電腦RAM簡介

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電腦RAM簡介

隨機存取存儲器(RAM)是電腦世界的無名英雄。電腦製造商喜歡吹噓CPU的功率,顯示器的尺寸和分辨率,甚至在筆記本電腦中更常見的是計算機的厚度。現在不要誤會我們,它們都是重要的規格,但是精明的電腦購物者知道也要注意一個不太受歡迎的規格:機器有多少RAM。

為什麼這很重要,您怎麼知道應該尋找什麼數字?繼續閱讀,我們會告訴您所有您需要知道的內容-它完全不會讓人感到隨意。

什麼是RAM,它對您的電腦有什麼作用?

從最基本的角度來看,電腦由三個主要組件組成。

  • CPU:CPU是實際執行計算的部分。
  • 硬盤驅動器:硬盤驅動器包含CPU完成其工作所需的一切,包括操作系統,應用程序和文件。
  • RAM:RAM,即內存,僅存儲CPU在任何給定時刻所需的硬盤驅動器中的部分數據。

RAM與硬盤

在某些方面,PC的RAM和硬盤驅動器相似,因為RAM和硬盤驅動器都存儲信息。在設計硬盤驅動器以緩慢但穩定的速度讀取和寫入大量信息的情況下,RAM的運行速度快數千倍。RAM是電腦的重要組成部分。沒有它,您的所有信息都將存儲在一個訪問速度極慢的地方,這將使您的電腦同樣慢。

您擁有的RAM越多,則可以將更多信息存儲在此超高速內存中,而不是使硬盤驅動器慢得多。換句話說,決定您的電腦有多“快”的是RAM-比幾乎任何其他組件都要多。一次打開的應用程序越多,或者這些應用程序對計算能力的要求越高,則關於擁有多少RAM的速度差異就越多。例如,如果您嘗試玩資源密集的視頻遊戲或使用Illustrator或Photoshop,則RAM越少,則在嘗試遊戲或編輯該照片時電腦的速度就會越慢。

內存容量與硬盤驅動器上的可用空間之間也存在關係。如果您的電腦上有少量的RAM(例如2GB),它將被迫更頻繁地讀寫硬盤,這會減慢速度。如果您的硬盤驅動器上的可用空間非常小,則這些讀寫操作將變慢,因為CPU必須花費更多時間來處理文件才能訪問它們。

您實際需要多少RAM?

對於基本的日常計算,8GB的內存應該足夠了。這給您足夠的空間來完全加載Windows,再加上一些生產力應用程序和Web瀏覽器。只要您不在瀏覽器中打開數十個選項卡,或者忘記退出不再需要運行的應用程序,就不會遇到任何性能問題。如果您出於謹慎考慮關閉未使用的應用程序,則會發現對於大多數遊戲來說8GB的內存就足夠了(某些遊戲只需要4GB),只要您沒有以最大設置運行它們即可。

一旦開始需要同時打開多個應用程序(例如,電子郵件客戶端,瀏覽器,Adobe Acrobat,幾個Microsoft Office應用程序以及可能是Slack等通信客戶端),那8GB的RAM將很快不堪重負。如果您是主要的多任務處理程序,您會發現16GB的RAM將為您提供保持所有這些程序平穩運行所需的額外空間。儘管您可能需要注意同時運行哪些其他程序,但不太可能找到一款使用8GB RAM不能流暢運行的遊戲。 《孤島危機3》可能是與Microsoft Word和Outlook共享內容的舞台,但是您需要遠離繁重的需求,例如帶有大量廣告和自動播放視頻的網站。

對於大多數人來說,超過16GB可能是不必要的。請記住:RAM就像飛機上的座位。當飛機幾乎在所有航班中都空著一半時,使用747在兩個城市之間飛行毫無意義–它的成本比小型飛機高得多,而您根本沒有充分利用其潛力。只有在您的計算需求要利用額外的空間時,擁有更多的RAM才是有益的。對於遊戲玩家來說,最好的指南是查看自己喜歡的遊戲的推薦規格(而非最低要求)。這些將列出出色遊戲體驗所需的CPU,GPU和RAM要求。

儘管如此,仍有一些人可以從中受益,而16GB RAM對於那些喜歡在瀏覽器中打開許多選項卡,同時處理大型文檔的人或視頻和圖形專業人士通常需要與大文件。想要在遊戲時不僅僅運行自己的遊戲的玩家還可以從16GB中受益,但是如果您希望擁有16GB的RAM之後想要獲得更好的遊戲性能,那麼最好還是升級CPU或圖形卡。一個遊戲筆記本會給你的選擇量最大。

更多的資源密集型操作可能需要更多的RAM,32 GB或更多。對於Powerhouse工作站,此內存量是必需的。這非常適合通常在專業環境中需要大量計算能力的工作類型。

關於筆記本電腦的RAM與台式機的RAM

在考慮筆記本電腦RAM需求時要記住的一件事是,筆記本電腦購買後可能很難升級(有時甚至無法升級)。這與電腦形成對比,台式機中的大多數旨在隨時間輕鬆升級。

如何為筆記本電腦購買更多RAM

RAM模塊佔用寶貴的空間,因此筆記本電腦通常僅設計有兩個RAM插槽,購買時通常都佔用現有內存。這意味著出廠時具有4GB內存的筆記本電腦可能安裝了兩個2GB內存模塊。要升級到8GB,您不能只購買4GB的RAM。您將需要刪除現有的兩個2GB模塊,並用兩個4GB模塊替換,這將迫使您丟棄,或嘗試出售現已無用的2GB模塊。

桌上電腦通常具有三個或更多插槽,電腦出廠時通常僅使用其中兩個插槽,從而使升級變得更容易且浪費更少。這就是為什麼我們通常建議您購買一台筆記本電腦,它已經配備了您認為需要的RAM量,而不是依賴於以後的升級功能。

如何選擇合適的RAM

市場上有許多不同種類的RAM,只有為筆記本電腦指定的RAM才可以使用,因此在購物時請務必小心。

這不僅涉及選擇所需的RAM數量,還與匹配多個關鍵規範有關,例如:

  • 類型:SRAM,DRAM和SDRAM是RAM的三種主要類型
  • 數據速率:目前有五種類型的數據速率-SDR,DDR,DDR2,DDR3和DDR4
  • 速度:通常在數據速率之後列出,例如DDR3-800,RAM速度表示CPU能夠訪問該數據的速度
  • 模塊的大小和類型:桌上電腦和筆記本電腦的內存模塊可以具有不同的物理尺寸。桌上電腦通常使用DIMM(雙列直插式內存模塊),而筆記本電腦則使用SO-DIMM(小尺寸雙列直插式內存模塊)。引腳數量(RAM底部的微小觸點)也可能有所不同

如果不確定哪個模塊適合您的電腦,請不要猜測。您可以通過與製造商聯繫來確定。特定型號的支持頁面通常會列出您需要的確切規格。否則,將筆記本電腦帶到當地的零售商那裡,他們的一名員工可以幫助您做出正確的選擇。

購買所需的RAM

購買具有適當RAM數量的筆記本電腦就像買房或公寓,您應該設法找到可以滿足您在可預見的未來而不只是眼前的需求的筆記本電腦。這是因為–與換房很像–如果您發現自己需要的更多,可能既麻煩又無計劃。

但是同時,通過購買更多的東西並沒有獲得太多好處。8GB和16GB之間的區別非常明顯,很少有人發現他們需要額外的內存。切記:如果您實際使用多餘的空間,更多的RAM只會使您的計算機感覺更快。

最後,如果您認為有足夠的RAM,但是計算機感覺運行緩慢,請檢查硬盤驅動器。硬盤容量超過75%的硬盤將開始減慢速度。清除所有未使用的文件或將其傳輸到外部驅動器,以便釋放一些空間,這可能是最簡單的升級。

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