---
product_id: 47991093
title: "Intel i7-5820K Extreme Hex Core CPU Processor (3.30GHz, 15MB Cache, 140W, Socket 2011-V3, 28 Lanes PCI Express Generation 3)"
brand: "intel"
price: "£194.02"
currency: GBP
in_stock: true
reviews_count: 9
category: "Intel"
url: https://www.desertcart.co.uk/products/47991093-intel-i7-5820k-extreme-hex-core-cpu-processor-3-30ghz
store_origin: GB
region: United Kingdom
---

# 3.3 GHz base clock 15MB cache 6 cores / 12 threads Intel i7-5820K Extreme Hex Core CPU Processor (3.30GHz, 15MB Cache, 140W, Socket 2011-V3, 28 Lanes PCI Express Generation 3)

**Brand:** intel
**Price:** £194.02
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock Extreme Performance & Future-Proof Your Rig Today!

## Quick Answers

- **What is this?** Intel i7-5820K Extreme Hex Core CPU Processor (3.30GHz, 15MB Cache, 140W, Socket 2011-V3, 28 Lanes PCI Express Generation 3) by intel
- **How much does it cost?** £194.02 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/47991093-intel-i7-5820k-extreme-hex-core-cpu-processor-3-30ghz)

## Best For

- intel enthusiasts

## Why This Product

- Trusted intel brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Turbocharged Speed:** 3.3 GHz base frequency with Intel Turbo Boost 2.0 dynamically ramps up power when you need it most.
- • **Next-Gen Connectivity:** 28 PCIe 3.0 lanes ensure lightning-fast data transfer and future-proof expansion options.
- • **Massive Memory Support:** Handles up to 64GB RAM with blazing 68 GB/s bandwidth for ultra-smooth multitasking and heavy apps.
- • **Powerhouse Multitasking:** 6 cores and 12 threads deliver seamless performance for demanding workflows and gaming marathons.
- • **Reliable Thermal Design:** 140W TDP optimized for efficient cooling, keeping your system stable under intense loads.

## Overview

The Intel i7-5820K is a 6-core, 12-thread desktop CPU with a 3.3 GHz base clock and 15MB cache, designed for high-performance computing. Supporting up to 64GB of RAM and featuring 28 PCIe 3.0 lanes, it excels in multitasking, gaming, and content creation. With Intel Turbo Boost 2.0 and a 140W thermal design power, it balances speed and efficiency, making it a top choice for professionals and enthusiasts seeking robust, reliable performance.

## Description

Product Description Intel Core i7 5820K - 3.3 GHz - 6-core - 12 threads - 15 MB cache - LGA2011-v3 Socket - Box Box Contains Intel Core i7 5820K - 3.3 GHz - 6-core - 12 threads - 15 MB cache - LGA2011-v3 Socket - Box

Review: Great chip, Great customer support by Intel and desertcart when up in flames. - Running mines at stock because there's no need to overclock it. Destroys everything I throw at it; video rendering, multithreaded compression, gaming. Could probably do all 3 at the same time. I'm using mines with a Kraken X61 cooler, and it never goes above 50C unless I'm stress testing it. I idle at 34C. The only downfall with this chip is the X99 chipset and the motherboards. This is actually my second chip, as my first only lasted 5 months (due to motherboard faults). I was running the 5820k @ 4.0GHz on a Asus X99-S with Antec HCP-1300. During normal desktop usage, I had a fatal fault with my system. Upon troubleshooting, the PSU and motherboard AND processor was dead. There were no physical defects on the chip, or on the power supply cables (they're modular, I examined the used leads, no burns or charred pins. Replaced cables and nothing). If you google X99 VCCIN manufacturing fault you'll see results with all different motherboards and chips. I reached out to all 3 companies. Intel got back to me within 48 hours of my first email/RMA request during the weekend. I sent my chip on tuesday, and received a new chip on friday morning. Some of the best customer support I've ever received. Asus would not accept responsibility and would not provide an RMA on the motherboard as the serial key was not recognized on their RMA website?? They refused to RMA my board and told me to talk to my seller. Eventually got my refund after 2 months of chasing it up with an independent seller Antec did not respond to my RMA request or any emails within 3 weeks. I desperately reached out to desertcart as they sold me my PSU and they got me sorted out with a replacement within the same week. Very pleased with desertcart as always, excellent customer support with a very helpful representative.
Review: Excellent cpu, even air-cooled with good samples. - 5820k at 4.4Ghz with just 1.2 volts. Old single piece Noctua heatsink with a couple new PWM fans. I get just 75-80 degrees max as measured by Core Temp or Intel whilie in Handbrake/Intel Extreme stress-test. Temperature sensor doesn't play nicely with Speedfan, kept reporting much lower temps than Intel utility. I bought my 5820k in summer, 2015 so it is probably from a late manufacturing run and perhaps a little more efficient voltage-wise than most of the release samples. Had to use manual voltage to force turbo all the time as one app I use needs consistency. It eats Handbrake video encodes for breakfast, e.g. 1080p CRF14 x264 at 50fps+. For comparison's sake my previous Q6600 (which had fewer modern instruction sets ) would have managed about 2 fps at that quality. In other words, this processor exceeded my expectations and I can only assume the recent batches have been more efficient voltage-wise, or that I was very lucky. My chip is stable at 4.5 or more, but the voltage jump to around 1.26v required is too excessive heat-wise for my air-cooled PC as is, and I don't wish to risk shortening its life, have to spend more on cooling, or have water in my system. If you are in the market for a new cpu, you might prefer to get a newer cpu as Broadwell-e will likely be better.

## Features

- Processor family: Intel Core i7-5xxx, Processor frequency: 3.3 GHz
- Maximum RAM supported: 64 GB, Supported memory clock speeds: 1333, 1600, 2133 MHz, Memory bandwidth (max): 68 GB/s. Thermal power: 140W. PCI Express slots version: 3.0, Package size: 52.5 x 45 mm, Supported instruction sets: SSE4.2, AVX 2.0, AES.
- Intel Turbo Boost Technology: 2.0, Intel Virtualization Technology: VT-d, VT-x. Sockets supported-FCLGA2011-3

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MMLXIKY |
| Best Sellers Rank | 350,428 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1,532 in CPUs |
| Box Contents | Other |
| Brand Name | Intel |
| Cache Memory Installed Size | 15 |
| Customer Reviews | 4.2 4.2 out of 5 stars (628) |
| Global Trade Identification Number | 00675901296304, 00735858285490, 00735858285506, 05032037065702 |
| Item Type Name | Intel BX80648I75820K Intel i7-5820K 3.3GHz Core Processor. Dynamically allocates computing power as needed |
| Item Weight | 0.3 Pounds |
| Manufacturer | Intel |
| Model Number | BX80648I75820K |
| Platform | Windows |
| Processor Brand | Intel |
| Processor Core Count | 6 |
| Processor Count | 6 |
| Processor Number of Concurrent Threads | 12 |
| Processor Series | Core i7 |
| Processor Socket | LGA 1156 |
| Processor Speed | 3.3 GHz |
| Product Warranty | 3-Year Limited Warranty Period |
| Secondary Cache | 15 |
| UPC | 779184137368 735858285490 735858285506 675901296304 803983048232 |
| Wattage | 140 watts |

## Product Details

- **Brand:** Intel
- **CPU manufacturer:** Intel
- **CPU model:** Core i7
- **CPU socket:** LGA 1156
- **CPU speed:** 3.3 GHz
- **Cache size:** 15
- **Processor Number of Concurrent Threads:** 12
- **Processor count:** 6
- **Secondary cache:** 15
- **Wattage:** 140 watts

## Images

![Intel i7-5820K Extreme Hex Core CPU Processor (3.30GHz, 15MB Cache, 140W, Socket 2011-V3, 28 Lanes PCI Express Generation 3) - Image 1](https://m.media-amazon.com/images/I/91i7qFINxJL.jpg)
![Intel i7-5820K Extreme Hex Core CPU Processor (3.30GHz, 15MB Cache, 140W, Socket 2011-V3, 28 Lanes PCI Express Generation 3) - Image 2](https://m.media-amazon.com/images/I/51fTqzzsKWL.jpg)
![Intel i7-5820K Extreme Hex Core CPU Processor (3.30GHz, 15MB Cache, 140W, Socket 2011-V3, 28 Lanes PCI Express Generation 3) - Image 3](https://m.media-amazon.com/images/I/61DGmxGnyCL.jpg)
![Intel i7-5820K Extreme Hex Core CPU Processor (3.30GHz, 15MB Cache, 140W, Socket 2011-V3, 28 Lanes PCI Express Generation 3) - Image 4](https://m.media-amazon.com/images/I/51qclDv+OuL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Does it come with a cooler?**
A: No it does not.  I would highly recommend a very good closed water loop cooling system like a Corsair H110/105, Cooler Master Nepton 280L or something similar, especially if you plan on doing any overclocking or 24/7 type operation.

**Q: does it have a graphics function built in?**
A: The i7-5820K does not come with built-in graphics, nor do any of the Haswell-E parts.

**Q: Does it come with heat sink and thermal paste?**
A: No this cpu did not come with a heat sink. Any socket LGA2011 heat sink will work, but get a decent heat sink to keep temperatures in check.

**Q: can this handle 2 GTX980 graphics cards ?**
A: Yes. It could handle two of them. However you are limited to 28 pcie lanes. So they wouldn't both run at full 16x speed and keep in mind that not all motherboards have more than "one" 16x speed pcie slots. For instance, even on a board with 2 - 3 pcie slots rated at 16x, you are only going to run 16x full speed on the first card and maybe 8x on the second card. If the slot is rated at 8x the second card will only run at 8x.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great chip, Great customer support by Intel and Amazon when up in flames.
*by D***E on 13 November 2016*

Running mines at stock because there's no need to overclock it. Destroys everything I throw at it; video rendering, multithreaded compression, gaming. Could probably do all 3 at the same time. I'm using mines with a Kraken X61 cooler, and it never goes above 50C unless I'm stress testing it. I idle at 34C. The only downfall with this chip is the X99 chipset and the motherboards. This is actually my second chip, as my first only lasted 5 months (due to motherboard faults). I was running the 5820k @ 4.0GHz on a Asus X99-S with Antec HCP-1300. During normal desktop usage, I had a fatal fault with my system. Upon troubleshooting, the PSU and motherboard AND processor was dead. There were no physical defects on the chip, or on the power supply cables (they're modular, I examined the used leads, no burns or charred pins. Replaced cables and nothing). If you google X99 VCCIN manufacturing fault you'll see results with all different motherboards and chips. I reached out to all 3 companies. Intel got back to me within 48 hours of my first email/RMA request during the weekend. I sent my chip on tuesday, and received a new chip on friday morning. Some of the best customer support I've ever received. Asus would not accept responsibility and would not provide an RMA on the motherboard as the serial key was not recognized on their RMA website?? They refused to RMA my board and told me to talk to my seller. Eventually got my refund after 2 months of chasing it up with an independent seller Antec did not respond to my RMA request or any emails within 3 weeks. I desperately reached out to Amazon as they sold me my PSU and they got me sorted out with a replacement within the same week. Very pleased with Amazon as always, excellent customer support with a very helpful representative.

### ⭐⭐⭐⭐⭐ Excellent cpu, even air-cooled with good samples.
*by A***S on 25 May 2016*

5820k at 4.4Ghz with just 1.2 volts. Old single piece Noctua heatsink with a couple new PWM fans. I get just 75-80 degrees max as measured by Core Temp or Intel whilie in Handbrake/Intel Extreme stress-test. Temperature sensor doesn't play nicely with Speedfan, kept reporting much lower temps than Intel utility. I bought my 5820k in summer, 2015 so it is probably from a late manufacturing run and perhaps a little more efficient voltage-wise than most of the release samples. Had to use manual voltage to force turbo all the time as one app I use needs consistency. It eats Handbrake video encodes for breakfast, e.g. 1080p CRF14 x264 at 50fps+. For comparison's sake my previous Q6600 (which had fewer modern instruction sets ) would have managed about 2 fps at that quality. In other words, this processor exceeded my expectations and I can only assume the recent batches have been more efficient voltage-wise, or that I was very lucky. My chip is stable at 4.5 or more, but the voltage jump to around 1.26v required is too excessive heat-wise for my air-cooled PC as is, and I don't wish to risk shortening its life, have to spend more on cooling, or have water in my system. If you are in the market for a new cpu, you might prefer to get a newer cpu as Broadwell-e will likely be better.

### ⭐⭐⭐⭐ XMP / high speed RAM issues
*by M***D on 13 June 2016*

Purchased from amazon warehouse for £269. I would normally be a bit wary of second hand processors but this has been rock solid since purchase a couple of months or so ago. Stable and low temps at base line but I did not really notice much improvement in benchmarks (3dmark) going from i5 4670k z97 platform. That said these are overkill for gaming. Read on if you are interested in overclocking / xmp: Overclocking with AIO on asus x99 a. A word of warning xmp profiles for ram rated over 2133mhz can can the blck and strap settings, this can have some unexpected consequnces. one would be poor system stability others I noticed were higer idle temps (as the cpu frequency etc were also changed) - this is different to the z97 where only the ram settings changed. I was unable to get the board to post with xmp on 3 different ram kits. (Currently using corsair dominator platinum 3333mhz.) It has taken me ages but I have a stable overclock of this and I have had to go mostly fully manual. That said it is running nicely at 4.5GHz with a ram speed of 2666MHz and I am happy with temps etc. So question is do the higher end processsors have the same issue, from a review I read I think not but I am not 100% sure. I would probably still buy this processor rather than the ridiculously expensive higher end alternatives however wish I had done my homework. Hope this helps others.

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-17*