OcUK Extreme

OcUK Extreme
Intel Core i7-7700K 4.2GHz (Kaby Lake) Socket LGA1151 Processor - Retail

  • BX80677I77700K
  • Quad Core with Hyperthreading Technology
  • 4.20GHz clock speed
  • 14nm Process
  • 8MB L3 Cache
  • Dual Channel DDR4 Controller
  • Integrated Iris DX12 Graphics
  • 3 Year Warranty

10+ In stock

Was: £379.99
£359.99 *
pay with amazon payments finance with V12 Finance

Stock Code: CP-62F-IN

EAN: 5032037092562

MPN: BX80677I77700K

Manufacturer: OcUK Extreme

tech communitySupported by the biggest tech community forums.overclockers.co.uk
Direct Service Hotline
+44 (0)1782 44 44 55
What our customers say about us
4.8 Google Customer Reviews
Product information:

Intel Core i7-7700K 4.2GHz (Kaby Lake) Socket LGA1151 Processor - Retail

Intel Kaby Lake is Skylake perfected with improved performance clock for clock and vastly superior overclocking ability on K series processors. Intel's 7th generation processors use the S1151 socket and are compatible with Intel Z100 and Z200 Series chipset motherboards such as Z170 and Z270.

In our own testing here at OcUK HQ in our technical labs our very own 8 Pack has being overclocking these processors as high as 5.2GHz on good air cooling and AIO setups, moving to a full blown water cooling loop helps further lower temperatures and improve stability when pushing beyond 5GHz. On more serious hardcore cooling by professionals and overclocking champions such as Overclockers UK very own 8 Pack as high as 7GHz has being seen. Of course overclocking is not guaranteed but we do have some 8 Pack and 8 Pack approved bundles and systems where you can order with CPU overclocks guaranteed as high a 5.2GHz for a premium.

This is a retail boxed processor and comes with Intel 3yr warranty and is un-opened and brand new, so your overclocking mileage is down to yourself and luck of the draw but Kabylake promises to push the envelope the furthest yet when it comes to frequencies making them ideal for games and applications that require outright pure MHz performance and they still have incredible multi core performance as well.

- Increased Core Performance
- Enhanced Full Range BCLK Overclocking
- Media and Display Enhancements: 5120x2880@30Hz w/ one cable; 5120x2880@60Hz w/ two cables
- HEVC 10-bit(HW) Decode/Encode
- VP9 10-bit(HW) Decode
- Premium UHD/4K Content
- Support for Intel® Optane™ Technology
- Support for Thunderbolt™ 3
- Intel® Ready Mode Technology
- Intel® Turbo Boost Technology 2.0
- Supported by new Intel Z270 series chipset and previous Z170 series chipset
- Latest Dual Channel DDR4 support upto 5000MHz+
- High performance HD graphics

- Lithography Process: 14 nm
- Cores: 4
- Threads: 8
- Frequency: 4.20 GHz (Turbo Mode 4.50GHz)
- Integrated Iris (HD 630) Graphics with 350MHz base clock and upto 1150MHz max GPU clock
- Cache: 8MB shared L3
- Memory Controller: Dual channel DDR4 2133/2400/2666/3000/3200/3600/4000/4200/4400/4600/5000+ MHz
- Socket: LGA1151
- Memory compatibility: All DDR4 is compatible (Check your motherboards manual)
- 3yr Warranty

Please Note: If using in conjunction with a z170 Motherboard - The Motherboard will require a BIOS update prior to unlocking compatibility with KabyLake.

More links for "Intel Core i7-7700K 4.2GHz (Kaby Lake) Socket LGA1151 Processor - Retail"


Customer review

100% (5)
0% (0)
0% (0)
0% (0)
0% (0)
Star Rating

Average customer rating

(from 5 customer reviews)
All Time (5)

Amazing yet slightly warm CPU

Purchased for my new build and over the moon with the power, i came from an i5 4460 to this and the difference is off the scale. Running on an Asus Z270E, 16GB G.Skill 3200Mhz Ram and a Strix GTX 1080. I plumped for a NZXT X62 Cooler for this beast and glad i did, idle 30c and going into high 60's under load. I have had 5Ghz using the profile in my Z270E but i am more than happy with the 4.5Ghz i am getting with the XPM profile with my ram at 3200Mhz.

Andy Bell 2017-09-11

Fastest Joint 1st with 7740X for Single-Threaded performance IMHO

De-lidded & Overclocked to 5166MHz @ 1.400v Prime95 Stable. Max stress temps 75c, lowest idle 30c. Absolute screamer this thing is. Highly recommended for a gaming pc rig.

Michael 2017-08-25

Fast but hot

Amazing processor - it won't be the bottleneck in your system!

I have found that for overclocks 4.9ghz and above, the chip runs hot, even with voltages finely tuned.

The way the cpus own heat spreader it connected to the chip is very poor and so whatever cooling solution you have, it doesn't make a huge difference. Temps can spike and most mobos like to run fans at 100% once it reaches 75 degrees so I would recommend a 360mm AIO as a minimum.

Ian McCabe 2017-04-21

blazing fast chip

I purchased this for my new build,
blazing fast chip with 4.5Ghz turbo.
overclocking is great i would suggest you get more efficient cooling than the previous gens (comeing from i7 3770k ivy bridge) this new chip runs much hotter.

tony 2017-01-31


Absolute beast :)

Manendran 2017-01-25

Write a review

Reviews will be active after verification

* Required field

Awards & Media Coverage

  • OC3D - Enthusiast Award

    "Since the release of the 2nd Generation of Intel Core Processors they have been dominating the market with a combination of affordability and performance. Whether you have gone down the i5 route with models such as the 2500K or 6600K, or have been sticking to the Core i7 hyperthreading models such as the i7-2600K or i7-4790K, it is fair to say that you'll have been pleased with your purchase."

 Recently Viewed
    Stock level indicator

    Pre Order

    New item that you can order before we receive stock. Orders will be shipped on a first come first served basis. If an ETA is available it will be displayed on hover.

    Bought to order

    Items that are bought by us when a purchase is made, this generally is for highly expensive items, items with a very slow run rate or speciality items

    In stock

    The item is in stock.

    Due today

    The item is out of stock and expected to arrive today.

    ETA: XX.XX

    The item is out of stock and estimated to arrive on the date provided.

    Built To Order

    The Item is built to order. As you change the options, the stock status will automatically update depending on your selection.

    Out of stock

    The item is out of stock and estimated delivery date is not known at this time.
    Loan Information

    Select Loan Product:

    For more information click here