Ok, i've personally used it and it does a whole lot better than my current vantec iceberq4 on a ati 9700np (pro). Temps from the cooler gave me 33C to 45C load ( maxed out settings), while my iceberq4 gives me 40C idle with 59C! load. It is very hot right now (assuming 3_C ambient) and the cards aren't tested with same conditions. When i had that ocsystem cooler it was about 21C ambient or so (big difference). Oh, by the way, there is litterally no cooling on the memory modules. The aluminum casing is elevated with little sponges on the memory chips to prevent core cracking. I didn't notice this at first and came close to cracking the core. But oh well. The back side is the only plate that touches the memory modules (it shouldn't but i forced it to). I'd say that it isn't a bad cooler, but it is still better than the iceberq4.