{"id":310687,"date":"2024-01-29T19:32:04","date_gmt":"2024-01-29T12:32:04","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=310687"},"modified":"2024-01-29T19:32:04","modified_gmt":"2024-01-29T12:32:04","slug":"vsync-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/vsync-la-gi\/","title":{"rendered":"VSync l\u00e0 g\u00ec? \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a VSync | C\u00e1ch b\u1eadt VSync"},"content":{"rendered":"

Trong th\u1ebf gi\u1edbi \u0111\u1ed3 h\u1ecda tr\u00ean m\u00e1y t\u00ednh v\u00e0 gaming n\u00f3i ri\u00eang, c\u00f3 m\u1ed9t thu\u1eadt ng\u1eef m\u00e0 b\u1ea5t k\u1ef3 game th\u1ee7 hay nh\u1eefng ng\u01b0\u1eddi \u0111am m\u00ea c\u00f4ng ngh\u1ec7 n\u00e0o c\u0169ng n\u00ean bi\u1ebft \u0111\u00f3 l\u00e0 VSync. Nh\u01b0ng “VSync l\u00e0 g\u00ec”, v\u00e0 t\u1ea1i sao n\u00f3 l\u1ea1i quan tr\u1ecdng \u0111\u1ebfn v\u1eady?<\/p>\n

Trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a Ho\u00e0ng H\u00e0 Mobile, ch\u00fang t\u00f4i s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 VSync, t\u1eeb \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m, \u0111\u1ebfn c\u00e1ch b\u1eadt v\u00e0 t\u1eaft t\u00ednh n\u0103ng n\u00e0y, gi\u00fap b\u1ea1n t\u1ed1i \u01b0u h\u00f3a tr\u1ea3i nghi\u1ec7m ch\u01a1i game v\u00e0 s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 m\u00e1y t\u00ednh c\u1ee7a m\u00ecnh.<\/p>\n

T\u00ecm hi\u1ec3u ngay VSync l\u00e0 g\u00ec ?<\/h2>\n

VSync (vi\u1ebft t\u1eaft c\u1ee7a t\u1eeb g\u1ed1c Vertical Synchronization) l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i gi\u00fap \u0111\u1ed3ng b\u1ed9 h\u00f3a qu\u00e1 tr\u00ecnh t\u1ea1o h\u00ecnh \u1ea3nh c\u1ee7a card \u0111\u1ed3 h\u1ecda (Graphics Processing Unit – GPU) v\u1edbi t\u1ed1c \u0111\u1ed9 l\u00e0m m\u1edbi c\u1ee7a m\u00e0n h\u00ecnh. C\u00f4ng ngh\u1ec7 n\u00e0y cho ph\u00e9p GPU \u0111\u1ee3i cho \u0111\u1ebfn khi m\u00e0n h\u00ecnh s\u1eb5n s\u00e0ng hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh m\u1edbi, gi\u00fap h\u1ea1n ch\u1ebf t\u00ecnh tr\u1ea1ng gi\u1eadt h\u00ecnh b\u1eb1ng c\u00e1ch gi\u1edbi h\u1ea1n s\u1ed1 khung h\u00ecnh m\u1ed7i gi\u00e2y (Frames Per Second – FPS). \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 “Vsync l\u00e0 g\u00ec”, ch\u00fang ta c\u1ea7n nh\u00ecn v\u00e0o m\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a n\u00f3 trong vi\u1ec7c c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n

\"vsync-la-gi-1\"<\/p>\n

M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a VSync l\u00e0 l\u00e0m cho h\u00ecnh \u1ea3nh trong c\u00e1c t\u1ef1a game 3D tr\u1edf n\u00ean m\u01b0\u1ee3t m\u00e0 h\u01a1n. N\u00f3 t\u0103ng t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd h\u00ecnh \u1ea3nh nh\u1eb1m \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i khung h\u00ecnh \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean m\u00e0n h\u00ecnh \u0111\u1ec1u \u0111\u01b0\u1ee3c nhanh ch\u00f3ng v\u00e0 \u0111\u1ed3ng b\u1ed9. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 h\u00ecnh \u1ea3nh b\u1ecb b\u1ec3 ho\u1eb7c m\u1edd (th\u01b0\u1eddng x\u1ea3y ra khi c\u00f3 qu\u00e1 nhi\u1ec1u h\u00ecnh \u1ea3nh xu\u1ea5t hi\u1ec7n c\u00f9ng m\u1ed9t l\u00fac). K\u1ebft qu\u1ea3 l\u00e0 \u0111\u1ed3 h\u1ecda trong tr\u00f2 ch\u01a1i tr\u1edf n\u00ean s\u1ed1ng \u0111\u1ed9ng v\u00e0 ch\u00e2n th\u1ef1c h\u01a1n, mang l\u1ea1i tr\u1ea3i nghi\u1ec7m ch\u01a1i game th\u00fa v\u1ecb v\u00e0 h\u1ea5p d\u1eabn h\u01a1n cho ng\u01b0\u1eddi ch\u01a1i.<\/p>\n

L\u1ecbch s\u1eed v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a VSync t\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay<\/h2>\n

“VSync l\u00e0 g\u00ec?” kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi m\u00e0 c\u00f2n l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong l\u1ecbch s\u1eed ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 \u0111\u1ed3 h\u1ecda m\u00e1y t\u00ednh. T\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a m\u00e0n h\u00ecnh CRT (\u1ed1ng tia cat\u1ed1t), khi vi\u1ec7c \u0111\u1ed3ng b\u1ed9 h\u00f3a gi\u1eefa t\u1ed1c \u0111\u1ed9 l\u00e0m m\u1edbi m\u00e0n h\u00ecnh v\u00e0 GPU ch\u01b0a tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1 l\u1edbn, VSync \u0111\u00e3 c\u00f3 m\u1eb7t v\u00e0 ph\u00e1t tri\u1ec3n c\u00f9ng v\u1edbi c\u00f4ng ngh\u1ec7. Tuy nhi\u00ean, s\u1ef1 ra \u0111\u1eddi c\u1ee7a m\u00e0n h\u00ecnh LCD\/LED v\u00e0 card \u0111\u1ed3 h\u1ecda hi\u1ec7n \u0111\u1ea1i \u0111\u00e3 l\u00e0m thay \u0111\u1ed5i c\u1ea3nh quan c\u00f4ng ngh\u1ec7, v\u00e0 VSync tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n bao gi\u1edd h\u1ebft.<\/p>\n

\"vsync-la-gi-2\"<\/p>\n

VSync \u0111\u00e3 \u0111\u01b0a ra gi\u1ea3i ph\u00e1p cho nh\u1eefng b\u1ea5t c\u1eadp trong vi\u1ec7c hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh tr\u00ean m\u00e0n h\u00ecnh m\u00e1y t\u00ednh, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd h\u00ecnh \u1ea3nh t\u1eeb card \u0111\u1ed3 h\u1ecda. Tr\u01b0\u1edbc \u0111\u00e2y, v\u1ea5n \u0111\u1ec1 x\u1ea3y ra khi m\u00e0n h\u00ecnh ch\u01b0a k\u1ecbp hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh \u0111\u1ea7u ti\u00ean \u0111\u00e3 ph\u1ea3i chuy\u1ec3n sang h\u00ecnh \u1ea3nh ti\u1ebfp theo, g\u00e2y ra s\u1ef1 kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t v\u00e0 l\u00e0m m\u1ea5t \u0111i t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a h\u00ecnh \u1ea3nh. VSync \u0111\u00e3 gi\u1ea3i quy\u1ebft hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, mang l\u1ea1i s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 m\u01b0\u1ee3t m\u00e0 cho h\u00ecnh \u1ea3nh.<\/p>\n

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, VSync \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t t\u00ednh n\u0103ng c\u01a1 b\u1ea3n trong h\u1ea7u h\u1ebft c\u00e1c card \u0111\u1ed3 h\u1ecda v\u00e0 m\u00e0n h\u00ecnh gaming, gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7, VSync ti\u1ebfp t\u1ee5c \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c mang l\u1ea1i nh\u1eefng tr\u1ea3i nghi\u1ec7m \u0111\u1ed3 h\u1ecda ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 m\u01b0\u1ee3t m\u00e0.<\/p>\n

C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a VSync l\u00e0 g\u00ec<\/h2>\n

\u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 Vsync, tr\u01b0\u1edbc h\u1ebft c\u1ea7n n\u1eafm v\u1eefng c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3. VSync ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh v\u00e0 gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng khung h\u00ecnh m\u00e0 card \u0111\u1ed3 h\u1ecda (GPU) t\u1ea1o ra sao cho ph\u00f9 h\u1ee3p v\u1edbi t\u1ea7n su\u1ea5t l\u00e0m m\u1edbi c\u1ee7a m\u00e0n h\u00ecnh. T\u1ea7n s\u1ed1 qu\u00e9t c\u1ee7a m\u00e0n h\u00ecnh, hay refresh rate, l\u00e0 s\u1ed1 l\u1ea7n m\u00e0n h\u00ecnh c\u1eadp nh\u1eadt h\u00ecnh \u1ea3nh m\u1ed7i gi\u00e2y. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0, n\u1ebfu m\u00e0n h\u00ecnh c\u1ee7a b\u1ea1n c\u00f3 t\u1ea7n s\u1ed1 qu\u00e9t l\u00e0 60Hz, VSync s\u1ebd gi\u1edbi h\u1ea1n GPU t\u1ea1o ra kh\u00f4ng qu\u00e1 60 khung h\u00ecnh m\u1ed7i gi\u00e2y.<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a VSync l\u00e0 ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng m\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb n\u1eeda ph\u1ea7n c\u1ee7a m\u1ed9t khung h\u00ecnh v\u00e0 n\u1eeda ph\u1ea7n c\u1ee7a khung h\u00ecnh ti\u1ebfp theo c\u00f9ng m\u1ed9t l\u00fac. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi GPU t\u1ea1o ra khung h\u00ecnh v\u1edbi t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n t\u1ea7n su\u1ea5t l\u00e0m m\u1edbi c\u1ee7a m\u00e0n h\u00ecnh, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng x\u00e9 h\u00ecnh. Hi\u1ec7n t\u01b0\u1ee3ng x\u00e9 h\u00ecnh l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh, t\u1ea1o ra nh\u1eefng \u0111\u01b0\u1eddng ng\u1eaft qu\u00e3ng tr\u00ean m\u00e0n h\u00ecnh.<\/p>\n

Nh\u01b0 v\u1eady, VSync gi\u00fap c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh b\u1eb1ng c\u00e1ch \u0111\u1ea3m b\u1ea3o s\u1ef1 \u0111\u1ed3ng b\u1ed9 gi\u1eefa GPU v\u00e0 m\u00e0n h\u00ecnh, gi\u00fap ng\u01b0\u1eddi d\u00f9ng c\u00f3 tr\u1ea3i nghi\u1ec7m t\u1ed1t h\u01a1n khi ch\u01a1i game ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1ed3 h\u1ecda.<\/p>\n

C\u00e1c ch\u1ebf \u0111\u1ed9 ch\u00ednh c\u1ee7a Vsync l\u00e0 g\u00ec<\/h2>\n

B\u00ean c\u1ea1nh vi\u1ec7c hi\u1ec3u r\u00f5 \u0111\u1ecbnh ngh\u0129a Vsync, b\u1ea1n c\u1ea7n bi\u1ebft th\u00eam m\u1ed9t s\u1ed1 nh\u1eefng y\u1ebfu t\u1ed1 kh\u00e1c m\u00e0 c\u00e1c ch\u1ebf \u0111\u1ed9 c\u1ee7a t\u00ednh n\u0103ng n\u00e0y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh. Trong \u0111\u00f3, c\u00f3 hai ch\u1ebf \u0111\u1ed9 ch\u00ednh l\u00e0 Double Buffer v\u00e0 Triple Buffer.<\/p>\n

\"vsync-la-gi-4\"<\/p>\n

Double Buffer v\u00e0 Triple Buffer l\u00e0 hai ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong VSync. Double Buffer cho ph\u00e9p card \u0111\u1ed3 h\u1ecda t\u1ea1o ra m\u1ed9t khung h\u00ecnh trong khi m\u00e0n h\u00ecnh ho\u00e0n thi\u1ec7n h\u00ecnh \u1ea3nh \u0111\u1ea7u ti\u00ean, gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c tr\u00f2 ch\u01a1i \u0111\u00f2i h\u1ecfi t\u1ed1c \u0111\u1ed9 nhanh. M\u1eb7t kh\u00e1c, Triple Buffer cho ph\u00e9p v\u1ebd hai h\u00ecnh \u1ea3nh c\u00f9ng m\u1ed9t l\u00fac, l\u00e0m m\u1ecbn khung h\u00ecnh v\u00e0 ng\u0103n ch\u1eb7n vi\u1ec7c gi\u1ea3m khung h\u00ecnh, l\u00e0m vi\u1ec7c t\u1ed1t v\u1edbi V-sync. Tuy nhi\u00ean, m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec1u c\u00f3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang, t\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee7a tr\u00f2 ch\u01a1i v\u00e0 c\u1ea5u h\u00ecnh m\u00e1y t\u00ednh.<\/p>\n

Vai tr\u00f2 c\u1ee7a VSync trong vi\u1ec7c c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m \u0111\u1ed3 h\u1ecda<\/h2>\n

VSync l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 quan tr\u1ecdng trong l\u0129nh v\u1ef1c \u0111\u1ed3 h\u1ecda m\u00e1y t\u00ednh, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 ch\u01a1i game v\u00e0 xem video. VSync \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ea1o ra m\u1ed9t tr\u1ea3i nghi\u1ec7m m\u01b0\u1ee3t m\u00e0 v\u00e0 li\u1ec1n m\u1ea1ch cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n

Khi ch\u01a1i game ho\u1eb7c xem video, vi\u1ec7c h\u00ecnh \u1ea3nh hi\u1ec3n th\u1ecb m\u01b0\u1ee3t m\u00e0 v\u00e0 kh\u00f4ng b\u1ecb gi\u1eadt lag l\u00e0 r\u1ea5t quan tr\u1ecdng. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 t\u1ea1o ra m\u1ed9t tr\u1ea3i nghi\u1ec7m t\u1ed1t h\u01a1n cho ng\u01b0\u1eddi d\u00f9ng, m\u00e0 c\u00f2n gi\u00fap t\u0103ng c\u01b0\u1eddng s\u1ef1 h\u1ea5p d\u1eabn v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a tr\u00f2 ch\u01a1i ho\u1eb7c n\u1ed9i dung \u0111ang xem.<\/p>\n

Tuy nhi\u00ean, khi kh\u00f4ng c\u00f3 VSync, h\u00ecnh \u1ea3nh c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1. M\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \u201cscreen tearing\u201d, n\u01a1i m\u00e0 h\u00ecnh \u1ea3nh tr\u00ean m\u00e0n h\u00ecnh b\u1ecb x\u00e9 \u0111\u00f4i, t\u1ea1o ra m\u1ed9t d\u1ea5u v\u1ebft ngang qua m\u00e0n h\u00ecnh. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh, m\u00e0 c\u00f2n c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 gi\u1eadt lag, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n

V\u00ec v\u1eady, VSync \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c kh\u1eafc ph\u1ee5c nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, gi\u00fap t\u1ea1o ra m\u1ed9t tr\u1ea3i nghi\u1ec7m ch\u01a1i game v\u00e0 xem video m\u01b0\u1ee3t m\u00e0 v\u00e0 li\u1ec1n m\u1ea1ch. V\u1edbi VSync, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1eadn h\u01b0\u1edfng tr\u00f2 ch\u01a1i v\u00e0 n\u1ed9i dung video c\u1ee7a h\u1ecd m\u00e0 kh\u00f4ng ph\u1ea3i lo l\u1eafng v\u1ec1 c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh.<\/p>\n

Nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m \u0111\u00e1ng ch\u00fa \u00fd c\u1ee7a Vsync l\u00e0 g\u00ec<\/h2>\n

VSync l\u00e0 m\u1ed9t t\u00ednh n\u0103ng quan tr\u1ecdng trong \u0111\u1ed3 h\u1ecda m\u00e1y t\u00ednh, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong l\u0129nh v\u1ef1c gaming. Tuy nhi\u00ean, n\u00f3 c\u0169ng s\u1edf h\u1eefu nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang m\u00e0 b\u1ea1n c\u1ea7n quan t\u00e2m tr\u01b0\u1edbc khi k\u00edch ho\u1ea1t t\u00ednh n\u0103ng n\u00e0y.<\/p>\n

\u01afu \u0111i\u1ec3m VSync l\u00e0 g\u00ec<\/h3>\n

C\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh:<\/strong> VSync gi\u00fap \u0111i\u1ec1u ch\u1ec9nh ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed3 h\u1ecda c\u1ee7a tr\u00f2 ch\u01a1i nh\u1eb1m ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi m\u00e0n h\u00ecnh. N\u00f3 c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n h\u00ecnh \u1ea3nh b\u1ecb b\u1ec3 v\u00e0 l\u00e0m cho ch\u00fang tr\u1edf n\u00ean s\u1eafc n\u00e9t h\u01a1n, \u0111\u1eb7c bi\u1ec7t khi \u0111\u1ed3 h\u1ecda c\u1ee7a game v\u01b0\u1ee3t qua kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb c\u1ee7a m\u00e0n h\u00ecnh m\u00e1y t\u00ednh.<\/p>\n

N\u00e2ng c\u1ea5p tr\u1ea3i nghi\u1ec7m v\u1edbi c\u00e1c t\u1ef1a game c\u0169:<\/strong> \u0110\u1ed1i v\u1edbi nh\u1eefng game \u0111\u00e3 ph\u00e1t h\u00e0nh t\u1eeb l\u00e2u, n\u00f3 th\u01b0\u1eddng g\u1eb7p c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn vi\u1ec7c \u0111\u1ed3 h\u1ecda kh\u00f4ng t\u01b0\u01a1ng x\u1ee9ng v\u1edbi t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd cao c\u1ee7a m\u00e1y t\u00ednh hi\u1ec7n \u0111\u1ea1i. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y n\u00f3ng m\u00e1y v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a thi\u1ebft b\u1ecb. VSync l\u00e0m ch\u1eadm t\u1ed1c \u0111\u1ed9 l\u00e0m m\u1edbi c\u1ee7a m\u00e0n h\u00ecnh, ph\u00f9 h\u1ee3p v\u1edbi t\u1ed1c \u0111\u1ed9 khung h\u00ecnh (FPS), gi\u00fap c\u00e2n b\u1eb1ng v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a qu\u00e1 tr\u00ecnh x\u1eed l\u00fd \u0111\u1ed3 h\u1ecda, tr\u00e1nh g\u00e2y qu\u00e1 t\u1ea3i cho h\u1ec7 th\u1ed1ng.<\/p>\n

\"vsync-la-gi-5\"<\/p>\n

Nh\u01b0\u1ee3c \u0111i\u1ec3m VSync l\u00e0 g\u00ec<\/h3>\n

\u0110\u1ed9 tr\u1ec5 c\u1ee7a \u0111\u1ea7u v\u00e0o (Input Lag) t\u1eeb b\u00e0n ph\u00edm v\u00e0 chu\u1ed9t:<\/strong> VSync c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm th\u1eddi gian ph\u1ea3n h\u1ed3i c\u1ee7a b\u00e0n ph\u00edm v\u00e0 chu\u1ed9t do n\u00f3 ph\u1ea3i ch\u1edd \u0111\u1ee3i m\u00e0n h\u00ecnh c\u1eadp nh\u1eadt. D\u00f9 \u0111\u1ed9 tr\u1ec5 ch\u1ec9 kho\u1ea3ng 1 gi\u00e2y, nh\u01b0ng trong c\u00e1c tr\u00f2 ch\u01a1i \u0111\u00f2i h\u1ecfi ph\u1ea3n \u1ee9ng nhanh, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn.<\/p>\n

\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 m\u01b0\u1ee3t trong tr\u00f2 ch\u01a1i:<\/strong> Khi b\u1ea1n s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m h\u1ed7 tr\u1ee3 \u0111\u1ed3 h\u1ecda nh\u01b0 VSync trong l\u00fac ch\u01a1i game, n\u1ebfu m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n kh\u00f4ng c\u00f3 c\u1ea5u h\u00ecnh m\u1ea1nh, n\u00f3 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m s\u1ef1 m\u01b0\u1ee3t m\u00e0 v\u00e0 \u1ed5n \u0111\u1ecbnh trong tr\u1ea3i nghi\u1ec7m ch\u01a1i game c\u1ee7a b\u1ea1n.<\/p>\n

Y\u00eau c\u1ea7u GPU m\u1ea1nh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o khung h\u00ecnh \u1ed5n \u0111\u1ecbnh:<\/strong> \u0110\u1ec3 VSync ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3, GPU c\u1ea7n c\u00f3 kh\u1ea3 n\u0103ng duy tr\u00ec FPS \u00edt nh\u1ea5t b\u1eb1ng ho\u1eb7c cao h\u01a1n t\u1ea7n su\u1ea5t qu\u00e9t c\u1ee7a m\u00e0n h\u00ecnh. N\u1ebfu kh\u00f4ng, trong nh\u1eefng t\u00ecnh hu\u1ed1ng game \u0111\u1ed3 h\u1ecda ph\u1ee9c t\u1ea1p v\u1edbi nhi\u1ec1u h\u00e0nh \u0111\u1ed9ng nh\u01b0 n\u1ed5 v\u00e0 kh\u00f3i, s\u1ef1 kh\u00f4ng \u0111\u1ed3ng b\u1ed9 gi\u1eefa GPU v\u00e0 m\u00e0n h\u00ecnh c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng gi\u1eadt lag.<\/p>\n

Th\u1eddi \u0111i\u1ec3m h\u1ee3p l\u00fd \u0111\u1ec3 b\u1eadt\/ t\u1eaft Vsync l\u00e0 g\u00ec<\/h2>\n

V\u1edbi nh\u1eefng l\u1ee3i \u00edch v\u00e0 t\u00e1c h\u1ea1i n\u00eau tr\u00ean, ch\u1eafc h\u1eb3n b\u1ea1n s\u1ebd \u0111\u1eb7t ra m\u1ed9t c\u00e2u h\u1ecfi:”V\u1eady n\u00ean t\u1eaft\/ b\u1eadt Vsync khi n\u00e0o \u0111\u1ec3 m\u00e1y v\u1eabn ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3?”.<\/p>\n

B\u1eadt Vsync<\/h3>\n

N\u1ebfu b\u1ea1n \u0111ang ch\u01a1i game v\u00e0 nh\u1eadn th\u1ea5y h\u00ecnh \u1ea3nh b\u1ecb x\u00e9 ho\u1eb7c m\u1edd, vi\u1ec7c b\u1eadt VSync c\u00f3 th\u1ec3 gi\u00fap kh\u1eafc ph\u1ee5c t\u00ecnh tr\u1ea1ng n\u00e0y. \u0110i\u1ec1u n\u00e0y x\u1ea3y ra do card \u0111\u1ed3 h\u1ecda (GPU) g\u1eedi h\u00ecnh \u1ea3nh nhanh h\u01a1n t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd c\u1ee7a m\u00e0n h\u00ecnh, v\u00e0 VSync gi\u00fap \u0111\u1ed3ng b\u1ed9 h\u00f3a ch\u00fang. N\u1ebfu b\u1ea1n mu\u1ed1n \u0111\u1ea3m b\u1ea3o khung h\u00ecnh m\u1ed7i gi\u00e2y (FPS) kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 60Hz – m\u1ed9t t\u1ea7n s\u1ed1 l\u00fd t\u01b0\u1edfng \u0111\u1ec3 ch\u01a1i game m\u01b0\u1ee3t m\u00e0 – v\u00e0 l\u00e0m cho h\u00ecnh \u1ea3nh trong game tr\u1edf n\u00ean s\u1ed1ng \u0111\u1ed9ng, ch\u00e2n th\u1ef1c h\u01a1n; th\u00ec b\u1eadt Vsync l\u00e0 m\u1ed9t vi\u1ec7c l\u00e0m ho\u00e0n to\u00e0n c\u1ea7n thi\u1ebft.<\/p>\n

\"vsync-la-gi-6\"<\/p>\n

T\u1eaft Vsync<\/h3>\n