Need help identifying RAM cover.

[Monkeypillow]

I've seen several people's computers recently have a unique RAM cover. It may be housing a fan of some sort -- I can't really tell.

It looks like a cheese grater that's been fit over the memory. Somebody has to know what I'm referring to.

Edit: apparently it's an OCZ unit. I must not have looked hard enough.
http://www.ocztechnology.com/products/cooling_products/ocz_xtc_cooler