1GB PC333 DDR ECC CL2.5 RAMMODEL: KVR333X72C25/1GB VENDOR: KINGSTON VALUE RAM FEATURES: PC333 DDR DRAM- 1024MB (1 GB) 184-pin (DDR) Double Data Rate DIMM module Clock Level 2.5 333MHz ECC. Providing 3x the throughput of SDRAM DDR memory s high performance comes from its ability to perform two data operations in one clock cycle. MANUFACTURER WARRANTY: LIFETIME