1) IFMT二代3D NAND的4K讀寫表現比初代3D NAND要好非常多，且二代3D NAND支援Direct-to-Die，大檔寫入時掉速變得不明顯
2) 慧榮的SM2258並不比Marvell四年前出的88SS1074要差，當年88SS1074也許很威，但是別人也在進步，這四年間NAND主控演算技術不知道翻了多少倍，只能說88SS1074老驥伏櫪，志在千里

國外對於MX500的評測在這邊
https://www.anandtech.com/show/12165/the-crucial-mx500-1tb-ssd-review

裡面有提到與前代MX300的比較：

"The MX500 is a more well-rounded product than its predecessor, the Crucial MX300. The MX300's performance takes a serious hit when it is full or subjected to heavy write loads, but the MX500 retains much more of its performance and does a better job of keeping latency under control."

100LED

355分

7樓

100LED

個人積分：355分

文章編號：67799035

連城路李敏鎬 wrote:
昨天在鬼屋看到，是Marvell...(恕刪)

Marvell換成SMI就是要降低成本阿
要降低成本決不會只拿主控開刀
像斷電保護的電容就不見了
跑分啥的只是浮雲(可以作弊譬如三顆星),穩定還是比較重要
要是我寧願買MX300

ZephyrWu

152分

8樓

ZephyrWu

個人積分：152分

文章編號：67804906

100LED wrote:
Marvell換成SMI...(恕刪)

https://www.anandtech.com/show/12165/the-crucial-mx500-1tb-ssd-review

In spite of the completely different controller, the MX500 offers all the standard features of the MX series. TCG Opal encryption is included (making this the first SMI drive we've tested with full self-encrypting drive capability). Micron's partial power loss protection feature for data at rest is preserved, but implemented in a different fashion; they're now also branding it as "power loss immunity". The impact is still the same: you don't get the full protection that is standard for enterprise SSDs, but data that has already been written to the flash will not be corrupted if the drive loses power while writing a second pass of more data to the same cells. This is a feature that can only exist for drives storing more than one bit per memory cell (ie. MLC or TLC, but not SLC), and not using a one-shot programming sequence like is possible with Toshiba/SanDisk 3D NAND.

文中提到雖然處理的形式不同 ,但 MX500 依然跟過去 MX 系列一樣保有"部分"斷電保護