHz, turbo 0.75 GHz (avg)
Poor: 45% Great: 64%
SPEED RANK: 207th / 1052
Gaming 59%
Desktop 66%
Battle cruiser
Workstation 35%
Jet ski
Effective Speed
Effective CPU Speed
85.9 % Much faster effective speed.
58.9 %
SC Mixed
Avg. Single Core Mixed Speed
108 Pts Slightly faster single-core speed.
102 Pts
QC Mixed
Avg. Quad Core Mixed Speed
420 Pts Much faster quad-core speed.
272 Pts
MC Mixed
Avg. Multi Core Mixed Speed
851 Pts Hugely faster multi-core speed.
280 Pts
SC Mixed
OC Single Core Mixed Speed
130 Pts Faster OC single-core speed.
110 Pts
QC Mixed
OC Quad Core Mixed Speed
510 Pts Much faster OC quad-core speed.
296 Pts
MC Mixed
OC Multi Core Mixed Speed
1025 Pts Hugely faster OC multi-core speed.
300 Pts
Market Share
Based on 7,884,273 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.4 % 0.41 % +2%
Value For Money
76.9 % 107 % Much better value.
User Rating
UBM User Rating
83 % 99 % More popular.
Price (score)
$391 $59 Hugely cheaper.
43 Months 14 Months Much more recent.
Thermal Design Power (TDP)
140 Watts 54 Watts Much more energy efficient.
CPU Processing Cores
6 cores Hugely higher core count.
2 cores
CPU Processing Threads
12 threads Hugely higher thread count.
4 threads
Manufacturing process
22 nm 14 nm Much newer manufacturing.
Base Clock
Base Clock Speed
3.3 GHz 3.5 GHz Slightly faster base frequency.
Turbo Clock
Turbo Clock Speed
3.6 GHz +3% 3.5 GHz
SC Int
Single Core Integer Speed
130 Pts Faster single-core int speed.
107 Pts
SC Float
Single Core Floating Point Speed
129 Pts Faster single-core fp speed.
112 Pts
QC Int
Quad Core Integer Speed
511 Pts Hugely faster quad-core int speed.
274 Pts
QC Float
Quad Core Floating Point Speed
510 Pts Much faster quad-core fp speed.
312 Pts
MC Int
Multi Core Integer Speed
976 Pts Hugely faster multi-core int speed.
275 Pts
MC Float
Multi Core Floating Point Speed
1044 Pts Hugely faster multi-core fp speed.
313 Pts
CPU Architecture
Haswell-E (2014) Kaby Lake (2017)
Motherboard Socket
LGA2011-V3 FCLGA1151
Integrated Graphics
None HD 610
Launch Date
Launch Date
Q3'14 Q1'17
15 MB SmartCache 3 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.2, AVX 2.0, AES SSE4.1/4.2
22 nm 14 nm
Recommended Price
Recommended Customer Price
$389.00 - $396.00 $64.00
Bus Speed
Bus Speed
0 GT/s 8 GT/s DMI3
Memory Types
Memory Types
DDR4 1333/1600/2133 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Memory Channels
Max # of Memory Channels
4 2
ECC Memory Supported
ECC Memory Supported ‡
No Yes
Processor Graphics
Processor Graphics ‡
None Intel® HD Graphics 610
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 G4560 is one of the first Pentium processors to feature Hyper-threading. This means that although the G4560 only has two physical processing cores, it is able to process four threads in parallel by sharing resources between the physical cores. This typically results in a 50% performance improvement over two physical cores alone. Comparing performance between the lowest spec Kaby Lake i3 7100 and the Pentium G4560 shows that in terms of both performance and specs, very little separates them (even virtualization technology VT-d is present on the Pentium). The Pentium does lack AVX 2.0 (Advanced Vector Instructions) and it trails the i3 7100 by 400 MHz (10%) but there is no longer a clear divide between Pentiums and Core i3s. Intel have achieved an almost continuous distribution of performance levels for each price point from the cheapest Pentium to the top end i7-7700K[Jan '17 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.

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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
  • - 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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Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
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