Scan code: LN58535 Manufacturer code: BX80648I75820K

Intel i7 5820K Haswell-E 2011-3 Unlocked CPU

Intel Core i7 5820K Unlocked, S 2011-3, Haswell-E, 6 Core, 3.3GHz Clock, 3.6GHz Turbo, 15MB, 28 Lane, 140W, CPU

Scan code: LN58535 Manufacturer code: BX80648I75820K
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Order now and get it tomorrow, Thu 9th Jul
From £13.83 / month (APR 14.9%)
Monthly Payment: £49.98
Instalment Rate: 14.9% p.a. (fixed)
Cost of purchase: £287.99
Total inc. interest: £299.83
Monthly Payment: £25.86
Instalment Rate: 14.9% p.a. (fixed)
Cost of purchase: £287.99
Total inc. interest: £310.24
Monthly Payment: £17.83
Instalment Rate: 14.9% p.a. (fixed)
Cost of purchase: £287.99
Total inc. interest: £320.88
Monthly Payment: £13.83
Instalment Rate: 14.9% p.a. (fixed)
Cost of purchase: £287.99
Total inc. interest: £331.74
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Representative: 19.9% APR (variable)

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  • SCANPROTECT Protect against installation damage for 28 days. More info

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Intel® Core™ processors provide you with an unlocked, unleashed, and uncompromised processor that’s used for either extreme gaming or content creating. With the killer combination of features like Intel® Turbo Boost Technology 2.0, Intel® Hyper-Threading Technology, and over-clocking capabilities the i7 Extreme Edition is not only flexible but incredibly powerful, alternatively when content creating these features will allow you access to additional performance whenever you need it. Whatever you are using the Intel® Core™ 5820K for you will get unrivalled PC performance.

i7 Processor

Intel i7 5820K Performance
The Intel® Core™ i7-5820K is an entry level Premium Performance proccesor codenamed ‘Haswell-E’ that is fully unlocked, it is a K-Series proccesor that utilises the Haswell-E architecture featuring 6 cores and 12 thereads. The CPU comes with a 15 MB L3 Cache. The Intel® Core™ i7-5820K has support for DDR4-2133 MHz memory, the processor is also built on a 22 nm process, but with a 140 W maximum TDP. It boasts a 3.3 GHz base frequency and 3.6-3.8 GHz turbo frequency.

Intel® Core™ i7 is a brand name applies to several families of desktop and laptops, The Core™ i7 brand targets the business and high-end consumer markets for both desktop and laptop computers, and is distinguished from the enty-level Core™ i3 and the more mainstream Core™ i5.


Dramatic Increase in Media & Graphics
6 independent cores of unbelievable power that encourage you to become the digital content creator or gamer you always wanted to be. Up to 79% more multi-thread performance over 4 core platforms, Massive 12-thread performance and quad-channel memory. This processor is unlocked and is ready for you to tune it to fit your demanding needs. Tune cores, power, memory, or whatever else you need to tune to make your system fit your needs.

Intel’s 6 core processors are perfect to build your gaming PC around, and will easily deal with editing you’re videos and photos too. If you want to squeeze maximum performance and overclock your system then this 5820K processor is for you, it requires an X99 Motherboard and DDR4 Memory.


Intel® Turbo Boost Technology 2.0
Get an automatic burst of speed whenever you need it for performance that adapts to you.

Intel® Hyper-Threading Technology
Effortlessly move between multiple apps with advanced multi-tasking power, enabled when the processor handles two things at once.

Built-in Security
Delivers excellent video conferencing capability, fast video conversion, online sharing, and fast video editing and authoring.

Intel® Rapid Start Technology
Visual quality and colour fidelity enhancements for HD playback and immersive web browsing.

Intel® Identity Protection Technology
DDR4 Memory offers stunning read/write performance through efficient prefetching algorithms, lower latency, and higher memory bandwidth.

Model & Type
CPU Type Intel Core i7
CPU Model 5820K Unlocked
Socket 2011-3
Architecture Haswell-E
Manufacturing Process 22 nm
Cores & Clocks
No. of Cores 6 Core
No. of Threads 12
Core Ratio 35 x
Clock Speed 3.3 GHz
Turbo Speed 3.6 GHz
Turbo Boost Max Technology 3.0 Speed N/A
Unlocked Core Multiplier Yes
Unlocked Full Range Base Clock (B-Clock) No
Bus Speeds
FSB Speed N/A
QPI Speed N/A
UPI Links/Speed N/A
DMI Speed 5 GT/s
Memory Support
Max. Memory Size 64 GB
Max. Memory Speed DDR4 - 2133
Max. Memory Channels 4 (Quad Channel)
ECC Memory Not Supported
Intel Optane Memory No
Intel Optane DC Persistent Memory No
Lanes & Features
Intel Deep Learning Boost Support No
Node Controller Support No
PCIe Version  
PCIe Lanes 28
Integrated Graphics
Features Integrated Graphics No
Integrated Graphics Model/Type N/A
iGPU Cores  
iGPU Base Clock N/A
iGPU Boost Clock N/A
iGPU Max. Resolution  
CPU Cache
L1 Cache 6x 32 KB instruction caches, 6x 32 KB data cache
L2 Cache 6x 256KB
L3 Cache *See Intel Smart Cache*
Intel® Smart Cache 15MB
Thermals & Package
Max. TDP 140W
Thermal Specification 66.8 °C
Heatsink/Cooler Included? Not Included, Sold Separately
Package Type Retail
Additional Information
Scan Code LN58535
Model Number BX80648I75820K
GTIN 5032037065702

Please note your statutory rights are not affected.

For further information regarding Scan's warranty procedure please see our terms and conditions

36 months
Return to base
DOA Period:
28 days
RTB Period:
1 months
Manufacturer Contact Details
0870 607 2439
TekSpek Guides
Intel 4th Generation Extreme CPUs
Intel 4th Generation Extreme CPUs
Date Issued: 29th Aug 2014

New processors usually grab all the release limelight, relegating the supporting core logic and memory to mere footnotes. This time, a brand-new chipset and DDR4 memory are equal partners in the platform.

Read More

Intel Core i7 5820K Unlocked, S 2011-3, Haswell-E, 6 Core, 3.3GHz Clock, 3.6GHz Turbo, 15MB, 28 Lane, 140W, CPU is rated 4.8 out of 5 by 27.
Rated 4 out of 5 by from 6800K? I don't think so... I need lots of threads for music - virtual instruments. I waited for reviews of the 6800K only to find the 5820K overclocks faster - if I need to - and on air instead of water. May be later 6800K will be better as they fix the process, but as for now the 5820K makes more sense and is also cheaper, or was until Brexit! The rest of the range are either slower, or have unnecessary PCI lanes (for audio use) or just cost too darn much...
Date published: 2016-07-25
Rated 5 out of 5 by from Reliable, cool and crazy overpowered! (make sure you buy a cooler!) Does what it says on the tin. Haven't had any problems so far (except at the start when I didn't screw the cooler on properly!), runs fairly cool, never goes above 70 degrees even under 100% load (HeavyLoad), idles at about 50, with a Coolermaster Hyper 212 Evo. Didn't come bundled with a stock cooler, didn't expect it to, but just a heads up!
Date published: 2016-07-19
Rated 5 out of 5 by from 5820k king for multi GPU gaming Great CPU, really easy to overclock and much more PCI lanes than similar priced alternatives. if you are running more than one GPU, M.2 drives and want decent overclocking headroom, this wins hands down.
Date published: 2016-04-19
Rated 4 out of 5 by from Intel i7 5820k Installed as part of a new build computer. It does what it says on the tin! It has been running fine for a while no problems. Benchmarks are are about the same as others have reported. I am happy with my choice.
Date published: 2016-04-11
Rated 5 out of 5 by from Why bother with Skylake?! This chip is at a great price now and makes much more sense than the skylake i7, overclocked to 4.3ghz with no problems and will go higher but I am more than happy with its performance!
Date published: 2016-03-22
Rated 5 out of 5 by from This product has great features very good product, I am satisfied,it is worthwhile spending so much money, wiesie what is had
Date published: 2016-03-11
Rated 5 out of 5 by from It's a beast! This processor is a must for gamers and media editors. It packs a real punch with six cores and turbo up to 3.6 GHz. It's a sensible platform for future proofing your rig and coupled with DDR4 RAM at's simply amazing!
Date published: 2016-02-03
Rated 4 out of 5 by from It's OK as for this price. It's OK as for this price. Does what it should to do.
Date published: 2016-01-04
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Questions & Answers

Is a cooler fan included in this product ?

Its unclear if this product includes a cooling fan in the box ?
Asked by: Geoff2
No, it does not but I recommend the Noctua NH-U14S Ultra-Quiet Slim CPU Cooler with 140mm NF-A15 fan for All Intel & AMD CPU's. It's under 50 quid and it will do the trick. A doddle to install and the fan is very very quiet even at full speed!
Answered by: Jaybegood
Date published: 2016-04-09
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Intel i7 5820K Haswell-E 2011-3 Unlocked CPU
Intel i7 5820K Haswell-E 2011-3 Unlocked CPU