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# MSI 筆電 BIOS 調整內顯記憶體大小方法(附圖) ## 轉載須知 若要轉載本文,請附作者名稱及原文章連結,謝謝配合。 ## 前言 本次操作的機型為 MSI Modern 14 B4MW,當時購買的規格如下: - CPU: AMD Ryzen 4500U - RAM: 16G DDR4 - SSD: Samsung 512G 型號未查 - 僅有內顯 此款筆電的出廠預設僅分配給內顯 512MB 的 VRAM(顯示記憶體,聽到显存會瘋掉),想調成 2G 但 BIOS 中無提供選項,經詢問微星技術客服的答覆如下 > 您好, 目前沒有設變BIOS下調整的計劃,請理解. 回覆的內容簡短,且標點符號令人看了眼睛很痛,大意就是不會提供使用者自行調整 VRAM 大小的方法。不給就不給,那就自己動手調。 ## 調整方法 :::danger :no_entry: 看過來 不負責任聲明:以下方法是自己摸索出來的,錯誤的設定可能會使你的電腦無法開機、甚而損壞,請自行斟酌並謹慎使用。 ::: 以前耳聞過 BIOS 有隱藏選單,有些是透過組合鍵解鎖,有些則是需要修改 BIOS 韌體後再刷入電腦,後者的方法難度高、危險性大,可能會將電腦變磚,且因 BIOS 廠商的軟體僅允許 OEM 廠商使用,因此網路上取得的版本是非法的,也可能夾帶病毒。幸好,在 Google 的協助下,我成功在國外論壇找到關於微星筆電的 BIOS 組合鍵。以下,就開始介紹如何調整 VRAM 大小。 1. 開機時連按 <kbd>DEL</kbd> 鍵進入 BIOS 畫面 2. 按下<kbd>左ALT</kbd>+<kbd>右SHIFT</kbd>+<kbd>右CTRL</kbd>+<kbd>F2</kbd>(未關閉媒體鍵功能的話要加<kbd>Fn</kbd>)呼叫出隱藏功能表 ![](https://i.imgur.com/769yMi6.jpg) 3. 前往進階選項(Advanced)並進入 `AMD CBS→NBIO Common Options→GFX Configuration` ![](https://i.imgur.com/LDBlr8g.jpg) ![](https://i.imgur.com/ltEwBzz.jpg) ![](https://i.imgur.com/LIZdLjM.jpg) 4. 將 `iGPU Configuration`(內顯組態) 調整為 `UMA_SPECIFIED` ![](https://i.imgur.com/qTlJtfU.jpg) ![](https://i.imgur.com/SBthSe2.jpg) 此時下方就會多出一條 `UMA Frame buffer Size` 的選項 5. 將 `UMA Frame buffer Size` 調整為你想要的大小 ![](https://i.imgur.com/ylf4a7o.jpg) 我是選 2G,蠻好奇整個 16G 都給他會怎樣,勇者再自己嘗試 6. 儲存設定並離開 ![](https://i.imgur.com/Q5rlEBz.jpg) 按下 `Save changes and Exit`(儲存變更並離開)後,你會發現螢幕閃了一下,但並沒辦法退出 BIOS 設定畫面,此時再按 `Save Changes`(儲存變更) ![](https://i.imgur.com/SZuf1y1.jpg) 它會警告你將不儲存就進行重置,但別管他,剛剛已經儲存過設定值了,按下 Yes 後就可以進入 Windows 了 ![](https://i.imgur.com/XjV3Roi.jpg) 7. 檢查是否調整成功 工作管理員 ![](https://i.imgur.com/TIoSWb3.png) AMD Radeon Software ![](https://i.imgur.com/hxtqiN2.png) 完工 ## 結語 這樣調整完,使用了好一陣子並沒有觀察到穩定性的問題,但我的情況不等於你的情況,萬一發生問題,請進 BIOS 內重置設定值。此外這項調整不會隨著重新開機而被覆寫,然而可能會在 BIOS 更新、由 Windows Update 下載的韌體更新時將其重設回 512 MB。 題外話,在隱藏功能表中看到蠻多有趣的選項,例如可調整 PState 數值、電力(預設是25W),甚至還有完全不存在的 NVIDIA 獨顯、Thunderbolt、NFC 選項,看看有趣就好,亂調導致異常就不好了。

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