512MB, 184-pin DIMM, DDR PC3200 memory module CT6464Z40B ( May Vary ) Module Size: 512MB Package: 184-pin DIMM Feature: DDR PC3200 Specs: DDR PC3200 • CL=3 • Unbuffered • NON-ECC • DDR400 • 2.6V • 64Meg x 64 •