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Author Topic: SD Express Transfer Rate up to 985 MBps And SDUC Card Can Store Up to 128 TB  (Read 64 times)

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Offline Paul2

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SD Express Integrates PCIe and NVMe for up to 985 MBps Transfer Rate

The SD Association announced today the SD7.0 specifications, which introduce the SD Express featuring a PCIe interface and the new 128TB SD Ultra Capacity (SDUC) cards.

The PCIe interface delivers a 985 megabytes per second (MB/s) maximum data transfer rate and the NVMe upper layer protocol enables advanced memory access mechanism, enabling new opportunities for the popular SD memory card. This is a 1.5 faster than the current fastest standard (UHS-III 624MB/s).

In addition, the maximum storage capacity in SD memory cards grows from 2TB with SDXC to 128 TB with the new SD Ultra Capacity (SDUC) card.

"With SD Express we're offering an entirely new level of memory card with faster protocols turning cards into a removable SSD," said Hiroyuki Sakamoto, SDA president.

In addition to performance advancements, SD Express maintain the advantage of SD's backward compatibility and interoperability. The PCIe interface was added in addition to the existing SD (UHS-I) interface, allowing a card with SD Express to operate interchangeably in new SD Express capable hosts as well as billions of existing SD host products in the market today.



SD Express will be initially offered on SDUC, SDXC and SDHC memory cards. The protocol uses the well-known PCIe 3.0 specification and NVMe v1.3 protocols defined by PCI-SIG and NVM Express, respectively, on the second row of pins used by UHS-II cards today. These cards also provide system developers new options offered by PCIe and NVMe capabilities, such as Bus Mastering, Multi Queue (without locking mechanism) and Host Memory Buffer.

The SDA released visual marks to denote SD Express and SDUC memory cards for easy matching with devices' recommendation.




http://cdrinfo.com/Sections/News/Details.aspx?NewsId=70094

wow, SDUC that can store up to 128 Tbytes of data.  That would be in the future where future SDUC card can store data up to that amount.  maybe 15 years or later from now i think.

For now, i think the highest storage capacity SDXC card can only store up to is about 2 TBytes and that card is possibly very expensive.  So i think most users will be satisfied with 128 Gbytes and 256 Gbytes SDXC card for now as its much more affordable.

Also, the newer SDUC card might support SD Express that has feature of PCIe interface which supports transfer speed of up to 985 Mbytes per second or nearly 8 Gbit per second.  That is really fast transfer speed there.  And this SD Express also has another feature of NVMe and not sure what it does but it sounds cool. :)
« Last Edit: June 27, 2018, 10:34:09 PM by Paul2 »

Offline Jumpman

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I DONT KNOW WHAT THAT MEANS

Don't forget about my birthday too.
Who is this anamoly we call Jumpman? How is he able to do what he does and still survive after years of torment? It seems he feeds on the hate, growing with an intense passion to put unassuming members in their place.

Offline Paul2

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lol Jumpman. :laughing:  i won't forget about your birthday today. :)

Offline Titan

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Did you forget about his birthday? Because I did. Also haven't logged in for a while. I should probably do my admin duties......
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Offline Paul2

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i didn't forget about his birthday.  jumpman made a post nearly an hour early before his birthday is coming up to reminds me about it.  actually since jumpman probably lives in the east coast of canada, his birthday is on that day very early in the morning already while its still not midnight yet where i live.

jumpman is just trying to reminds me about it. :)