美光MX500 SSD的PCB改版 - 3C

By Joe
at 2019-11-16T16:31
at 2019-11-16T16:31
Table of Contents
好讀:
https://www.ptt.cc/bbs/PC_Shopping/M.1573893109.A.02D.html
MX500賣了將近兩年
果然還是有改版出現(不然當初那種PCB大小和NAND數量的成本明顯更高)
幾天前幫友人的筆電升級時買了一顆500GB款的
從外殼與SATA接口之間的隙縫看到內部PCB似乎與舊版不同
因此也是動手拆開來檢查,確認是有改版的
這次當然也要像MX200改版那樣做料件分析
給沒時間的人看的PPT
https://i.imgur.com/e0SGzeq.png
先說結論:無須恐慌,請安心大力買下去
===================================
改版前:(2019/1購入)
https://i.imgur.com/RthHIIw.jpg
https://i.imgur.com/rTtAuz0.jpg
改版後:(2019/11購入)
https://i.imgur.com/01V6Q5L.jpg
(主控導熱墊片已先撕下)
https://i.imgur.com/o6QtlsS.jpg
改版後為雙面四顆粒(顆粒密度為單顆128GB)
主控不變,依然是SM2258
DRAM也沒變
最大的差異的是PCB大小僅有39mm*59mm
現有的新版500GB為MT29F1T08EMHAFJ4-3R:A(編號NW913)
M對應的是QDP(四顆die封裝進去)
單顆封裝1Tb=128GB,對應4CE
新版500GB為單面四顆(128GB*4=512GB,剩的12GB拿去做OP)
四顆*4CE=16CE
與原本的500GB用MT29F512G08EEHAFJ4-3R:A(NW912)所開的通道數相同(2CE*8=16CE)
八顆*2CE=16CE
其它容量不確定有沒有改,筆者這顆是2019年第31週生產的
性能沒差(開的通道數都相同)
500GB只是換成了更高密度的顆粒罷了(4 dies,QDP,而單die為32GB)
然後PCB layout精簡化並縮小這樣
超過SLC快取後的folding要滿速依舊得買1TB以上的款式
SM2258的四通道主控*8CE=總共32CE
因為500GB僅有到16CE
===========
有特殊需求需要小PCB,不要殼的話MX500會是個不錯的選擇
另一個小PCB的就是860 EVO了,比MX500新版更小張
但MX500拆殼不需擔心撕壞保固貼紙的風險
--
姊姊 姊姊 我們好像變成簽名檔了
雷姆 雷姆 好像真的是這麼一回事呢
--
https://www.ptt.cc/bbs/PC_Shopping/M.1573893109.A.02D.html
MX500賣了將近兩年
果然還是有改版出現(不然當初那種PCB大小和NAND數量的成本明顯更高)
幾天前幫友人的筆電升級時買了一顆500GB款的
從外殼與SATA接口之間的隙縫看到內部PCB似乎與舊版不同
因此也是動手拆開來檢查,確認是有改版的
這次當然也要像MX200改版那樣做料件分析
給沒時間的人看的PPT
https://i.imgur.com/e0SGzeq.png
先說結論:無須恐慌,請安心大力買下去
===================================
改版前:(2019/1購入)
https://i.imgur.com/RthHIIw.jpg
https://i.imgur.com/rTtAuz0.jpg
改版後:(2019/11購入)
https://i.imgur.com/01V6Q5L.jpg
(主控導熱墊片已先撕下)
https://i.imgur.com/o6QtlsS.jpg
改版後為雙面四顆粒(顆粒密度為單顆128GB)
主控不變,依然是SM2258
DRAM也沒變
最大的差異的是PCB大小僅有39mm*59mm
現有的新版500GB為MT29F1T08EMHAFJ4-3R:A(編號NW913)
M對應的是QDP(四顆die封裝進去)
單顆封裝1Tb=128GB,對應4CE
新版500GB為單面四顆(128GB*4=512GB,剩的12GB拿去做OP)
四顆*4CE=16CE
與原本的500GB用MT29F512G08EEHAFJ4-3R:A(NW912)所開的通道數相同(2CE*8=16CE)
八顆*2CE=16CE
其它容量不確定有沒有改,筆者這顆是2019年第31週生產的
性能沒差(開的通道數都相同)
500GB只是換成了更高密度的顆粒罷了(4 dies,QDP,而單die為32GB)
然後PCB layout精簡化並縮小這樣
超過SLC快取後的folding要滿速依舊得買1TB以上的款式
SM2258的四通道主控*8CE=總共32CE
因為500GB僅有到16CE
===========
有特殊需求需要小PCB,不要殼的話MX500會是個不錯的選擇
另一個小PCB的就是860 EVO了,比MX500新版更小張
但MX500拆殼不需擔心撕壞保固貼紙的風險
--
姊姊 姊姊 我們好像變成簽名檔了
雷姆 雷姆 好像真的是這麼一回事呢
--
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