OCIA.net takes a look at some Swiftech MC14 BGA Memory Ramsinks their latest review.

Taking a look at the sinks out of the package, you can see that they are 100% copper and use Swiftech's tried and true cooling pin configuration instead of the standard fin type. Each sink has 16 copper pins that are equally spaced and each sink stands a total of 14.5mm high. With them being so tall, that may lead into problems installing them on some cards with different types of coolers.

Swiftech MC14 BGA Memory Ramsinks Review