Summary: Easy to install, and pretty powerful fans. I installed these two fans over my 16bg memory sticks. They clip directly to the memory sticks on each side, so you'd better hope there is no charge going across the sticks. Otherwise, this device has worked just fine for 3 years.
Summary: I really like the idea. It does what it is supposed to do. The fans are ridiculously loud. Almost to the point where I might take them off and sell it, but not quite. Let's be honest, while they do serve some functionality, the appearance is pretty cool.
Summary: This little ram-fan does a great job of keeping your sticks cool. It's a little noisy on highest setting, even in a Corsair 550R Obsidian case. Don't let that alone keep you from purchasing. If your sticks are hot, this'll do the trick.
Summary: I wish there was an easy way to install LEDs into it, but a little modification, it can be done.
Pros: Looks good, keeps air circulating around the memory. Matches the inside of my case.
Cons: Starting up the fan blades tend to hit the sides. A quick bump of the side of the case usually eliminates that or it goes away. Thing collects dust like mad. I can hear it over my other fans (minus the GPU). Attaching apparatus feels really weak, but trust me, it stays on there unless you move it...
Summary: Huge fan of Corsair products, but this has now been two fans that have failed on me (120mm H-50 fan after one week and this cooler after 45 days). Still a fan of Corsair though.
Pros: Looks great, cools well, low enough price.
Cons: One of the fans makes a very loud sound. This noise normally starts during a cold boot. After hitting my case a few times the fan will quiet down, but not completely. Seems to get worse as weeks go by. also verified it's not hitting anything to cause the noise.