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MSI 筆電 BIOS 調整內顯記憶體大小方法(附圖)

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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

Image Not Showing Possible Reasons
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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 DEL 鍵進入 BIOS 畫面
  2. 按下左ALT+右SHIFT+右CTRL+F2(未關閉媒體鍵功能的話要加Fn)呼叫出隱藏功能表
    Image Not Showing Possible Reasons
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  3. 前往進階選項(Advanced)並進入 AMD CBS→NBIO Common Options→GFX Configuration
    Image Not Showing Possible Reasons
    • The image file may be corrupted
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    Image Not Showing Possible Reasons
    • The image file may be corrupted
    • The server hosting the image is unavailable
    • The image path is incorrect
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    Image Not Showing Possible Reasons
    • The image file may be corrupted
    • The server hosting the image is unavailable
    • The image path is incorrect
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  4. iGPU Configuration(內顯組態) 調整為 UMA_SPECIFIED
    Image Not Showing Possible Reasons
    • The image file may be corrupted
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    Image Not Showing Possible Reasons
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    此時下方就會多出一條 UMA Frame buffer Size 的選項
  5. UMA Frame buffer Size 調整為你想要的大小
    Image Not Showing Possible Reasons
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    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
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    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)
    Image Not Showing Possible Reasons
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    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
    Image Not Showing Possible Reasons
    • The image file may be corrupted
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  7. 檢查是否調整成功
    工作管理員
    Image Not Showing Possible Reasons
    • The image file may be corrupted
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    AMD Radeon Software
    Image Not Showing Possible Reasons
    • The image file may be corrupted
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    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。