Upgrading old Dell Optiplex 755 for light gaming - New Builds and Planning - Linus Tech Tips
8GB (4GBx2) Team High Performance Memory RAM Upgrade For Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor). The Memory Kit comes with Life Time Warranty. at Amazon.com
Need help for OPTIPLEX 755, Upgrade RAM 1GB - Dell Community
Dell OptiPlex 755 Desktop Motherboard- PU052 – Buffalo Computer Parts
8GB (4 x 2GB) Dell OptiPlex 755 Minitower Desktop Small Form Factor Memory Ram | eBay
A-Tech 8GB (4X 2GB) Max Memory RAM Kit for Dell OptiPlex 755, 745, 740, (MT, DT, SFF) - DDR2 667MHz PC2-5300 Non-ECC DIMM Upgrade at Amazon.com
1GB RAM Memory Upgrade for the Dell Optiplex 755 Desktop | eBay
How to upgrade a DELL OptiPlex 755 USFF PC - YouTube