Those look to be the original Apple sticks with the substantial heat spreaders and those FBDIMMS run very hot. I bought aftermarket RAM for mine and tried to transfer the heatspreaders over as the paper-thin ones that came with mine were flimsy to say the least. The Apple ones didn't really fit as the chips were placed differently. I suppose if someone really wants the authenticity but paying substantially more than you would now for the whole Mac Pro doesn't really make sense.