I'm using Cooler Master NotePal x2 for my Lenovo y510p and I don't think it is really cooling my laptop with that one fan in the middle. I'm really looking forward to the SF-15 and a good review please! ^^
Because you need the fans directly under the vents on the bottom of your laptop. The Coolermaster U2 will do this, because you can move the fans on the mesh to wherever you want them. THIS is what you need, not some over-priced CM Storm.
Should have a wall powered option so the fan can go faster than 1200RPM. Something just about all laptop coolers can't do for some reason. USB 3's 5 watt limit is pretty good but often these coolers are backward compatible with USB 2 which is only 2.5w max, so they design the cooler to take 2.5w or less of power. Doesn't do much cooling.
i have the SF 19 for my Asus G74sx, brought temps down almost 10 degrees and thats w/o repasting gpu and cpu ( i dont repair lappys, gotta take it to the shop in my town). Mind you my testing of temps is done by running World Community Grid and monitoring temps.