My power consumption data is not quite as good as I thought. But the numbers do look correct as the case is not even getting warm even when just using the PSU fan.
Power consumption data:-
System shut down 1-2 watts
Recording - frontend showing mythwelcome 42 watts.
Recording & watching HD program 48 watts.
Hardware
Motherboard Zotac Ionitx-S-E, dual core atom
Memory 3 GB DDR3
DVB-T2 tuner PCTV Nanostick USB.
DVB-S2 tuner TBS 6920 PCIE card.

Drive 2 TB SAMSUNG HD204UI
Case / PSU InWin BP655.