Customer Reviews for WD BLACK SN850X 4TB M.2 PCI Express Internal Solid State Drive, TLC (WDS400T2X0E-00BCA0)
WD BLACK SN850X 4TB M.2 PCI Express Internal Solid State Drive, TLC (WDS400T2X0E-00BCA0) is New at Staples
Item # : IM1NT7214
Model # : WDS400T2X0E-00BCA0
WD BLACK SN850X is a top-tier Gen4 NVMe SSD built for elite gaming.
- Engineered as an internal NVMe on PCIe Gen4 x4 for high-end gaming.
- Reaches 7,300/6,600 MB/s for ultra-fast loads and saves.
Price is $1,875.99
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38 reviews
Most helpful positive review
Posted Dec 28, 2025
Lightning speeds, great value
I ran out of storage on my iMac, so I purchased 2 of the WD Black SN850X 4TB SSDs. I use one as my main storage and the second is my TimeMachine backup. Speed tests confirm these SDDs are FAST R/W speeds! Very impressed and happy.
VS
Most helpful critical review
Posted Jun 2, 2024
Don't ever do business with WD
I didn't get it. Even though it said it was supposed to be in the package. Not to mention it took them over a month to ship it and when I received the package it was on the packing slip but not in the box. To top it off, it's been over 2 weeks since I contacted them that I didn't get it and they won't get back to me even though I've contacted them countless times
Pedro17
Reviewed at:
SanDisk
Posted Dec 28, 2025
Lightning speeds, great value
I ran out of storage on my iMac, so I purchased 2 of the WD Black SN850X 4TB SSDs. I use one as my main storage and the second is my TimeMachine backup. Speed tests confirm these SDDs are FAST R/W speeds! Very impressed and happy.
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Abe E
Verified Buyer
Reviewed at:
SanDisk
Posted Aug 30, 2025
Highly recommended
As advertised. Fast speed. Works well with RAID. Good quality product
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wtydzd
Verified Buyer
Reviewed at:
SanDisk
Posted Apr 9, 2025
Excellent for working and gaming
Fast, good quality. Although now there are new products like pcle 5.0*4, SN850X is still good enough for daily gaming and working.
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Bob Joe
Reviewed at:
SanDisk
Posted Mar 25, 2025
Fast, reliable.
On par with all the greatest.
Bit hotter than other PCI-e 4x on IDLE. But still less than Patriot Viper or KC3000.
Bit hotter than other PCI-e 4x on IDLE. But still less than Patriot Viper or KC3000.
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MDM10
Verified Buyer
Reviewed at:
Western Digital
Posted Jul 2, 2024
Blistering Speeds/Easy Install
Got two of these, one for my recent ASUS ROG Strix laptop and my wife's couple year older model laptop of the same. She has PCIe 3.0, so she didn't get the full speeds that I get on my PCIe 4.0 laptop, as was expected. That's fine as this drive will move into new laptops down the road with its massive storage size, ease of install, crazy speeds, and lack of any issues. ...
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Alex j
Verified Buyer
Reviewed at:
Western Digital
Posted Jun 19, 2024
It works great!
Great performance! The speed is awesome, I recommend a heatsink because when you use it a lot it's super hot too!!
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jimithing40
Verified Buyer
Reviewed at:
Western Digital
Posted Jun 16, 2024
The best all around SSD.
Fast, Trustworthy and Durable. The only brand I've ever trusted.
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Jamison h
Verified Buyer
Reviewed at:
Western Digital
Posted Jun 2, 2024
Don't ever do business with WD
I didn't get it. Even though it said it was supposed to be in the package. Not to mention it took them over a month to ship it and when I received the package it was on the packing slip but not in the box. To top it off, it's been over 2 weeks since I contacted them that I didn't get it and they won't get back to me even though I've contacted them countless times
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Response from Staples :
Hello,
We are sorry for the inconvenience caused to you. We would like to investigate the matter. To do so, we request you to please share the order details information and your email address so that we can look into the concern to share relevant information.
You may also get in touch with our technical support team directly to elaborate on the issue along with error screenshots. You can open a support ticket at (https://support-en.wd.com/app/askweb) We will be happy to assist you.
June 5, 2024
Chaosjs0010
Verified Buyer
Reviewed at:
Western Digital
Posted May 9, 2024
Excellent Product...
Excellent product across the board.. I have had no problems whatsoever with this product as of yet!
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Heshmon
Verified Buyer
Reviewed at:
Western Digital
Posted May 5, 2024
What a pleasure!
It's the fastest storage I've had the pleasure to work with.
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iTGuy
Verified Buyer
Reviewed at:
Western Digital
Posted Mar 24, 2024
Good value
Easy to install, lightning fast. Using as primary drive on PC.
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00DeekX
Verified Buyer
Reviewed at:
Western Digital
Posted Dec 24, 2023
Exceptionally fast!
Supremely fast! 4TB is the perfect size for a large game library!
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Anon1234
Verified Buyer
Reviewed at:
Western Digital
Posted Nov 15, 2023
Superior Upgrade
Purchase both a 2TB and 4TB version of these Gen4 drives and easily installed on an ASUS Z790 motherboard with an Intel 14900K processor. A superior, well priced upgrade from my previous Gen3 version and striped SATA SSD's.
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IDWW
Verified Buyer
Reviewed at:
Western Digital
Posted Sep 28, 2023
My Go-To for a 4TB M.2
My MB has multiple M.2 slots with heatsinks. So I splurged with this 4TB. Can't tell the minuscule speed difference between this and my old SSD but I'm happy with this setup
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Alex T
Verified Buyer
Reviewed at:
Western Digital
Posted Sep 12, 2023
Great Product
Received product in perfect condition, works as intended, and performs excellently.
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Verified Buyer
Reviewed at:
Western Digital
Posted Aug 10, 2023
nice nvme ssd
excellent price good performance I bought it for my ps5 and it worked very well
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NENE
Verified Buyer
Reviewed at:
Western Digital
Posted Aug 10, 2023
Great For PS5
Works great, I’m waiting on the 8GB for the ps5 no lag runs smooth
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ar38070
Verified Buyer
Reviewed at:
Western Digital
Posted Aug 1, 2023
fast drive
Fast, good price, lots of space, one of the best so far
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angrybean
Verified Buyer
Reviewed at:
Western Digital
Posted Jul 25, 2023
I didn't get my product and still need to pay for
I didn't get my product and still need to pay for it
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Response from Staples :
Hello,
We're sorry to hear about your user experience with WD_Black SN850X NVMe Gaming Storage and appreciate your time for providing the review.
We are extremely sorry for the inconvenience .This is not the service we ever want for our customers, this usually never happens. Please allow us to make it correct for you. You could raise a concern ticket on the given link, the customer support team get back to you in a earliest possible time . Please refer to the link mentioned: https://support-en.wd.com/app/ask/session/
All our products must pass our stringent quality standards before leaving our factory to be free from defects in materials and craftsmanship. We stand behind our products throughout the device's factory warranty period. We would appreciate the opportunity to assist you further. You can contact us by phone below and provide your details.
Need Help? Please see our "'Contact Us" page for information.
July 25, 2023
Verified Buyer
Reviewed at:
Western Digital
Posted Jul 5, 2023
I really like these drives!
Nice little drive. So glad I bought two. Two of the 4 TB drives! I really like these jobs
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