Micron推出2400系列SSD:壽命比TLC短一半 - 3C
By Jessica
at 2022-01-13T00:01
at 2022-01-13T00:01
Table of Contents
繼首發量產176層堆疊的TLC快閃記憶體之後,Micron日前又首發了176層QLC快閃記憶體
其推出的2400系列SSD硬碟,用上了新一代快閃記憶體及PCIe 4.0
不過速度最高4500MB/s,2TB容量的TBW壽命為600TB,只有TLC快閃記憶體的一半
Micron 2400系列SSD雖然上了PCIe 4.0
但QLC快閃記憶體並不以性能見長,主要針對高CP值用戶端應用,包括桌上型電腦及筆記
型。
有512GB、1TB及2TB三種,規格支援M.2 2230/2242/2280,其中30mm版依然有最高2TB容量
這是其優勢。性能方面2400系列硬碟讀取4500MB/s、寫入4000MB/s,隨機讀取650K IOPS
、隨機寫入700K IOPS。
壽命方面2400系列512GB版是150TBW、1TB版是300TBW、2TB版是600TBW
這個寫入壽命在QLC中還不錯。但與現有的TLC快閃記憶體相比,2TB版600TBW只有一半的
壽命
不過Micron 176層QLC快閃記憶體相對上代的96層QLC快閃記憶體還是有進步的
IO輸送量提升33%,延遲降低24%,待機功耗降低了50%。
總體來看176層QLC快閃記憶體製造的SSD硬碟性能及壽命與頂級PCIe 4.0硬碟差距明顯
不過勝在功耗低、容量大,體積小巧、成本上有優勢,適合筆記型電腦以及中低階桌上型
電腦SSD。
來源
https://www.cnbeta.com/articles/tech/1224887.htm
XF編譯
https://www.xfastest.com/thread-258060-1-1.html
美光加持 坐等 GEN4 QLC 標準品 Crucial 便宜賣
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