Kingston HyperX 2GB PC3-11000 DDR3 Dual Channel Memory Kit
 

That's right, PC3-11000, or 1375MHz DDR3. PC3-11000 memory seems
to be a creation unique to Kingston, a leader in system memory and flash memory
products that has been in business since 1987. What they have done reminds me a bit
of Spinal Tap, as my initial thought was that they took a 1333MHz module and turned
the dial beyond 10, right up to 11.

http://www.bigbruin.com/2007/hyperxddr3_1