The W9751G6JB is a 512Mb DDR2 SDRAM, organized as 8,388,608 words × 4 banks × 16 bits, supporting transfer rates up to 1066Mb/sec (DDR2-1066). It comes in various speed grades (-18, -25, -25I, -25A, -25K, -3), with industrial and automotive grades meeting specific temperature and performance requirements. It uses differential clocks and source synchronous I/O.