They should start rating these giant cards with "time to fill at sustained write" and "time to empty at sustained read" labels. Also, why isn't this UHS-II? I get that not much real-world equipment supports the standard, but it does exist ...
Are there UHS-|| microSD cards? "Also, why isn't this UHS-II?" because "SanDisk is outright bottlenecked by the UHS bus". The UHS bus is the interface on the NAND itself. So it would not matter if you had chip connected to a faster port say thunderbolt 3 port because that's not where the speed limit is.
"The Secure Digital Ultra Capacity (SDUC) format, described in the SD 7.0 specification, and announced in June 2018, supports cards up to 128 TB and offers speeds up to 985 MB/s, regardless of form factor, either micro or full size, or interface type including UHS-I, UHS-II, UHS-III or SD Express. The SD Express interface can also be used with SDHC and SDXC cards."
Should be noted that this is useless in most devices because they have limits on actual SD card size. Very rarely do you even see stuff support 64 or 128gig let alone this.
Galaxy S10 says 512GB cards are supported. I'm not sure if that is because that is the limit on what cards were available and what QA process was being used.
Tons of devices only "support" 32GB or whatever but I have yet to find a device where 128GB cards actually don't work. What they usually actually mean is that only FAT32 works so these larger cards will have to be reformatted as they tend to ship as exFAT from the factory.
That's definitely not true unless you actually believe devices that support microSDXC, an almost decade old standard, are very rare. Even the Galaxy S2 had a microSDXC slot. And any device that supports microSDXC should take any card up to 2TB. Devices' specs usually say they'll accept up to whatever the highest capacity card is available at the time. So for instance, everywhere you look the specs for the Galaxy S4 says it'll take up to a 64GB card. But of course, it can take 128GB+ no problem. This is probably just companies playing it safe and avoiding customer confusion.
Your user name strikes again. I echo what the others have said. On that note, I have yet to come across a device that claims to work with 32GB mSDs and does not handle my 256GB or 400GB ones. PS Vita adapter and old 3DS XL working fine with those capacities, making longer holidays without internet access less of a bore.
Very rarely? A recorder I lost last year(which was a 2011 model) supported up to 32GB, but its successor launched in 2015 (IIRC) already supported SDXC at least up to 128GB(tested).
I'm imagining a NAS the size of a pack of gum with enough of these in it to create a nice 6-10 TB RAID 10 array with the power consumption of a single SSD... *swoon*
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Valantar - Thursday, May 16, 2019 - link
They should start rating these giant cards with "time to fill at sustained write" and "time to empty at sustained read" labels. Also, why isn't this UHS-II? I get that not much real-world equipment supports the standard, but it does exist ...Skeptical123 - Thursday, May 16, 2019 - link
Are there UHS-|| microSD cards? "Also, why isn't this UHS-II?" because "SanDisk is outright bottlenecked by the UHS bus". The UHS bus is the interface on the NAND itself. So it would not matter if you had chip connected to a faster port say thunderbolt 3 port because that's not where the speed limit is.wrkingclass_hero - Thursday, May 16, 2019 - link
How many total drive writes would you wager this would last before failure?deil - Thursday, May 16, 2019 - link
15? in real loads where you don't fill all and delete, fill again without load leveling it would be insanely low.porcupineLTD - Thursday, May 16, 2019 - link
If it's TLC it should be able to handle a few hundred TDW.29a - Thursday, May 16, 2019 - link
Why do you think they wouldn't do some sort of wear leveling?baka_toroi - Thursday, May 16, 2019 - link
Isn't SDXC's size limit 2 TB? What will come after it?nandnandnand - Thursday, May 16, 2019 - link
https://en.wikipedia.org/wiki/SD_card#SDUC"The Secure Digital Ultra Capacity (SDUC) format, described in the SD 7.0 specification, and announced in June 2018, supports cards up to 128 TB and offers speeds up to 985 MB/s, regardless of form factor, either micro or full size, or interface type including UHS-I, UHS-II, UHS-III or SD Express. The SD Express interface can also be used with SDHC and SDXC cards."
CharonPDX - Sunday, May 19, 2019 - link
microSD Express. Which is basically NVMe interface in the microSD form factor.imaheadcase - Thursday, May 16, 2019 - link
Should be noted that this is useless in most devices because they have limits on actual SD card size. Very rarely do you even see stuff support 64 or 128gig let alone this.Targon - Thursday, May 16, 2019 - link
Galaxy S10 says 512GB cards are supported. I'm not sure if that is because that is the limit on what cards were available and what QA process was being used.notashill - Thursday, May 16, 2019 - link
Tons of devices only "support" 32GB or whatever but I have yet to find a device where 128GB cards actually don't work. What they usually actually mean is that only FAT32 works so these larger cards will have to be reformatted as they tend to ship as exFAT from the factory.GTRagnarok - Thursday, May 16, 2019 - link
That's definitely not true unless you actually believe devices that support microSDXC, an almost decade old standard, are very rare. Even the Galaxy S2 had a microSDXC slot. And any device that supports microSDXC should take any card up to 2TB. Devices' specs usually say they'll accept up to whatever the highest capacity card is available at the time. So for instance, everywhere you look the specs for the Galaxy S4 says it'll take up to a 64GB card. But of course, it can take 128GB+ no problem. This is probably just companies playing it safe and avoiding customer confusion.Death666Angel - Thursday, May 16, 2019 - link
Your user name strikes again.I echo what the others have said. On that note, I have yet to come across a device that claims to work with 32GB mSDs and does not handle my 256GB or 400GB ones. PS Vita adapter and old 3DS XL working fine with those capacities, making longer holidays without internet access less of a bore.
s.yu - Thursday, May 16, 2019 - link
Very rarely? A recorder I lost last year(which was a 2011 model) supported up to 32GB, but its successor launched in 2015 (IIRC) already supported SDXC at least up to 128GB(tested).Targon - Thursday, May 16, 2019 - link
I wonder if the full capacity would show up in a Galaxy S10, or if the OS/drivers would limit the available storage space.HardwareDufus - Thursday, May 16, 2019 - link
I need this for my RaspberryPi 3+ streaming media server.Alistair - Thursday, May 16, 2019 - link
Can get a 512GB card for $85 instead. So they have a long way to go with a price drop before most anyone should buy one :)letmepicyou - Tuesday, May 21, 2019 - link
I'm imagining a NAS the size of a pack of gum with enough of these in it to create a nice 6-10 TB RAID 10 array with the power consumption of a single SSD...*swoon*