Original part number PSD1G400H Product name Patriot 1GB 400MHz DDR Non-ECC CL3 DIMM Unbuffered with Heatshields Producer Patriot Class of product SDR/DDR/DDR2/DDR3/DDR4 memory Memory type DDR1 Memory capacity 1024 MB Memory bus frequency 400 MHz Type of memory Non-ECC Number of memories in bundle 1 CAS Latency (CL) CL3 Heatsink Yes More info www.patriotmemory.com [LINK]www.patriotmemory.com