Bought 8gb of ram. 4x2gb sticks from transintl a few weeks ago. Popped it in, all was well. Ordered the same stuff again Monday, for a total of 16gb, popped it in this evening and noticed that Activity Monitor only shows 8gb of ram still. about this Mac shows 16, geek bench shows 16. But activity monitor only shows 8gb. Issue? Or just a technicality?