Watts monitor?! is it working?

Hey im using a wattage monitor, while mining with i5 2500k, 8 gigs of ram, old hdd, 2x hd7950 vapor-x graphics cards, 650w bronze PSU from coolermaster, claymores v8 and old cpu miner from nicehash.

its saying im only pulling 400w from the wall? is this correct? or do you think my wattage meter is broken? i heard these cards pull 250w each, so im a little confused.