Really going heavy duty there .... Circa 2004 CPU .... Since the pictures don't show a heat spreader on those, I would probably use WAY less. Something that small I would probably use a TINY amount and smear it with a disposable rubber glove. That way you have a visual indication. You can always put a tiny more if the first bit was too small.
Thank you very much. I will do that when I get my thermal paste.