What is difference between DRAM and NAND?
Your computer has two kinds of memory chips inside, and they're nothing alike. One is like a whiteboard — fast, perfect for jotting notes, but erase the board when you walk away and everything vanishes. The other is like a filing cabinet — slower, but it keeps your stuff safe even when the power goes out. Let's meet them.
DRAM is the whiteboard memory. Its full name is "Dynamic Random Access Memory," but what matters is this: it's lightning-fast and the CPU uses it as a scratchpad while you're working. Every time you open a photo or type a sentence, that data sits in DRAM so the processor can grab it instantly. But DRAM is made of tiny capacitors — little electrical buckets that leak. Turn off the power and those buckets empty. Your work disappears like breath on glass.
