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SSD與HDD:哪一種最適合我的PC?

當今的PC購物者在數據存儲方面面臨一個選擇:您應該購買具有傳統旋轉硬盤驅動器(通常稱為HDD)的價格便宜的系統,還是花更多錢購買更快的全電子固態驅動器或SSD?對於大多數買家而言,答案取決於他們存儲的文件類型,預算以及對數據密集型任務速度的需求。

聯想屢獲殊榮的筆記本電腦台式機具有多種存儲配置。甚至有配備了HDD和SSD的系統,以利用兩種技術的最佳功能。但是,相比HHD,SSD有何優勢?HDD是否比SSD更好?您真的會從雙存儲系統中受益嗎?

固態驅動器(SSD)的優點

固態驅動器或固態硬盤是一種電子存儲選件,它消除了使傳統的磁性硬盤容易受到損壞和機械故障的移動部件。它使用低延遲閃存(如相機和智能手機中的閃存),並將數據存儲在SSD芯片中的連續區域中,並根據需要使用(或擦除和重複使用)。

有幾種方法可以將SSD視為優於HDD:

  • SSD的好處:更快的數據訪問– SSD可以更快地調用數據,因此可以加快啟動時間和應用程序加載。
  • SSD的優勢:更耐用–沒有活動部件,SSD不太容易因跌落而損壞。
  • SSD的優點:重量更輕–與HDD相比,SSD的重量要得多(對於筆記本電腦和其他便攜式設備而言更大)。
  • SSD的優勢:更安靜,更涼爽–與具有旋轉磁盤和機械臂的HDD相比 SSD產生的噪音更少,運行溫度更低。
  • SSD的優勢:數據碎片更少–與HDD相比,SSD上的數據存儲在更大,更緊密的內存部分中。

另一方面,SSD的成本是HDD的兩到三倍。它通常容量較小,並且使用壽命可能較短(SSD是頻繁存儲和檢索大量小數據文件(例如在啟動時)的理想選擇,但對大文件進行相同操作則比較麻煩,因為大文件所需的大量半導體材料只能使用/擦除多次。人們還接受了當SSD發生故障時,與使用HDD相比,更難以挽救其數據。

硬盤驅動器(HDD)的優點

傳統的硬盤驅動器或HDD將數據存儲在一個或多個塗有磁性材料的金屬磁盤上。磁盤以機械方式旋轉,直到特定的數據段(或可用的空白空間)與磁記錄頭對齊為止,該磁記錄頭可以在分配的段上讀取和寫入離散的數據位,該數據段可以是不連續的以最大化存儲量。磁盤的移動會產生與HDD相關的獨特的咔嗒聲,這就是為什麼有時將它們稱為“旋轉”磁盤或驅動器的原因。

這就是為什麼某些用戶認為HDD優於SSD的原因:

  • HDD的好處:更大的容量–容易找到2 TB或更大的多磁盤HDD,但是到目前為止,SSD芯片電路的複雜佈局使它們變得更小(常見的是128 GB或256 GB)。
  • HDD的好處:更低的價格–閃存仍然相對昂貴。按每GB計算,HDD的成本將是類似大小的SSD的一半或三分之一。
  • HDD的優點:使用壽命更長– HDD技術是經過實踐檢驗的,通常可以可靠地運行,除非對設備造成物理損壞。而且,由於它使用的物理過程比電氣過程更多,因此從HDD拯救數據比從SSD拯救數據要容易得多。

不利的一面是,與基於閃存的SSD相比,HDD保存和檢索數據的速度更慢。它也會變得更重,發出更多的噪音,產生更多的熱量並消耗更多的電池電量。因此,儘管HDD仍然是筆記本電腦中的流行組件,但SSD在該類別中正在獲得市場份額。

SSD與HDD:HDD RPM速率重要嗎?

如果您正在查看使用傳統HDD的PC,請注意RPM或每分鐘轉數的規格,這是衡量媒體磁盤在設備中旋轉的速度的度量。當今硬盤驅動器中兩個最常見的RPM速率是5,400 RPM和7,200 RPM。 [有些HDD可以以更快的RPM運轉,但是通常不用於消費類PC。]

7200 RPM硬盤的工作速度是否會比5400 RPM的硬盤快?是。因此,購買7200 RPM HDD是提高新PC性能的一種方法,而無需支付固態驅動器的額外費用。[另一種選擇是Intel的Optane內存加速技術。]但是,專家們對於更快的RPM速率是否會導致數據訪問速度成比例的增長持不同意見。有人說,真正的區別是較小的,有5400 RPM驅動器以100 MB / s的速度運行,有7200 RPM驅動器以120 MB / s的速度運行。

我應該購買雙存儲系統(HDD和SSD)嗎?

PC製造商還生產同時使用HDD和SSD技術的計算機。這些雙存儲系統試圖利用每種存儲的最佳方面:用於需要快速重複訪問數據的SSD,以及用於更適合長期存儲(且訪問頻率較低)的材料的HDD。

雙存儲HDD / SSD系統的優點是什麼?通過將操作系統置於SSD上,初始啟動時間將大大縮短,因為與HDD相比,系統可以更快(幾乎立即)訪問關鍵啟動文件。根據SSD的大小,您還可以將最常用的軟件程序和個人文件放在SSD上。同時,您可以使用更大的HDD來存儲較大的文件,例如不經常訪問的照片,視頻和遊戲。

準備好進行選擇了嗎?聯想使您輕鬆找到所需的SSD或HDD型號。只需調用我們的筆記本電腦台式機頁面,然後使用“硬盤驅動器”下拉列表為您選擇的特定存儲選項過濾結果。

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