{"id":1977,"date":"2025-10-06T23:11:00","date_gmt":"2025-10-06T16:11:00","guid":{"rendered":"https:\/\/kienthucmo.com\/?p=1977"},"modified":"2026-01-20T22:49:26","modified_gmt":"2026-01-20T15:49:26","slug":"ram-va-rom-la-gi-phan-biet-vai-tro-va-cach-toi-uu-trong-su-dung-may-tinh","status":"publish","type":"post","link":"https:\/\/kienthucmo.com\/vi\/ram-va-rom-la-gi-phan-biet-vai-tro-va-cach-toi-uu-trong-su-dung-may-tinh\/","title":{"rendered":"RAM v\u00e0 ROM l\u00e0 g\u00ec? Ph\u00e2n bi\u1ec7t, vai tr\u00f2 v\u00e0 c\u00e1ch t\u1ed1i \u01b0u trong s\u1eed d\u1ee5ng m\u00e1y t\u00ednh"},"content":{"rendered":"\n

B\u1ed9 nh\u1edb l\u00e0 m\u1ed9t trong nh\u1eefng th\u00e0nh ph\u1ea7n n\u1ec1n t\u1ea3ng c\u1ee7a m\u1ecdi h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh. Khi m\u00ecnh d\u00f9ng m\u00e1y \u0111\u1ec3 l\u01b0\u1edbt web, so\u1ea1n th\u1ea3o, l\u1eadp tr\u00ecnh, ch\u01a1i game hay ch\u1ea1y m\u00f4 h\u00ecnh AI nh\u1ecf, b\u1ed9 nh\u1edb quy\u1ebft \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i, kh\u1ea3 n\u0103ng \u0111a nhi\u1ec7m v\u00e0 tr\u1ea3i nghi\u1ec7m t\u1ed5ng th\u1ec3. Trong h\u1ec7 th\u1ed1ng b\u1ed9 nh\u1edb c\u00f3 hai \u201cnh\u00e2n v\u1eadt\u201d ch\u00ednh th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn: RAM<\/strong> (Random Access Memory) v\u00e0 ROM<\/strong> (Read-Only Memory). C\u00f9ng nhau, ch\u00fang h\u1ed7 tr\u1ee3 CPU, gi\u1eef d\u1eef li\u1ec7u t\u1ea1m th\u1eddi ho\u1eb7c l\u01b0u tr\u1eef c\u00e1c h\u01b0\u1edbng d\u1eabn kh\u1edfi \u0111\u1ed9ng quan tr\u1ecdng.<\/p>\n\n\n\n

Trong b\u00e0i vi\u1ebft n\u00e0y, m\u00ecnh c\u00f9ng b\u1ea1n s\u1ebd t\u00ecm hi\u1ec3u r\u00f5 kh\u00e1i ni\u1ec7m, c\u1ea5u t\u1ea1o, ch\u1ee9c n\u0103ng, ph\u00e2n lo\u1ea1i, so s\u00e1nh RAM v\u00e0 ROM; c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng; v\u00e0 g\u1ee3i \u00fd c\u00e1ch t\u1ed1i \u01b0u, b\u1ea3o qu\u1ea3n thi\u1ebft b\u1ecb. B\u1eaft \u0111\u1ea7u ngay th\u00f4i n\u00e0o…!!!<\/p>\n\n\n

\n
\"RAM
RAM vs ROM<\/figcaption><\/figure>\n<\/div>\n\n\n

1. T\u1ed5ng quan v\u1ec1 b\u1ed9 nh\u1edb trong m\u00e1y t\u00ednh<\/h2>\n\n\n\n

B\u1ed9 nh\u1edb (memory) trong m\u00e1y t\u00ednh l\u00e0 n\u01a1i l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 ch\u01b0\u01a1ng tr\u00ecnh ph\u1ee5c v\u1ee5 cho qu\u00e1 tr\u00ecnh x\u1eed l\u00fd c\u1ee7a CPU. N\u00f3 c\u00f3 th\u1ec3 l\u00e0 t\u1ea1m th\u1eddi (nh\u01b0 RAM, d\u1eef li\u1ec7u s\u1ebd m\u1ea5t khi t\u1eaft m\u00e1y) ho\u1eb7c v\u0129nh vi\u1ec5n (nh\u01b0 ROM, d\u1eef li\u1ec7u v\u1eabn \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i).<\/p>\n\n\n\n

\u0110i\u1ec3m quan tr\u1ecdng l\u00e0 c\u1ea7n ph\u00e2n bi\u1ec7t gi\u1eefa \u201cmemory<\/strong>\u201d v\u00e0 \u201cstorage<\/strong>\u201d:<\/p>\n\n\n\n

    \n
  • Memory (RAM\/ROM)<\/strong>: d\u00f9ng cho qu\u00e1 tr\u00ecnh x\u1eed l\u00fd tr\u1ef1c ti\u1ebfp c\u1ee7a CPU, t\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u1ef1c nhanh nh\u01b0ng dung l\u01b0\u1ee3ng th\u01b0\u1eddng nh\u1ecf h\u01a1n.<\/li>\n\n\n\n
  • Storage (SSD\/HDD)<\/strong>: d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef l\u00e2u d\u00e0i, dung l\u01b0\u1ee3ng l\u1edbn h\u01a1n nhi\u1ec1u nh\u01b0ng t\u1ed1c \u0111\u1ed9 ch\u1eadm h\u01a1n.<\/li>\n<\/ul>\n\n\n\n

    V\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac, RAM v\u00e0 ROM \u0111\u1ec1u thu\u1ed9c nh\u00f3m b\u1ed9 nh\u1edb trong (internal memory), \u0111\u01b0\u1ee3c g\u1eafn tr\u1ef1c ti\u1ebfp tr\u00ean bo m\u1ea1ch ch\u1ee7 (motherboard) ho\u1eb7c t\u00edch h\u1ee3p trong c\u00e1c chip \u0111i\u1ec1u khi\u1ec3n. Khi m\u00e1y t\u00ednh ho\u1ea1t \u0111\u1ed9ng, CPU li\u00ean t\u1ee5c \u0111\u1ecdc v\u00e0 ghi d\u1eef li\u1ec7u v\u00e0o RAM \u0111\u1ec3 th\u1ef1c thi ch\u01b0\u01a1ng tr\u00ecnh, c\u00f2n ROM l\u1ea1i l\u01b0u c\u00e1c h\u01b0\u1edbng d\u1eabn c\u1ed1 \u0111\u1ecbnh gi\u00fap m\u00e1y kh\u1edfi \u0111\u1ed9ng nh\u01b0 BIOS ho\u1eb7c UEFI.<\/p>\n\n\n\n

    Hai y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng b\u1ed9 nh\u1edb l\u00e0 t\u1ed1c \u0111\u1ed9 truy c\u1eadp (read\/write speed) v\u00e0 dung l\u01b0\u1ee3ng kh\u1ea3 d\u1ee5ng. M\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 b\u1ed9 nh\u1edb nhanh v\u00e0 \u0111\u1ee7 dung l\u01b0\u1ee3ng s\u1ebd gi\u00fap x\u1eed l\u00fd t\u00e1c v\u1ee5 m\u01b0\u1ee3t m\u00e0, gi\u1ea3m th\u1eddi gian ch\u1edd v\u00e0 t\u0103ng tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

    2. RAM \u2013 B\u1ed9 nh\u1edb truy c\u1eadp ng\u1eabu nhi\u00ean (Random Access Memory)<\/h2>\n\n\n\n

    2.1. Kh\u00e1i ni\u1ec7m v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m<\/h3>\n\n\n\n

    RAM (Random Access Memory) l\u00e0 b\u1ed9 nh\u1edb cho ph\u00e9p CPU truy c\u1eadp ng\u1eabu nhi\u00ean \u0111\u1ebfn b\u1ea5t k\u1ef3 \u00f4 nh\u1edb n\u00e0o v\u1edbi th\u1eddi gian g\u1ea7n nh\u01b0 \u0111\u1ed3ng nh\u1ea5t, thay v\u00ec ph\u1ea3i \u0111\u1ecdc tu\u1ea7n t\u1ef1 nh\u01b0 tr\u00ean \u1ed5 \u0111\u0129a. \u0110i\u1ec3m \u0111\u1eb7c tr\u01b0ng c\u1ee7a RAM l\u00e0 t\u00ednh \u201cvolatile\u201d, t\u1ee9c d\u1eef li\u1ec7u trong RAM s\u1ebd b\u1ecb x\u00f3a khi t\u1eaft ngu\u1ed3n. V\u00ec v\u1eady, RAM kh\u00f4ng d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef l\u00e2u d\u00e0i, m\u00e0 ch\u1ec9 ch\u1ee9a c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh v\u00e0 d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c x\u1eed l\u00fd t\u1ea1i th\u1eddi \u0111i\u1ec3m m\u00e1y t\u00ednh ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n

    \n
    \"RAM<\/figure>\n<\/div>\n\n\n

    Hi\u1ec3u \u0111\u01a1n gi\u1ea3n, khi b\u1ea1n m\u1edf m\u1ed9t ph\u1ea7n m\u1ec1m, h\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1ebd t\u1ea3i c\u00e1c file c\u1ea7n thi\u1ebft t\u1eeb \u1ed5 \u0111\u0129a v\u00e0o RAM \u0111\u1ec3 CPU c\u00f3 th\u1ec3 truy c\u1eadp nhanh h\u01a1n, gi\u00fap ch\u01b0\u01a1ng tr\u00ecnh ch\u1ea1y m\u01b0\u1ee3t v\u00e0 ph\u1ea3n h\u1ed3i t\u1ee9c th\u1eddi.<\/p>\n\n\n\n

    2.2. C\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h3>\n\n\n\n

    RAM \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb h\u00e0ng tri\u1ec7u \u00f4 nh\u1edb (memory cells) \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo h\u00e0ng v\u00e0 c\u1ed9t, m\u1ed7i \u00f4 nh\u1edb ch\u1ee9a m\u1ed9t bit d\u1eef li\u1ec7u (0 ho\u1eb7c 1). CPU giao ti\u1ebfp v\u1edbi RAM th\u00f4ng qua memory controller v\u00e0 bus d\u1eef li\u1ec7u \u2013 nh\u1eefng \u201c\u0111\u01b0\u1eddng d\u1eabn\u201d gi\u00fap truy\u1ec1n d\u1eef li\u1ec7u qua l\u1ea1i.<\/p>\n\n\n\n

    Khi b\u1ea1n m\u1edf m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh, CPU s\u1ebd n\u1ea1p m\u00e3 l\u1ec7nh v\u00e0 d\u1eef li\u1ec7u t\u1eeb \u1ed5 l\u01b0u tr\u1eef (SSD\/HDD) v\u00e0o RAM, r\u1ed3i truy c\u1eadp, t\u00ednh to\u00e1n, v\u00e0 ghi k\u1ebft qu\u1ea3 t\u1ea1m th\u1eddi \u1edf \u0111\u00e2y. Nh\u1edd t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc ghi nhanh h\u01a1n nhi\u1ec1u so v\u1edbi storage, RAM gi\u00fap h\u1ec7 th\u1ed1ng ph\u1ea3n h\u1ed3i g\u1ea7n nh\u01b0 t\u1ee9c th\u1eddi khi x\u1eed l\u00fd l\u1ec7nh.<\/p>\n\n\n\n

    2.3. C\u00e1c lo\u1ea1i RAM ph\u1ed5 bi\u1ebfn<\/h3>\n\n\n\n
      \n
    • SRAM (Static RAM)<\/strong>: l\u01b0u d\u1eef li\u1ec7u b\u1eb1ng transistor, kh\u00f4ng c\u1ea7n l\u00e0m t\u01b0\u01a1i (refresh), t\u1ed1c \u0111\u1ed9 cao, th\u01b0\u1eddng d\u00f9ng trong cache CPU<\/strong>, nh\u01b0ng gi\u00e1 \u0111\u1eaft v\u00e0 dung l\u01b0\u1ee3ng nh\u1ecf.<\/li>\n\n\n\n
    • DRAM (Dynamic RAM)<\/strong>: c\u1ea7n refresh \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 gi\u1eef d\u1eef li\u1ec7u, r\u1ebb h\u01a1n, th\u01b0\u1eddng d\u00f9ng l\u00e0m b\u1ed9 nh\u1edb ch\u00ednh (main memory) c\u1ee7a m\u00e1y t\u00ednh.<\/li>\n\n\n\n
    • SDRAM (Synchronous DRAM)<\/strong>: ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng b\u1ed9 v\u1edbi xung nh\u1ecbp c\u1ee7a CPU, gi\u00fap t\u0103ng hi\u1ec7u n\u0103ng.<\/li>\n\n\n\n
    • DDR (Double Data Rate) RAM<\/strong>: m\u1ed7i th\u1ebf h\u1ec7 (DDR \u2192 DDR2 \u2192 DDR3 \u2192 DDR4 \u2192 DDR5) \u0111\u1ec1u c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9, b\u0103ng th\u00f4ng, v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng. Hi\u1ec7n nay DDR4 v\u00e0 DDR5 l\u00e0 ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn.<\/li>\n\n\n\n
    • LPDDR (Low Power DDR)<\/strong>: bi\u1ebfn th\u1ec3 ti\u1ebft ki\u1ec7m \u0111i\u1ec7n, th\u01b0\u1eddng d\u00f9ng cho laptop v\u00e0 thi\u1ebft b\u1ecb di \u0111\u1ed9ng.<\/li>\n<\/ul>\n\n\n\n

      2.4. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng RAM<\/h3>\n\n\n\n

      Hi\u1ec7u su\u1ea5t c\u1ee7a RAM ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1:<\/p>\n\n\n\n

        \n
      • Dung l\u01b0\u1ee3ng (Capacity, GB)<\/strong>: quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ea1y \u0111a nhi\u1ec7m; dung l\u01b0\u1ee3ng c\u00e0ng cao, h\u1ec7 th\u1ed1ng c\u00e0ng \u00edt ph\u1ea3i d\u00f9ng b\u1ed9 nh\u1edb \u1ea3o.<\/li>\n\n\n\n
      • T\u1ea7n s\u1ed1 (Frequency\/Bandwidth, MHz)<\/strong>: t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa RAM v\u00e0 CPU; t\u1ea7n s\u1ed1 cao gi\u00fap x\u1eed l\u00fd nhanh h\u01a1n.<\/li>\n\n\n\n
      • \u0110\u1ed9 tr\u1ec5 (CAS Latency \u2013 CL)<\/strong>: th\u1eddi gian ch\u1edd \u0111\u1ec3 truy c\u1eadp d\u1eef li\u1ec7u; CL c\u00e0ng th\u1ea5p, ph\u1ea3n h\u1ed3i c\u00e0ng nhanh.<\/li>\n\n\n\n
      • S\u1ed1 k\u00eanh (Channel)<\/strong>: d\u00f9ng dual-channel ho\u1eb7c quad-channel gi\u00fap t\u0103ng b\u0103ng th\u00f4ng \u0111\u00e1ng k\u1ec3.<\/li>\n\n\n\n
      • \u0110i\u1ec7n \u00e1p v\u00e0 timing<\/strong>: \u1ea3nh h\u01b0\u1edfng t\u1edbi \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng \u00e9p xung (overclocking).<\/li>\n<\/ul>\n\n\n\n

        C\u00e1ch l\u1ef1a ch\u1ecdn RAM ph\u00f9 h\u1ee3p:<\/strong><\/p>\n\n\n\n

          \n
        • N\u1ebfu b\u1ea1n l\u00e0m l\u1eadp tr\u00ecnh, \u0111\u1ed3 h\u1ecda, ho\u1eb7c ch\u1ea1y m\u00e1y \u1ea3o, n\u00ean \u01b0u ti\u00ean dung l\u01b0\u1ee3ng (\u00edt nh\u1ea5t 16GB).<\/li>\n\n\n\n
        • N\u1ebfu b\u1ea1n ch\u01a1i game ho\u1eb7c x\u1eed l\u00fd \u0111a t\u00e1c v\u1ee5 n\u1eb7ng, n\u00ean ch\u1ecdn RAM c\u00f3 t\u1ea7n s\u1ed1 cao<\/strong> (3200MHz tr\u1edf l\u00ean) v\u00e0 dual-channel \u0111\u1ec3 t\u1ed1i \u01b0u hi\u1ec7u n\u0103ng t\u1ed5ng th\u1ec3.<\/li>\n<\/ul>\n\n\n\n

          3. ROM – B\u1ed9 nh\u1edb ch\u1ec9 \u0111\u1ecdc (Read-Only Memory)<\/h2>\n\n\n\n

          3.1 Kh\u00e1i ni\u1ec7m v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m<\/h3>\n\n\n\n

          ROM (Read-Only Memory) l\u00e0 lo\u1ea1i b\u1ed9 nh\u1edb ch\u1ec9 \u0111\u1ecdc, c\u00f3 t\u00ednh non-volatile, ngh\u0129a l\u00e0 d\u1eef li\u1ec7u trong ROM kh\u00f4ng b\u1ecb m\u1ea5t khi t\u1eaft ngu\u1ed3n. Kh\u00e1c v\u1edbi RAM, ROM kh\u00f4ng d\u00f9ng \u0111\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u t\u1ea1m th\u1eddi m\u00e0 d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh c\u1ed1 \u0111\u1ecbnh, th\u01b0\u1eddng l\u00e0 c\u00e1c \u0111o\u1ea1n m\u00e3 c\u1ea7n thi\u1ebft \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng v\u00e0 \u0111i\u1ec1u khi\u1ec3n ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n

          \n
          \"ROM<\/figure>\n<\/div>\n\n\n

          N\u00f3i m\u1ed9t c\u00e1ch d\u1ec5 hi\u1ec3u, ROM gi\u1ed1ng nh\u01b0 \u201ch\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng\u201d m\u00e0 m\u00e1y t\u00ednh \u0111\u1ecdc ngay khi kh\u1edfi \u0111\u1ed9ng \u0111\u1ec3 bi\u1ebft ph\u1ea3i l\u00e0m g\u00ec ti\u1ebfp theo – v\u00ed d\u1ee5, x\u00e1c \u0111\u1ecbnh \u1ed5 \u0111\u0129a kh\u1edfi \u0111\u1ed9ng, ki\u1ec3m tra b\u1ed9 nh\u1edb, hay t\u1ea3i h\u1ec7 \u0111i\u1ec1u h\u00e0nh. V\u00ec d\u1eef li\u1ec7u trong ROM \u0111\u01b0\u1ee3c l\u01b0u v\u0129nh vi\u1ec5n v\u00e0 \u00edt thay \u0111\u1ed5i, n\u00f3 r\u1ea5t \u1ed5n \u0111\u1ecbnh, kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi m\u1ea5t \u0111i\u1ec7n hay l\u1ed7i ph\u1ea7n m\u1ec1m.<\/p>\n\n\n\n

          3.2 C\u00e1c lo\u1ea1i ROM<\/h3>\n\n\n\n

          ROM c\u00f3 nhi\u1ec1u bi\u1ebfn th\u1ec3 kh\u00e1c nhau, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n qua th\u1eddi gian \u0111\u1ec3 t\u0103ng t\u00ednh linh ho\u1ea1t trong vi\u1ec7c ghi\/x\u00f3a d\u1eef li\u1ec7u:<\/p>\n\n\n\n

            \n
          • Mask ROM<\/strong>: D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u201ckh\u1eafc c\u1ee9ng\u201d trong chip ngay t\u1eeb khi s\u1ea3n xu\u1ea5t. Kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i, th\u01b0\u1eddng d\u00f9ng trong c\u00e1c thi\u1ebft b\u1ecb ti\u00eau d\u00f9ng s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/li>\n\n\n\n
          • PROM (Programmable ROM)<\/strong>: Cho ph\u00e9p ghi d\u1eef li\u1ec7u m\u1ed9t l\u1ea7n duy nh\u1ea5t sau khi s\u1ea3n xu\u1ea5t. N\u1ebfu mu\u1ed1n thay \u0111\u1ed5i, ph\u1ea3i thay chip m\u1edbi.<\/li>\n\n\n\n
          • EPROM (Erasable PROM)<\/strong>: C\u00f3 th\u1ec3 x\u00f3a b\u1eb1ng tia UV th\u00f4ng qua m\u1ed9t c\u1eeda s\u1ed5 nh\u1ecf tr\u00ean chip, sau \u0111\u00f3 ghi l\u1ea1i d\u1eef li\u1ec7u m\u1edbi \u2014 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn l\u1edbn trong kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng.<\/li>\n\n\n\n
          • EEPROM (Electrically Erasable PROM)<\/strong>: C\u00f3 th\u1ec3 x\u00f3a\/ghi l\u1ea1i b\u1eb1ng t\u00edn hi\u1ec7u \u0111i\u1ec7n, kh\u00f4ng c\u1ea7n \u00e1nh s\u00e1ng UV. Lo\u1ea1i n\u00e0y gi\u00fap c\u1eadp nh\u1eadt d\u1eef li\u1ec7u d\u1ec5 d\u00e0ng h\u01a1n, d\u00f9ng ph\u1ed5 bi\u1ebfn trong c\u00e1c thi\u1ebft b\u1ecb c\u1ea7n l\u01b0u c\u1ea5u h\u00ecnh.<\/li>\n\n\n\n
          • Flash ROM (Flash Memory)<\/strong>: L\u00e0 phi\u00ean b\u1ea3n EEPROM t\u1ed1i \u01b0u h\u01a1n, c\u00f3 th\u1ec3 x\u00f3a v\u00e0 ghi theo t\u1eebng kh\u1ed1i (block). Flash \u0111\u01b0\u1ee3c d\u00f9ng trong BIOS\/UEFI, USB, SSD, v\u00e0 vi \u0111i\u1ec1u khi\u1ec3n (microcontroller).<\/li>\n<\/ul>\n\n\n\n

            3.3 ROM trong m\u00e1y t\u00ednh hi\u1ec7n \u0111\u1ea1i<\/h3>\n\n\n\n

            Ng\u00e0y nay, ROM truy\u1ec1n th\u1ed1ng g\u1ea7n nh\u01b0 \u0111\u01b0\u1ee3c thay th\u1ebf ho\u00e0n to\u00e0n b\u1eb1ng Flash Memory \u2014 m\u1ed9t d\u1ea1ng b\u1ed9 nh\u1edb c\u00f3 th\u1ec3 ghi\/x\u00f3a linh ho\u1ea1t nh\u01b0ng v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh \u1ed5n \u0111\u1ecbnh nh\u01b0 ROM.<\/p>\n\n\n\n

            Khi b\u1eadt m\u00e1y t\u00ednh, CPU ho\u1eb7c chipset \u0111\u1ea7u ti\u00ean s\u1ebd \u0111\u1ecdc m\u00e3 t\u1eeb ROM (firmware). M\u00e3 n\u00e0y \u0111i\u1ec1u khi\u1ec3n c\u00e1c b\u01b0\u1edbc kh\u1edfi t\u1ea1o ph\u1ea7n c\u1ee9ng, th\u1ef1c hi\u1ec7n POST (Power-On Self-Test) \u0111\u1ec3 ki\u1ec3m tra linh ki\u1ec7n, r\u1ed3i n\u1ea1p bootloader ho\u1eb7c tr\u00ecnh kh\u1edfi \u0111\u1ed9ng h\u1ec7 \u0111i\u1ec1u h\u00e0nh t\u1eeb \u1ed5 c\u1ee9ng\/SSD.<\/p>\n\n\n\n

            \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0, d\u00f9 RAM c\u00f3 r\u1ed7ng khi ch\u01b0a c\u1ea5p \u0111i\u1ec7n, th\u00ec ROM v\u1eabn \u201cghi nh\u1edb\u201d m\u1ecdi th\u1ee9 c\u1ea7n thi\u1ebft \u0111\u1ec3 h\u1ec7 th\u1ed1ng bi\u1ebft c\u00e1ch kh\u1edfi \u0111\u1ed9ng. Nh\u1edd v\u1eady, ROM \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng b\u1ea3o \u0111\u1ea3m cho vi\u1ec7c kh\u1edfi \u0111\u1ed9ng v\u00e0 \u0111i\u1ec1u khi\u1ec3n h\u1ec7 th\u1ed1ng, gi\u00fap m\u00e1y t\u00ednh ho\u1ea1t \u0111\u1ed9ng m\u1ed9t c\u00e1ch \u1ed5n \u0111\u1ecbnh v\u00e0 tin c\u1eady.<\/p>\n\n\n\n

            \n

            T\u00f3m l\u1ea1i: ROM gi\u1ed1ng nh\u01b0 \u201cb\u1ed9 n\u00e3o ti\u1ec1m th\u1ee9c\u201d c\u1ee7a m\u00e1y t\u00ednh – n\u00f3 gi\u1eef l\u1ea1i nh\u1eefng ch\u1ec9 d\u1eabn c\u1ed1t l\u00f5i d\u00f9 h\u1ec7 th\u1ed1ng kh\u00f4ng c\u00f2n \u0111i\u1ec7n, \u0111\u1ea3m b\u1ea3o m\u1ecdi th\u1ee9 c\u00f3 th\u1ec3 kh\u1edfi \u0111\u1ed9ng l\u1ea1i ch\u00ednh x\u00e1c m\u1ed7i l\u1ea7n b\u1eadt m\u00e1y.<\/p>\n<\/blockquote>\n\n\n\n

            4. So s\u00e1nh RAM v\u00e0 ROM<\/h2>\n\n\n\n
            Ti\u00eau ch\u00ed<\/th>RAM<\/th>ROM<\/th><\/tr><\/thead>
            Ch\u1ee9c n\u0103ng<\/td>L\u01b0u t\u1ea1m d\u1eef li\u1ec7u khi ch\u01b0\u01a1ng tr\u00ecnh ch\u1ea1y<\/td>L\u01b0u ch\u01b0\u01a1ng tr\u00ecnh\/firmware kh\u1edfi \u0111\u1ed9ng<\/td><\/tr>
            T\u00ednh volatile<\/td>C\u00f3 (d\u1eef li\u1ec7u m\u1ea5t khi t\u1eaft)<\/td>Kh\u00f4ng (gi\u1eef khi t\u1eaft)<\/td><\/tr>
            T\u1ed1c \u0111\u1ed9<\/td>R\u1ea5t nhanh<\/td>Ch\u1eadm h\u01a1n RAM (t\u00f9y lo\u1ea1i)<\/td><\/tr>
            Kh\u1ea3 n\u0103ng ghi\/x\u00f3a<\/td>Ghi\/x\u00f3a d\u1ec5, thao t\u00e1c th\u01b0\u1eddng xuy\u00ean<\/td>H\u1ea1n ch\u1ebf, t\u00f9y lo\u1ea1i (Flash c\u00f3 th\u1ec3 ghi l\u1ea1i)<\/td><\/tr>
            \u1ee8ng d\u1ee5ng<\/td>Ch\u1ea1y ch\u01b0\u01a1ng tr\u00ecnh, b\u1ed9 \u0111\u1ec7m, cache<\/td>BIOS\/UEFI, firmware, bootloader<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

            5. RAM v\u00e0 ROM trong xu h\u01b0\u1edbng c\u00f4ng ngh\u1ec7 hi\u1ec7n nay<\/h2>\n\n\n\n

            C\u00f9ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a AI, \u0111\u1ed3 h\u1ecda v\u00e0 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y, RAM v\u00e0 ROM \u0111ang thay \u0111\u1ed5i nhanh ch\u00f3ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u x\u1eed l\u00fd d\u1eef li\u1ec7u ng\u00e0y c\u00e0ng l\u1edbn.<\/p>\n\n\n

            \n
            \"RAM<\/figure>\n<\/div>\n\n\n

            Tr\u01b0\u1edbc h\u1ebft, RAM ng\u00e0y c\u00e0ng c\u00f3 dung l\u01b0\u1ee3ng v\u00e0 b\u0103ng th\u00f4ng cao h\u01a1n. Chu\u1ea9n DDR5 v\u00e0 LPDDR5X gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9, gi\u1ea3m \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5, r\u1ea5t ph\u00f9 h\u1ee3p cho m\u00e1y t\u00ednh hi\u1ec7u n\u0103ng cao v\u00e0 thi\u1ebft b\u1ecb di \u0111\u1ed9ng.<\/p>\n\n\n\n

            V\u1edbi ROM<\/strong>, c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i \u0111\u00e3 chuy\u1ec3n sang flash-based firmware, s\u1eed d\u1ee5ng UEFI thay cho BIOS c\u1ed5 \u0111i\u1ec3n. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p kh\u1edfi \u0111\u1ed9ng nhanh h\u01a1n v\u00e0 c\u1eadp nh\u1eadt d\u1ec5 d\u00e0ng qua ph\u1ea7n m\u1ec1m, thay v\u00ec ph\u1ea3i can thi\u1ec7p ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n\n

            B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi nh\u01b0 NVRAM, MRAM v\u00e0 ReRAM \u0111ang \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u \u0111\u1ec3 k\u1ebft h\u1ee3p t\u1ed1c \u0111\u1ed9 c\u1ee7a RAM v\u1edbi kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef l\u00e2u d\u00e0i c\u1ee7a ROM, c\u00f3 th\u1ec3 x\u00f3a nh\u00f2a ranh gi\u1edbi gi\u1eefa hai lo\u1ea1i b\u1ed9 nh\u1edb trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n

            Ngo\u00e0i ra, ki\u1ebfn tr\u00fac b\u1ed9 nh\u1edb h\u1ee3p nh\u1ea5t (Unified Memory Architecture \u2014 UMA) \u0111ang ph\u1ed5 bi\u1ebfn tr\u00ean chip hi\u1ec7n \u0111\u1ea1i, cho ph\u00e9p CPU v\u00e0 GPU chia s\u1ebb chung b\u1ed9 nh\u1edb, gi\u1ea3m vi\u1ec7c sao ch\u00e9p d\u1eef li\u1ec7u v\u00e0 t\u0103ng hi\u1ec7u n\u0103ng x\u1eed l\u00fd.<\/p>\n\n\n\n

            6. C\u00e1ch t\u1ed1i \u01b0u v\u00e0 b\u1ea3o qu\u1ea3n RAM, ROM trong s\u1eed d\u1ee5ng<\/h2>\n\n\n\n

            \u0110\u1ec3 h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 b\u1ec1n b\u1ec9, vi\u1ec7c t\u1ed1i \u01b0u RAM v\u00e0 b\u1ea3o qu\u1ea3n ROM (firmware) l\u00e0 r\u1ea5t quan tr\u1ecdng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e1ch hi\u1ec7u qu\u1ea3 m\u00e0 m\u00ecnh th\u01b0\u1eddng \u00e1p d\u1ee5ng.<\/p>\n\n\n\n

            T\u1ed1i \u01b0u RAM<\/h3>\n\n\n\n

            RAM \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u n\u0103ng c\u1ee7a m\u00e1y t\u00ednh, \u0111\u1eb7c bi\u1ec7t khi b\u1ea1n l\u00e0m vi\u1ec7c \u0111a nhi\u1ec7m ho\u1eb7c ch\u1ea1y \u1ee9ng d\u1ee5ng n\u1eb7ng.<\/p>\n\n\n\n