2GB DDR2-800 (PC2-6400) RAM Memory Upgrade for The Compaq HP Presario CQ61-313US (Genuine A-Tech Brand) at Amazon.com
1GB Black Diamond Memory Module for Compaq Presario CQ61 Series CQ60-105TU DDR2 SO-DIMM 200pin PC2-5300 667MHz Upgrade System Specific Memory - Newegg.com
Amazon.com: Laptop Motherboard 577066-001 577066-501 577066-601 Compatible Replacement Spare Part for HP Compaq Presario CQ61 Series AMD Socket S1 ATI Radeon HD 4570M 512MB GDDR3 : Electronics
2GB RAM Memory for Compaq Presario CQ62 Series Presario CQ62-210US Black Diamond Memory Module DDR2 SO-DIMM 200pin PC2-5300 667MHz Upgrade - Walmart.com
4GB 2X 2GB DDR2 RAM Memory for Compaq Presario CQ61 Series Presario CQ61-410US | eBay