These are memory sticks, two 1 GB Corsair Dominator GTX6 DDR3 RAM modules. They usually run at 2625MHz, but these zoom at the new world's speed record: 3078MHz. All thanks to the special nitrogen freezer plugged onto the heat sinks:

The feat was achieved by PC tinkerer Matthias Zronek, from Overclockers, using this Gigabyte P55A-UD7 motherboard with Intel Core i7-870 processor:

What I really want to have is a nitrogen-cooled iPad with 2GB of RAM. Actually, I just want the 2GB of RAM because the web browser reloading just drives me bloody crazy. [Extreme SystemsThanks Alec!]