Average Bench: 85.8% (38th of 1052)

Based on 32,401 user benchmarks.  Devices: BFEBFBFF000306F2, , 0F8BFBFF000306F2, 1FABFBFF000306F2 Model: Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz

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]

Poor: 71%Average: 85.8% Great: 104%
Gaming 86%
Aircraft carrier
Desktop 83%
Aircraft carrier
Workstation 75%

Very good average bench

The Intel Core i7-5820K averaged just 14.2% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Intel Core i7-5820K near the top of the comparison list.


Multi Core Integer Speed 809Pts
Avg. Multi Core Mixed Speed 851Pts

Above average consistency

The range of scores (95th - 5th percentile) for the Intel Core i7-5820K is 32.9%. This is a relatively narrow range which indicates that the Intel Core i7-5820K performs reasonably consistently under varying real world conditions.


Single Core Floating Point Speed 108Pts
Avg. Single Core Mixed Speed 108Pts

Average Bench

(Based on 32,401 samples)
Min Avg Max
89.7 SC Int 108 130
90.1 SC Float 108 129
91 SC Mixed 108 130
86.2% 108 Pts
Min Avg Max
338 QC Int 420 511
343 QC Float 421 510
333 QC Mixed 420 510
95.2% 420 Pts
Min Avg Max
695 MC Int 809 976
748 MC Float 866 1,044
723 MC Mixed 851 1,025
126% 842 Pts
User Benchmarks Bench Single core Quad core Multi core
The fastest CPU (mainstream) averages a speed of 100%
SOCKET 0, 1 CPU, 6 cores, 12 threads
Base clock 3.3 GHz, turbo 2.95 GHz (avg)
SC Int 97.5
SC Float 88.1
SC Mixed 103
77% 96.1 Pts
QC Int 387
QC Float 387
QC Mixed 396
88% 390 Pts
MC Int 745
MC Float 795
MC Mixed 777
116% 772 Pts
SOCKET 0, 1 CPU, 6 cores, 12 threads
Base clock 3.3 GHz, turbo 3.4 GHz (avg)
SC Int 102
SC Float 107
SC Mixed 105
84% 105 Pts
QC Int 390
QC Float 387
QC Mixed 389
88% 389 Pts
MC Int 742
MC Float 795
MC Mixed 762
115% 767 Pts
SOCKET 2011, 1 CPU, 6 cores, 12 threads
Base clock 3.3 GHz, turbo 3.3 GHz (avg)
SC Int 97.6
SC Float 95.8
SC Mixed 98.8
78% 97.4 Pts
QC Int 392
QC Float 395
QC Mixed 394
89% 394 Pts
MC Int 705
MC Float 778
MC Mixed 756
112% 746 Pts
SOCKET 0, 1 CPU, 6 cores, 12 threads
Base clock 3.3 GHz, turbo 3.3 GHz (avg)
SC Int 97.4
SC Float 99.6
SC Mixed 96.3
78% 97.8 Pts
QC Int 388
QC Float 393
QC Mixed 391
89% 391 Pts
MC Int 730
MC Float 781
MC Mixed 771
114% 761 Pts
SOCKET 2011, 1 CPU, 6 cores, 12 threads
Base clock 3.3 GHz
SC Int 93
SC Float 89.7
SC Mixed 86.7
72% 89.8 Pts
QC Int 316
QC Float 313
QC Mixed 334
73% 321 Pts
MC Int 761
MC Float 810
MC Mixed 799
118% 790 Pts
32,401 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,873,873 CPUs tested.


Approx. $389 @ launch in Aug '14
BHPhotoUS $3914 months
EbayUS $39519 mins
NeweggUS $4013 months
Send price feedback
Typical Core i7-5820K Builds (Compare 2,058 builds) See popular component choices, score breakdowns and rankings.
Gaming 63%
Desktop 76%
Workstation 68%
Battle cruiser

Motherboard: Asus X99-A - $236

EDIT WITH CUSTOM PC BUILDER Value: 75% - Very good Total price: $1,351

Popular Core i7-5820K compatible motherboards:

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.
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.



DescriptionIntel® Core™ i7-5820K Processor (15M Cache, up to 3.60 GHz)
Code NameHaswell E
Launch DateQ3'14
Processor Numberi7-5820K
# of Cores6
# of Threads12
Cache15 MB SmartCache
Instruction Set64-bit
Instruction Set ExtensionsSSE4.2, AVX 2.0, AES
Embedded Options AvailableNo
Lithography22 nm
Recommended Price$389.00 - $396.00
Clock Speed3.3 GHz
Max Turbo Frequency3.6 GHz
Bus Speed0 GT/s
Scalability1S Only
Max TDP140 W


Processor GraphicsNone


Max Memory Size64 GB
Memory TypesDDR4 1333/1600/2133
Memory Channels4
Memory Bandwidth68 GB/s
ECC Memory SupportedNo

Expansion Options

PCI Express Revision3.0
Max # of PCI Express Lanes28

Data Protection

AES New InstructionsYes

Advanced Technologies

Virtualization Tech (VT-x)Yes
Intel 64Yes
Idle StatesYes
Enhanced Intel SpeedStep® TechYes
Thermal Monitoring TechnologiesYes
Turbo Boost Tech2.0
Hyper-Threading TechYes
Virtualization for Directed I/O (VT-d)Yes
VT-x with Extended Page Tables (EPT)Yes
Demand Based SwitchingNo
vPro TechNo
Identity Protection TechYes
Smart Response TechYes


Package Size52.5mm x 45.0mm
Max CPU Configuration1
Sockets SupportedLGA2011-v3

Platform Protection

Execute Disable BitYes
Trusted Execution TechNo



Added 3 years ago.

Excellent (edit your comment) Add link

1 month ago.


Amazing processor. just upgraded from an AMD FX 8350. It’s paired with an MSI x99a gaming pro carbon motherboard, 16gb Geil EVO x ram, and an AMD fury x. I’ve overclocked the CPU to 4.0ghz (haven’t felt the need to go faster), with a nzxt kraken x41 and my temps at idle are around 38*C and it never goes above 55*C when gaming. When I’m just messing around in windows or on the web, I haven’t noticed a difference from my fx8350, but gaming on CPU intensive games, this chip blows the former away. (GPU intensive games I couldn’t tell a difference, thank you fury x btw). I was trying to hold out until AMD released Zen, but I pulled the trigger and bought an i7. If I could do it over again, I would.—Nov '16


22 days ago.

Great perfom, best temps and cooling without watercooling. The real Ram-Timings are pos. higher as the tech spec mean. Work with low cpu power on all cores with 4.1 Ghz!


5 days ago.

Compared to the 6800k, much better overclocked now Haswell-e is mature


7 months ago.

Currently cheaper than skylake, more cores and better heat spreader for over clocking.


1 month ago.

Absolutely Nice CPU! In Use with Asrock X99 extreme6/ac, and 16GB HyperX Fury DDRs 2444mhz Ram and an MSI GTX750 2GB DDR5!


3 years ago.


10 months ago.

Equilibrium $/B


14 months ago.

An excellent overclocker for its price, the additional two cores will be definitely beneficial for any video rendering or load heavy tasks.


5 months ago.

low perfomance for that price


3 months ago.



2 years ago.

Great cpu . Good value,exellent speed and overclocking . (My oc is 4.9 Ghz on costum water cooling)

Very good

11 months ago.

This processor has server med very well and handles anything I throw it at with no issues. Easily clocks from 3.3 to 3.8 without any issues. I am watercooled however with corsair H110i.

1052 Processors (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different CPUs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $139
AMD Ryzen 5 1600 $189AMD RX 480 $400Samsung 850 Pro 256GB $140
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $198SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $205SanDisk Extreme 16GB $18
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback