EK Water Blocks, Ljubljana based premium liquid cooling gear manufacturer, is expanding its X3 lineup of reservoirs with two new Lite models, primarily designed for XTOP Revo Dual D5 PWM pump top! Additionally, new EK-RES X3 250 in white is also being released!


EK-RES X3 Lite are cylindrical standalone reservoirs, manufactured from premium quality 60mm acrylic tube and POM Acetal end caps in black color. The sealing is performed by quality EPDM rubber washers. EK-RES X3 150 Lite and EK-RES X3 250 Lite are primarily made to be paired with recently released EK-XTOP Revo Dual D5 with an enclosed EK-AF Extender Revo Dual D5 Add on. This is a small adapter fitting extender that mounts the reservoir to the EK-XTOP Revo Dual D5 unit and is not sold separately. The only difference between the two models is the size of the tube, which means the capacity of the 150 variant is around 265ml, while the 250 variant can hold around 440ml of liquid.

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EK-RES X3 150 Lite (left) and EK-RES X3 250 Lite (right)

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EK-RES X3 150 Lite mounted on a EK-XTOP Revo Dual D5

With both models, the top cap of the reservoir features three G1/4″ threaded ports, while the bottom has one G1/4″ threaded port. This allows the reservoir to be used as a standalone reservoir in various positions, such as horizontal and vertical configuration. The inner face of the top comes preinstalled with one Acrylic tube that serves a as suction point in the horizontal position. Additionally, enclosed PE foam can be used to diminish vortex occurence. Both variants come with a pair of special black holders that allow the reservoir to be installed directly on the computer chassis.


With this release, we are also adding new EK-RES X3 250, cylindrical standalone reservoir, with POM Acetal end caps in white color! The unit is the same as the existing EK-RES X3 reservoirs with improved inlet/outlet port configuration for easier and more straightforward fitting configuration and tube routing. Reservoir’s bottom is optimized for best flow and vortex ouccuraece is also diminished by the use of enclosed anti-cyclone as well as additional PE foam. Top features one G1/4″ threaded port, while the bottom features five G1/4″ threaded ports for various inlet/outlet configurations. All these features result in easy mounting, filling and quickest bleeding of air. New white EK-RES X3 250 also comes with a pair of white reservoir holders using adjustable fastening force controlled by enclosed Allen key.

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All three products are made in Slovenia, Europe and are readily available for purchase through EK Webshop and Partner Reseller Network. In the table below you can find MSR prices with VAT included.

Name MSRP (incl. VAT)
EK-RES X3 150 Lite 43,95€
EK-RES X3 250 Lite 49,95€
EK-RES X3 250 – White Acetal 54,95€