NEC Electronics' VRC5477 system controller is a software-configurable chip that directly connects the VR5500 CPU to synchronous dynamic random access memory
(SDRAM) memory, a 32-bit PCI bus, and a local bus without external logic or buffering.
DDR (Double Data Rate) memory, sometimes called DDR SDRAM (Double Data Rate Synchronous Dynamic Random Access Memory
) or similar names, is backed by Intel archrival Advanced Micro Devices (AMD) and other companies.
Korea's Samsung Electronics Co Ltd has developed what it claims to be the world's first 128M double data rate (DDR) synchronous dynamic random access memory
(SDRAM) graphics memory chip that operates at 500Mb/s.
Samsung Electronics Industries yesterday announced it has developed the world's first one-gigabyte double data rate synchronous dynamic random access memory
chip using new 0.13-micron technology which dramatically reduces the chip size and production costs.