Turns your netbook into a basic Chromebook. It is highly optimized for low-power Intel chips.

Certain late-generation netbook motherboards can physically accept and map a single 4GB DDR3 SODIMM module. Even when the hardware accepts the module, the 32-bit architecture limitations of specific operating systems or internal bus constraints may cap the usable memory slightly below the full 4GB. Performance Impact: What 4GB of RAM Changes

In summary, adding 4GB of RAM will not transform an Atom N455 netbook into a modern-day performance machine. It provides more memory headroom, which can reduce system lag when swapping data to the hard drive, but the core processing speed remains a severe constraint. The system will never feel "fast."

Released in Q2 2010, the Intel Atom N455 was part of the "Pine Trail" generation. It was a single-core processor built on a 45nm manufacturing process.

While the processor itself has a hard cap, the motherboard and chipset design also dictate upgrade success.