A few memory manufactures will showcase its DDR3 memory clocked at over 2,000 MHz. DDR3 1333 or 1500 is so overclockable that it is a walk in a park to get this memory over the 2,000 MHz mark.
You don’t gain much performance, but hey it’s a cool number. Jedec certifies DDR3 at 1066,1333 and 1600 but no more than that, but you can always overclock if you want to go faster.
With a good motherboard, P35 chipset and only a few extra of volts, you will be able to get over DDR3 2000 speeds and that is what many birds wants to show at Computex.