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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和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:
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。
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:
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。
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。
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或台式機頁面,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。
The product/accessories photo is for reference only
Above machine specification information is for reference only and it refers to the highest configuration which the machine is compatible with, yet some specific configuration or related accessories may not available in Hong Kong due to reasons includes but not limited to hardware supply limitation, country (local market) regulation and so on. Please refer to the specific model description for configuration detail before you place order.
Actual battery life may vary depending on application usage, settings, features or tasks selected, network configuration, operating temperature and many other factors.
Limits: Lenovo reserves the right to limit the number of units to a particular product that a customer may buy at any one time.
Availability: Offers, prices, specifications and availability may change without notice. Lenovo is not responsible for photographic or typographic errors.
General System Information: Review key information provided by Microsoft that may apply to your system purchase, including details on Windows 10, Windows 8, Windows 7, and potential upgrades/downgrades. Lenovo makes no representation or warranty regarding third-party products or services.
Pricing: Does not include shipping and handling fees. Reseller prices may vary. Savings referenced off regular Lenovo web prices.
Warranty Service: The Service delivery will be determined by the destination country/region subject to Service capabilities and parts availability in the destination country/region.
Lenovo makes no representation or warranty regarding third party products or services. The Lenovo Limited Warranty applies only to Lenovo hardware products purchased for your own use, and does not transfer upon resale.
Trademarks: Lenovo, ThinkPad, ThinkCentre and the Lenovo logo are trademarks of Lenovo. Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation. Ultrabook, Celeron, Celeron Inside, Core Inside, Intel, Intel Logo, Intel Atom, Intel Atom Inside, Intel Core, Intel Inside, Intel Inside Logo, Intel vPro, Itanium, Itanium Inside, Pentium, Pentium Inside, vPro Inside, Xeon, Xeon Phi, Xeon Inside and Intel Optane are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries. Other company, product or service names may be trademarks or service marks of others.
An estimated ship date will be posted on our order status site after your order is placed. The date reflected above does not determine when your order will ship since inventory status may change before your order is final and because items may be held until all products on the order are ready to ship. To obtain the latest information about the availability of a specific part number, please call the phone number listed in the masthead at the top of this page. A flat charge for shipping & handling may apply for certain orders, as indicated on the Checkout page.
The product/accessories photo is for reference only
Above machine specification information is for reference only and it refers to the highest configuration which the machine is compatible with, yet some specific configuration or related accessories may not available in Hong Kong due to reasons includes but not limited to hardware supply limitation, country (local market) regulation and so on. Please refer to the specific model description for configuration detail before you place order.
Actual battery life may vary depending on application usage, settings, features or tasks selected, network configuration, operating temperature and many other factors.
Limits: Lenovo reserves the right to limit the number of units to a particular product that a customer may buy at any one time.
Availability: Offers, prices, specifications and availability may change without notice. Lenovo is not responsible for photographic or typographic errors.
General System Information: Review key information provided by Microsoft that may apply to your system purchase, including details on Windows 10, Windows 8, Windows 7, and potential upgrades/downgrades. Lenovo makes no representation or warranty regarding third-party products or services.
Pricing: Does not include shipping and handling fees. Reseller prices may vary. Savings referenced off regular Lenovo web prices.
Warranty Service: The Service delivery will be determined by the destination country/region subject to Service capabilities and parts availability in the destination country/region.
Lenovo makes no representation or warranty regarding third party products or services. The Lenovo Limited Warranty applies only to Lenovo hardware products purchased for your own use, and does not transfer upon resale.
Trademarks: Lenovo, ThinkPad, ThinkCentre and the Lenovo logo are trademarks of Lenovo. Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation. Ultrabook, Celeron, Celeron Inside, Core Inside, Intel, Intel Logo, Intel Atom, Intel Atom Inside, Intel Core, Intel Inside, Intel Inside Logo, Intel vPro, Itanium, Itanium Inside, Pentium, Pentium Inside, vPro Inside, Xeon, Xeon Phi, Xeon Inside and Intel Optane are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries. Other company, product or service names may be trademarks or service marks of others.
An estimated ship date will be posted on our order status site after your order is placed. The date reflected above does not determine when your order will ship since inventory status may change before your order is final and because items may be held until all products on the order are ready to ship. To obtain the latest information about the availability of a specific part number, please call the phone number listed in the masthead at the top of this page. A flat charge for shipping & handling may apply for certain orders, as indicated on the Checkout page.