8GB [2x4GB] DDR2-800 RAM Memory Upgrade Kit for the Compaq HP Workstation xw4600 (Genuine A-Tech Brand) 8GB [2x4GB] DDR2-800 RAM Memory Upgrade Kit for the Compaq HP Workstation xw4600 100% Genuine A-Tech Brand Memory 4GB DDR2-800 PC2-6400 Non-ECC Unbuffered 240 Pin 1.8V CL=5 Memory 256X8 Limited Lifetime Warranty High Quality Ram specifically designed for the Compaq HP Workstation xw4600