"The new chip - the IBM PowerPC 440GX - was designed by IBM using the company's ASIC methodology to combine the PowerPC 440 processor core and other key functions on a single chip. The new embedded processor, an upgrade to IBM's PowerPC 440GP, is targeted to support CPU speeds of 466 to 600MHz.
The PowerPC 440GX also includes a 128-bit CoreConnect system bus enhanced to run at speeds up to 166MHz, along with a 256KB block of on-chip software-controlled SRAM memory, 64-bit 133MHz PCI-X support, a 64-bit 333 MHz Double Data Rate (DDR) memory interface, and a high level of integrated communication interfaces."
IBM PowerPC pageNOTE: This G5 class processor is for the embedded market. However, it looks like it won't be long untill desktop chips come out with DDR memory and FAB'ed at 0.13 micron. :-P :-P