The RAM is Crucial Ballistix Tracer. It's not the best performance stuff out there, but it looks nice and is fantastic when fault-finding as it is the only way to see that your RAM is working. They can be had in different colours and the LEDs flash faster the more they are being used. The majority of the time they flash in a nice tape computer style and speed up a little when gaming but they go mad when you fire up Prime95 as you can see: