You can borrow Kill-A-Watt meters at many public libraries now, lol.
i7-6700HQ processor (at 3.5GHz) =
45WHM170 chipset =
2.6WGTX970M GPU (3GB GDDR5) =
~95WDDR4 (4x16GB DIMMs at 1.20V) =
~24WPCIe (per slot) =
<75W7200rpm HDD = ~6-10W
ODD = ~12-15W est
Display panel = ?
It seems like 180W would constrain a fully-loaded system, just not enough power to run everything at full load.
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[/Korth]