メインメモリ

also: メインメモリー

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Meanings

1

noun

computing

Computing term for the primary storage that the CPU can access directly; synonymous with RAM in most contexts.

メインメモリー

Variant with long final vowel; less common but still used.

メイン・メモリ

メイン・メモリー

RAM
RAM is a type of main memory; メインメモリ is the broader concept of primary storage, while RAM specifically refers to volatile read-write memory.
キャッシュメモリ
Cache memory is a smaller, faster memory that stores copies of frequently used data from main memory.

Loanword from English 'main memory'.