EK adds 420mm and 560mm CoolStream SE radiators

Posted on Thursday, November 09 2017 @ 16:59 CET by Thomas De Maesschalck
EK Waterblocks takes things to the extreme with the introduction of its EK-CoolStream SE 420 and EK-CoolStream SE 560 watercooling radiators. These radiators measure exactly 140mm in width and are just 28mm thick. The 420mm version supports three 140mm fans while the 560mm variant supports four 140mm fans. These radiators will be sold for 89.95EUR and 109.95EUR, respectively, via the EK Webshop.

EKWB Coolstream SE420 SE560
Following the recent release of EK-CoolStream SE 140 and EK-CoolStream SE 280 slim radiators, EK Water Blocks the market leader in high-end liquid cooling for PC products is releasing two new slim radiators. EK-CoolStream SE 420 and EK-CoolStream SE 560 will complete the slim radiator lineup in the 140mm fan format where high-performance and high-compatibility thin radiators are needed. With case manufacturers putting more and more emphasis on the 140mm fan form factor, these new CoolStream SE radiators will surely set an example in their category.

While most radiators on the market overhang on the side, and are actually bigger than the fans they use, these two new radiators are champions of compatibility in their class. Measuring exactly 140mm in width (the same as the classic 140mm fan) and being only 28mm thick, they will surely fit where some other radiators can’t.

The new radiators follow the existing EK-CoolStream design and appearance. The square housing is evenly coated with black matte paint, and the fins themselves feature a super thin layer of black coating for a totally non-intrusive clean look.

Both EK-CoolStream SE 420 and EK-CoolStream SE 560 use a 22 FPI design, which in combination with the slim construction of the radiator provide punching performance at low fan speeds.

Technical details:
  • Copper fins
  • 90% copper tubing (H90)
  • Brass chambers
  • Aluminum/Steel housing
  • FPI: 22
  • Port threads: 2x G1/4?
  • Fan compatibility: any standard size 140x140x25mm fan
  • Fan mount thread type: UNC 6-32 thread tapping


  • About the Author

    Thomas De Maesschalck

    Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



    Loading Comments