Western Digital Black SN7100 4 TB Variant Due for Imminent Release

[T0@st]

Last November, Western Digital introduced its WD_BLACK SN7100 NVMe SSD series—advertised as utilizing their: "latest TLC 3D NAND." This new SSD design offers: "speeds up to 7,250 MB/s read and 6,900 MB/s write (for 1 and 2 TB models), providing up to a 35% performance boost over our previous generation SSD." The manufacturer's official press material did not explicitly state that the SN7100 would serve as a natural replacement for their well-regarded SN770 (2022) product family, but W1zzard's recent glowing review (of the 2 TB variant) refers back to the forebear on multiple occasions.

As low-key teased by last November's press announcement, a 4 TB WD_BLACK SN7100 model is arriving in 2025—freshly updated listings indicate an imminent launch at retail/e-tail. Interestingly, WD's SN770 range never reached beyond a 2 TB barrier. Search engine results—when inputting the "WDS400T4X0E-00CJA0" identifier—point to a "March 2025" SN7100 series data sheet, and SanDisk's UK store accepting pre-orders for £255.99 (~$332 USD). Availability status is currently designated as: "within 1 week." Western Digital's spec comparison table (see below) proudly showcases the 4 TB variant's impressive endurance (TBW) credential: 2400. Its lower capacity siblings (1 TB and 2 TB) hold slight advantages in terms of read and write speeds. TechPowerUp's resident SSD reviewer deemed the SN7100 2 TB model worthy of an "Editor's Choice" badge, but wished for a larger capacity option. We hope that a 4 TB evaluation sample will make its way to W1zz HQ in the near future.



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[Assimilator]

£250+ is waaay too expensive when other 4TB NVMEs are regularly going for around the £210 mark. WD needs to get the price down to sub-£200 levels to have a winner.

 

[lexluthermiester]

£250+ is waaay too expensive when other 4TB NVMEs are regularly going for around the £210 mark. WD needs to get the price down to sub-£200 levels to have a winner.

This is a premium offering using Micro's new 276layer TLC nand which is supposed to have much better durability and reliability while at the same time being blazing fast. This is not a "get it for peanuts" kind of drive..

 

[Snoop05]

This is a premium offering using Micro's new 276layer TLC nand which is supposed to have much better durability and reliability while at the same time being blazing fast. This is not a "get it for peanuts" kind of drive..

Not sure how you where you got that info but for start, like pretty much every WD/Sandisk drive, at least the 2TB variant was using Kioxia NAND (no suprise there as they have joint venture with WD), to be exact its BiCS8 218-layer TLC (according to Techpowerup) and as you can look at the photos the PCB is mostly empty, meaning they could fit it into 2242, maybe even 2230, OR slap on more NAND chips which sounds like like lowest effort way to get higher capacity model.

 

[lexluthermiester]

Not sure how you where you got that info but for start, like pretty much every WD/Sandisk drive, at least the 2TB variant was using Kioxia NAND (no suprise there as they have joint venture with WD), to be exact its BiCS8 218-layer TLC (according to Techpowerup) and as you can look at the photos the PCB is mostly empty, meaning they could fit it into 2242, maybe even 2230, OR slap on more NAND chips which sounds like like lowest effort way to get higher capacity model.

Until they show the parts and verify the part numbers, I'm not buy that. There is data elsewhere which suggests that WD is utilizing performance NAND where-ever they can find it, not just using their own home-grown stuff.

 

[bonehead123]

This is a premium offering using Micro's new 276layer TLC nand which is supposed to have much better durability and reliability while at the same time being blazing fast. This is not a "get it for peanuts" kind of drive..

Perhaps, but even though they're not the "latest & greatest" (but still excellent by any means), I'll just continue using & building with the butt load of 4TB 850x's that I bought in late '24 at just a little more than 1/2 of the prices for these new drives...

 

[_roman_]

Is this now a SANDISK or WD or something else branded product?

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn7100-nvme-ssd.pdf

System compability windows 10+

I'll buy something from another brand like Kingston which works flawless in any scenario

 

[Caring1]

Is this now a SANDISK or WD or something else branded product?

https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn7100-nvme-ssd.pdf

System compability windows 10+

I'll buy something from another brand like Kingston which works flawless in any scenario

Still Sandisk as far as I'm aware.