If you are stuck with an N455 machine and want it to run as fast as possible, don't just focus on the RAM. Follow these steps:
Windows 7 Starter was the standard, but today, Lubuntu, Puppy Linux, or ChromeOS Flex are the best choices for maximizing the N455’s limited resources. Tips for N455 Users in 2024
Upgrading an Intel Atom N455 to 4GB of RAM is a "mileage may vary" project.
Supports both DDR2 and DDR3 (most netbooks used DDR3-667).
The with 4GB of RAM is an unconventional configuration because the processor officially supports a maximum of 2GB of RAM . While some users report successfully installing 4GB, it often leads to a "black screen" or failure to boot because of hardware and motherboard limitations. Performance Review
If you are determined to try the "Intel Atom N455 4GB RAM" combo, follow this checklist:
: For better results, experts recommend lightweight Linux distributions such as Xubuntu or Damn Small Linux .