The MCRx40-QP (Quiet Power™) series radiators are heavy-duty, low-noise optimized, liquid-to-air heat exchangers designed to be used with 140mm fans and specifically engineered for high-end liquid cooled Personal Computers.

First introduced in 2005, the Quiet Power™ technology is the result of months of research and development focused on optimizing thermal performance and audible noise characteristics with low to medium airflow types of fans. To this day, the Quiet Power radiators have set a standard for others to follow, and meet today's PC industry highest thermal loads, quality standards, and low noise requirements at competitive prices.

For a good noise to performance ratio we recommend using the MCRx40 series radiators with fans rated in the 1500 RPM range or below (higher RPM ranges may be used for louder results).

INSTALLATION PRECAUTIONS

The single most common cause for leaks is puncture of the radiators channels. This typically occurs when users attempt to either drive screws thru the radiator, or utilize screws that are too long. Users are advised that Swiftech® will decline warranty coverage for puncture of the radiator channels located directly behind the radiator mounting screw holes.

Make sure the screws you are using do not hit the water channels!
Depending on your configuration you might want to use your own screws either to attach the fan to the radiator, radiator to the chassis, or using a Radbox. You can use either 6-32 US thread or M3.5 metric thread. But always double-check the screw length before installation or you might poke a hole in the radiator water channels!

• Thermal design is optimized for maximum heat dissipation with 140mm fans featuring very low to medium air output.
• Excellent cooling at very low noise
• Slim form factor (34mm)
• Reduces radiator intrusion on neighboring components, helps compatibility
• Self-purging plenums
• Help eliminate accumulation of air in the radiator, and annoying gurgling noises
• Brass tubes
• No corrosion
• Copper fins
• Better heat dissipation
• 1/4" BSPP (G1/4) threaded hubs
• Compatible with industry standard G1/4 fittings with captive o-ring

Materials:	Brass body and brass tubes
Construction:	2-pass, single row construction
Weight:	MCR240-QP 25 oz (708g)
Inlet/Outlet hub threads:	1/4" BSPP (G1/4")
ROHS:	Yes
Fin Density:	12 fpi louvered copper fins
Profile:	Slim form factor (34mm)