ACP - Memory Upgrades 1GB DDR SDRAM Memory Module - 1GB (1 x 1GB) - 333MHz DDR333/PC2700 - DDR SDRAM - 184-pin THIS ACP - EP MEMORY 31P8857-AA 1GB MEMORY MODULE CAN REPLACE OR ADD TO YOUR SYSTEMS CURRENT RANDOM ACCESS MEMORY (RAM). MORE RAM WILL HELP PROGRAMS LOAD FASTER, RUN SMOOTHER, AND WILL GENERALLY IMPROVE SYSTEM PERFORMANCE.THIS MODULE WILL REQUIRE AN EMPTY RAM SLOT ON YOUR MOTHERBOARD.