A:Answer The liquid cooler, I suspect, is the Asetek 550LC. The radiator is sandwiched between two fans.
With default fan curves (the speeds at different/higher temperatures), the CPU runs at about 40 Celsius idle.
I would, however, recommend resetting the BIOS (press DELETE on the MSI screen to access the BIOS, then F6 in the BIOS menu to reset to default) so that you can enable Intel Turbo Boost, then set aggressive fan curves (higher fan speeds). My CPU now idles at about 36 Celsius after tinkering with fan speeds.