Trans Intl. has announced the availability of a 1GB DDR333 (Double Data Rate) memory module for Apple’s 17-inch PowerBook G4. The new 1GB memory module, which appears to be the first on the market, enables you to double your PowerBook’s main memory to 2GB of available RAM. Previously, it was only possible to add two 512MB modules for 1GB of total memory in the latest PowerBooks. The 1GB DDR333 module, which sells for US$699, operates at a clock rate of 166MHz and transmits data at 333Mbps.