Average Bench: 79.6% (160th of 1323)

Based on 100,109 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: 70%Average: 79.6% Great: 90%
Gaming
Gaming 80%
Battleship
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 71%
Battleship

Good average bench

The Intel Core i7-5820K averaged 20.4% 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.

Strengths

Avg. Memory Latency 86.7Pts
Avg. Single Core Mixed Speed 102Pts

Good consistency

The range of scores (95th - 5th percentile) for the Intel Core i7-5820K is 20.3%. This is a relatively narrow range which indicates that the Intel Core i7-5820K performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Multi Core Mixed Speed 829Pts
Avg. Octa Core Mixed Speed 650Pts
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Average Bench

(Based on 100,109 samples)
Min Avg Max
76.9 Memory 86.7 94.4
78.9 1-Core 102 126
164 2-Core 201 245
76.7% 130 Pts
Min Avg Max
321 4-Core 391 482
541 8-Core 650 797
65.8% 520 Pts
Min Avg Max
685 64-Core 829 1,013
55.6% 829 Pts
User Benchmarks Bench Normal Heavy Server
The fastest CPU (mainstream) averages a speed of 100%
SOCKET 0, 1 CPU, 6 cores, 12 threads
Base clock 3.3 GHz, turbo 3.4 GHz (avg)
Memory 83.8
1-Core 101
2-Core 196
75% 127 Pts
4-Core 389
8-Core 610
64% 500 Pts
64-Core 814
55% 814 Pts
SOCKET 2011, 1 CPU, 6 cores, 12 threads
Base clock 3.3 GHz, turbo 3.8 GHz (avg)
Memory 77.3
1-Core 98.5
2-Core 217
74% 131 Pts
4-Core 406
8-Core 667
68% 537 Pts
64-Core 914
61% 914 Pts
100,109 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 48,527,831 CPUs tested.

 Prices

MSRP ≈ $389 @ launch in Aug '14
BHPhotoUS $3914 years
EbayUS $5001 min
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Typical Core i7-5820K Builds (Compare 3,012 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 48%
Yacht
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 43%
Speed boat

Motherboard: Asus X99-A - $240

EDIT WITH CUSTOM PC BUILDER Value: 53% - Above average Total price: $1,195

Popular Core i7-5820K compatible motherboards:

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Processor Rankings (Price vs Performance) December 2021 CPU Rankings.

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. 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.

 Specifications

Essentials

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

Graphics

Processor GraphicsNone

Memory

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

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

Platform Protection

Execute Disable BitYes
Trusted Execution TechNo

 Comments

LGA2011-V3

Added 7 years ago.

Good (edit your comment) Add link

17 days ago.

work fine, high tempeture only at hard work. pretty good at work from 2015-2020 time to change to 12900k but no way i can find memory ddr5 so it work until memory comes to me

Comment 

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


Excellent

10 months ago.

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


Good

12 months ago.

Robust CPU, 4.2, 1.2 v, idle 30 top 65


Terrible

6 months ago.

daed 5820k not good Effective Speed


Excellent

2 years ago.

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


Excellent

7 months ago.

Used it for many years, with a great motherboard it is still very capable of gaming and 200 web browsers.


Outstanding

7 years ago.


Terrible

3 years ago.

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


Excellent

2 years ago.

Is super prossesor dont need say match take it


Excellent

20 months ago.

i had this processor with 4,3ghz OC and got me 1250 pt in cinebench R15 its beautifull


Good

16 months ago.

nice 6 core cpu. can run games at 2020. have a ryzen 2600 performance


Terrible

4 years ago.

low perfomance for that price


Terrible

3 years ago.

old


Outstanding

5 years ago.

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


Good

3 years 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.


Excellent

2 years ago.

Great temperatures under HUGE overclock. (upwards of 25% ~4.5GHz!) Still stands strong in 2019. Cons - X99 platform, which means $$$


Excellent

3 years ago.

Built it new around 2015. Currently running at 4.2Ghz @1.2v on air. Game temps are around 50-60 and 70 max in stress tests. I could go higher with better cooling I suppose.


Excellent

18 months ago.

Has held out since 2015 and still demolishes anything I throw at it.


Your
opinion?
1323 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

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