TechPowerUp takes a look at the XSPC TX360 Ultrathin Radiator
A quote from the article:
XSPC decided that they could do more than just compete for that extra decimal point of thermal performance improvement and have introduced an ultra-thin radiator with their new TX series. Measuring in at just 20.5 mm thick, it provides a compact heat dissipation solution for watercooled SFF builds.XSPC TX360 Ultrathin Radiator Review