I have a couple of items left to order in my case-modding/cooling project, and as I go over them, I keep returning to OCZ's BGA ramsinks to cool the ram on the backside of my Radeon 9700 card (front side has an Arctic VGA Silencer, so they won't fit there). However, how much difference is there really in adding these? Will it truly keep the card a little more stable at higher-than-normal speeds? (I'm running it at 9700Pro speeds currently; the card has Samsung chips). It would probably end up being more for good looks than anything else, but I'm curious to know if anyone really has been helped by using these. If they're completely worthless, I can spend the $15 somewhere else.