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  • WD_BLACK™ SN850X NVMe™ SSD POWERED BY SANDISK™
  • Front. WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe - Black.
  • Alt View 11. WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe - Black.
  • Alt View 12. WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe - Black.
  • Alt View 13. WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe - Black.
  • Alt View 14. WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe - Black.
  • Alt View 15. WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe - Black.
  • Alt View 16. WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe - Black.
  • Insane Speeds Up to 7,300 MB/s (1) Based on read speed. 1 MB/s = 1 million bytes per second. Based on internal testing; performance may vary depending on host device, usage conditions, drive capacity, and other factors.
  • Minimized Latency Loads Graphics Fast
  • Capacities from 1TB to 4TB2 come in the form of a WD_BLACK SN850X WD Digital Western SSD NVMe. The SN850X offers 1GB/s read speeds and 1TB of storage, with actual user capacity depending on the operating environment.
  • GAME MODE 2.0 DELIVERS PC PERFORMANCE-BOOSTING FEATURES Dechboard 15.26 SThip://wdscddtunb2wdt.com/dwhbowd/ Model WD\_BLACK SN85eX NVM+ SSD G Fizmware Version: A0814UC0 Drive Heaith: Nozmal Security: Frozen 7 Status Performance Teels Software Serrings OPTIONS Gene Felders Select device WD\_BLACK SNEsex M O Saning Rode 2.8 NUTO ON OFF Settings WD\_BLA D.BLACK P10 Gam Xbox One: Your gami always on the gol Top-tier external HDD b specifically for gamers k expand the potential of so they can drive their way they choose APPLICATION UPDATE GAMING MODE 2.0 Specify folders for Dashboard to watch for gome launches. Selected Bame Folders Cr/Program Files [x86]/Stean/steanacon/connon ADD FOLDER x SIBUNTH & I gwing & 1 Pytnia = C./Program Files/Epie Ganes x Lear.More C./Program 11es/Oculus/Software x C/Rlet Cames x Shortcuts HINDONS 01ix MANA D./Steanlibraty/steanacon/connon x KENDOWS SYSTEM PRO WINDOWS DEVICE K SUP 2021 Western Digital Con
  • NEAR-MAX PCIe N850X GEN43 SPEEDS NVMeTM SSD [www.wdc.com](http://www.wdc.com) - WD\_BLACK SN850X Western Digital. Works with PCle B50X One notch slots only Sen4 Digital. (3) PCIe Gen4 storage technology requires a compatible motherboard. WD\_BLACK SN850X is backwards-compatible with PCIe Gen3.
  • SN850X overview video video 0 minutes 48 seconds

WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe

Model:
WDBB9G0040BNC-WRSN
SKU:
6512129
Highly rated by customers for:
Your price for this item is $379.99
The comparable value price is $610.99

Customer reviews

Rating 4.9 out of 5 stars with 478 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.7 out of 5 stars

  • Quality

    Rating 4.9 out of 5 stars

  • Ease of Use

    Rating 4.9 out of 5 stars

Pros mentioned filter

Cons mentioned filter

98%would recommend to a friend

Customers are saying

Customers often highlight the BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe's impressive storage capacity and excellent performance. Many praise its ease of installation and compatibility with various systems, including the Playstation 5. While some users note that the drive can run warm, the positive feedback on speed, capacity, and ease of use outweighs this concern for most buyers. The drive is also frequently lauded as offering great value for its price.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 13 Showing 241-260 of 478 reviews
  • Pros mentioned:
    Performance

    Super fast and reliable.

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Better than I expected. Very happy with the WD BlackSN850X.

    I would recommend this to a friend
  • Pros mentioned:
    Price

    SSD purchase

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product for the price. Would recommend to my friends

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Serves me well

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great performant internal drive for fast file transfers/installs and space for large applications and assets. Remember to set it up and format it like other drives (search online).

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    good

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    So fa so good. I used it with the enclosure as the external hard drive.

    I would recommend this to a friend
  • Pros mentioned:
    Speed

    M.2 will last for a long time!

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Blazing fast! This is probably the best deal I got for 4TB. Thank you bestbuy

    I would recommend this to a friend

  • Better than the heatsink one

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Chose to buy this storage because it was way cheaper than the one with the heatsink. Bought the heatsink separate, easily installed it and have had no problems with it. I’m pleased and saved a couple of bucks!

    I would recommend this to a friend
  • Pros mentioned:
    Storage

    WD Black 4tb

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I just installed this in a new PC. It's a 4tb WD Black, replacing a 1TB WD Blue, and it works great!

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Nice Drive, great price

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The drive works great and was very easy to install. I have no problems. Western Digital has always been a great product.

    I would recommend this to a friend
  • Pros mentioned:
    Storage

    More sad nvme

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Perfect upgrade for my asus gaming laptop can store all my games.

    I would recommend this to a friend
  • Pros mentioned:
    Storage

    Great for PS5

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Absolutely what I needed, slapped a heatsink on it and now the PS5 Pro is Happy

    I would recommend this to a friend
  • Pros mentioned:
    Speed

    Fast!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Amazing speed! I had another m.2 drive Generation 3, and setting my computer to take advantage of the full speed of a Gen4 was almost double the speed as before... Make sure you use the right settings and hardware to take advantage of Generation 4

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Would buy again

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very easy install and worked immediately, no issues.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Fast and reliable

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    After purchasing 4 of these drives over the past year or so, I can confidently state its performance is top notch and that, so far, reliability has not been an issue. Great value for the money, just try to catch it when it's on sale.

    I would recommend this to a friend

  • No issues other than missing M.2 screw

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Got it on sale and have had no issues with the SSD itself. The only issue I had was that it didn't come with an M.2 screw to securely mount the card onto the M.2 standoff in my motherboard- so if you're planning on buying this, get a cheap little M.2 screw (and an M.2 standoff if your motherboard is missing that) or a heatsink for the SSD that you know will mount onto the M.2 standoff.

    I would recommend this to a friend
  • Pros mentioned:
    Speed

    Works great

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I brought 2 work great in my TRX40 motherboard. have them on a add-in card and my motherboaed supports bifurcation able to them in raid 0 if I need to just not ablr to boot windows 11 pro from them. I have them running in 4tb mode but called WD support said raid 0 is supported by 2 drives only which works.

    I would recommend this to a friend
  • Pros mentioned:
    Speed

    Worth it

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    High capacity, high speeds, high quality! Overall a solid choice for a solo boot drive/mass storage drive. Or as a secondary, tertiary or even redundant drive if you have the money and desire lol. Can’t go wrong with the WD brand too!

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Good quality

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Perfect upgrade, excellent quality and easy to install made a big difference in use and glad I picked this up.

    I would recommend this to a friend
  • Pros mentioned:
    Speed

    Amazing drive

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Its great for a main storage/photo drive. It does a great job and is fast in download and transfers

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Quality and performance

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The SN850X line are really the best, most reliable gen 4 NVME drives you can buy. Western Digital did their homework on this design.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    No regrets

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The performance has been exactly as advertised and has stayed fairly cool with a passive heat sink from my motherboard. I will likely be buying another for my second m2 slot as well.

    I would recommend this to a friend
Page 13, Showing 241-260 of 478 reviews
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