Search  for anything...
EK

EKWB EK-Nucleus CPU AIO CR240 Dark

    • Based on 64 reviews
Condition: Used - Very Good
Checking for product changes
$99.99 Why this price?

Buy Now, Pay Later

As low as $16.67 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 10 left in stock, order soon!
Fulfilled by Computer Headquarters, Inc
Arrives Tuesday, May 6
Order within 17 hours and 46 minutes
Available payment plans shown during checkout

Size: 240mm


Style: Nucleus CR240 Dark


Features

  • All-In-One CPU cooler for Intel and AMD sockets
  • Features a double fan setup with a slim 240mm radiator
  • Universally compatible and easy to install
  • Radiator Dimensions: 281 x 124 x 27 mm

Product Dimensions: 13.46"L x 8.74"W x 6.3"H


Brand: EK


Power Connector Type: 4-Pin


Voltage: 12 Volts (DC)


Cooling Method: Water


Compatible Devices: most modern processors, including next-gen Intel and AMD socket AM5


Noise Level: 36 dB


Material: Copper, Rubber


Maximum Rotational Speed: 2500 RPM


Air Flow Capacity: 72 Cubic Feet Per Minute


Product Dimensions ‏ : ‎ 19.69 x 19.69 x 11.02 inches; 5.36 Pounds


Item model number ‏ : ‎ 5


Date First Available ‏ : ‎ June 12, 2023


Manufacturer ‏ : ‎ EKWB


Best Sellers Rank: #727 in Water Cooling Systems


Customer Reviews: 4.8 4.8 out of 5 stars 64 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • keeps the PC brain cool
Comes with brackets for both AM5, LGA 1700 sockets. Maybe LGA 2011? Bad part is you have to gain access to the back side of the mobo to install it. Seems like a quality product, nice packaging. No RGB which is fine with me. Includes a tube of thermopaste in case you need to reinstall it sometime. Which I did when changing CPU's. The pump unit came pre pasted. Flex fittings at the pump unit allow for different positions. The included instructions give you the mounting options for the radiator position. Remember, don't make the pump the high point in the system. Air can settle there and shorten it's service life. Runs quiet. Had it on an Intel 13600k then an AMD 9700x, did a great job on both. ... show more
Reviewed in the United States on November 12, 2024 by Monkyman Kong
    • Easy to install, quiet and cool.
The Nucleus 240 is sitting on a 7800x3d and cooling it like a champ. It's quiet. Clean as hell look being all black with no rgb. This was the perfect fit for.my case when I upgraded as I previously had a corsair h100 ( also a 240 rad) the build quality is top notch for an AIO. Install was fast and easy. With the included tools and parts box. The fans on the unit daisy chain and reduce cable clutter. I'd recommend to anyone with zen4 ryzen chips. ... show more
Reviewed in the United States on November 23, 2023 by Travis K.
    • Simple installation compared to many others I bought and sent back.
I've had to go through several of these because the installation process is arduous. The one I bought and sent back before this had impossible-to-use short screws that you had to put a spring on top of and try to screw in. Many corners needed more space to get fingers around, and screwdrivers were useless. Finally, I found this. If you've had the same problems as I, get this. It cools my CPU better than my prior water cooler. I'm delighted with it. ... show more
Reviewed in the United States on November 1, 2024 by WillChill
    • Excellent with attention to details and better than my two other 280mm
Review Image by Electrosoft Electrosoft
Nicely packed with attention to details down to the screws and stand off attachment tightening driver. Installation was straight forward and the CPU mount has thermal paste pre-applied with a backup syringe for multiple applications. I am in the process of prototyping several ITX build outs to cool a SP115 13900KS for potential portable use and I had started with some 280mm AIOs (EVGA and ID-Cooling) and a Hyte Revolt. I realized a 240mm just gives a better fit and more options for even smaller ITX cases (A4, D4 come to mind) . After much research, I went with the EK because it isn't bogged down with all types of extra cabling or require control software to work. You just plug in the pump to the pump header, plug in the fans to the fan header and go. It also achieved some of the best 240mm cooling scores out there. For reference, the ID-Cooling hit ~82c running the 13900ks full tilt for CB23 and the EVGA CLC 280mm hit ~80c. Both scored ~41k in CB23 pulling ~263w total. The EK Nucleus AIO only hit 72c achieving the same pull and score. All were tested on an MSI Z790i Edge with a contact frame and using same center applied dollop of KPX thermal paste in the same climate controlled room for consistency of testing. To say I was impressed is an understatement. I was already happy with 80c on the EVGA and all I wanted was a smaller AIO to at least match or get close to that but a full 10% drop in temps is fantastic. The build quality is classic EK excellence and the rotational EK pump cover is a nice touch. The cables are nice and short really aimed for a smaller case or ITX build out and they're plenty flexible. The fans daisy chain to each other for reduced wiring clutter too. Highly recommended. ... show more
Reviewed in the United States on November 15, 2023 by Electrosoft Electrosoft
    • Best AIO CPU Cooler
I'm using in an NR200 on the side mount. Fits great. Cooling a 5800X3D with max temps in the low 70's. The fans are great and are surprisingly quiet up to about 60%. Looks great and pump is inaudible. Typical high quality EK you'd expect. Thank goodness EK offered a non-RBG variant. Not everyone wants their computer cases to look like a UFO. ... show more
Reviewed in the United States on October 3, 2023 by Joseph
    • Low noise. Good temps
Review Image by JJ JJ
Fans don't get too loud and the pump is almost silent. Keeps the Ryzen 7800x3d below 75c. I had to remove the pump cover to be able to close the side panel on my Lian Li A4 itx case.
Reviewed in the United States on September 21, 2024 by JJ JJ
    • Pretty good
I'm new to the pc building world and it works pretty good so far. It's been at least 2 to 3 weeks since I've installed it. No issues so far and it comes with thermal paste pre applied, with extra thermal paste just in case.
Reviewed in the United States on January 3, 2024 by Max
    • Best for the money, and those who do not want or need Led lights.
It's cooling a slightly overclocked 12th Gen i7 and is cool & quiet.
Reviewed in the United States on August 8, 2024 by John Grimsley

Can't find a product?

Find it on Amazon first, then paste the link below.