RAM Computer Memory Upgrade for Dell Optiplex 755 Mini Tower

Here are guaranteed compatible memory upgrades for your Dell Optiplex 755 Mini Tower.

Upgrading your Dell Optiplex RAM will allow you to run your system more efficiently and increase your productivity.

Adding memory is the quickest and easiest way to improve the performance of your system and can be done in just a few minutes. Installing the highest capacity memory module in each memory socket will give you the greatest performance improvement.

Our technical support team is ready to help if you have any questions or problems.

Size Product Name Part No Price Quantity Order
4GB 4GB DDR2-800 (PC2-6400) Memory
9572164 $55.50
2 x 2GB 4GB DDR2-667 (PC2-5300) Memory Kit
There are 2 pieces of 2GB RAM in this kit.
4971121 $16.95
2 x 2GB 4GB DDR2-800 (PC2-6400) Memory Kit
There are 2 pieces of 2GB RAM in this kit.
4971124 $21.77
2GB 2GB DDR2-667 (PC2-5300) Memory
4971120 $8.48
2GB 2GB DDR2-800 (PC2-6400) Memory
4971123 $10.89
1GB 1GB DDR2-800 (PC2-6400) Memory
4971122 $6.38
1GB 1GB DDR2-667 (PC2-5300) Memory
4971119 $6.77
512MB 512MB DDR2-667 (PC2-5300) Memory
4971118 $1.99
512MB 512MB DDR2-800 Memory
4971128 $15.00
256MB 256MB DDR2-667 (PC2-5300) Memory
4971125 $12.00
256MB 256MB DDR2-533 (PC2-4200) Memory
4971126 $6.00
256MB 256MB DDR2-400 (PC2-3200) Memory
4971127 $7.50

Protect Your Investment

Don't forget to pick up a wrist strap. An electro-static wrist guard is essential when working with electronic components such as RAM and other computer components. When used, a positive skin-to-ground contact is established, preventing remittance of electro-static discharge (ESD) and potentially damaging electronics.


System Information

  • Maximum Memory: 8192
  • Module Type: PC2-5300
  • Standard Memory: 512
  • Total Memory Slots: 4
  • Total Memory Slots: 2
  • Standard Memory: 1024
  • System Type: Desktop/Server
  • Module Type: PC2-6400
  • Form Factor: DIMM
  • ECC: FALSE
  • Registered: None

Why buy from ETC?

  • Lifetime warranty on all ETC Memory Upgrades
  • Free Shipping on all orders over $50 (*see details)
  • Unbeatable customer support
  • Toll-Free Technical Support
  • Selling Memory Since 1986