
Strap in for breakneck gaming speeds with the WD_BLACK SN850X NVMe internal SSD. Crush load times and slash throttling, lagging, and model pop-ins for a smooth, fast experience that lets you compete at your absolute peak. This purpose-built gaming drive comes in the capacity of 4TB. With the advanced features of Game Mode 2.0 (Windows only) plus speeds that approach the limits of the PCIe Gen43 interface, the WD_BLACK SN850X NVMe SSD delivers top-tier performance to keep you playing, streaming, recording, and dominating the game.
Q: What type of interface does this WD SSD use?
A: This SSD uses a PCIe Gen 4 x4 (NVMe) interface for easy connection to your computer.
Q: What is the storage capacity of this WD SSD?
A: This WD_BLACK SN850X SSD has a storage capacity of 4TB.
Q: Does this WD SSD come with a heatsink?
A: No, this SSD does not come with a heatsink.
Q: How long is the warranty on this WD SSD?
A: This WD_BLACK SN850X SSD comes with a 5-year warranty.
Q: What is the maximum data transfer rate of this WD SSD?
A: This SSD has a data transfer rate of up to 7300MB/sec.
A: No but you can get a good one for under $15
A: Yes. Just put a 4 TB in a PS5 and no problem so far. 6500 MB/s read speed reported upon a very quick format.
Q: Is this compatible with an Asus Rog Ally X?
A: Yes it took me maybe 10 minutes to swap out. You may want to get some thermal tape, I just used the piece that was on the ssd in the device but I don't know if that's advisable or not. I have had no temperature issues my device typically stays right around 80c while playing intensive game on turbo plugged in.

Strap in for breakneck gaming speeds with the WD_BLACK SN850X NVMe internal SSD. Crush load times and slash throttling, lagging, and model pop-ins for a smooth, fast experience that lets you compete at your absolute peak. This purpose-built gaming drive comes in the capacity of 4TB. With the advanced features of Game Mode 2.0 (Windows only) plus speeds that approach the limits of the PCIe Gen43 interface, the WD_BLACK SN850X NVMe SSD delivers top-tier performance to keep you playing, streaming, recording, and dominating the game.

Reach max performance of PCIe 4.01. Experience longer-lasting, opponent blasting speed. The in-house controller's smart heat control delivers our best power efficiency while maintaining ferocious performance that always keeps you at the top of your game.

Crush load times and slash throttling, lagging, and texture pop-ins with the WD_BLACK SN850X NVMe SSD. Available in capacities of 1TB up to 8TB, this gaming drive is built for top-tier performance. With 7,300MB/s speeds (1TB - 4TB models) and a heatsink option to maintain performance, you can enjoy your favorite games without worrying about lag. Plus, the downloadable WD_BLACK Dashboard (Windows only) can automatically turn on Game Mode 2.0 features. The WD_BLACK SN850X NVMe SSD delivers a smooth, fast experience —and the innovations that let you compete at your absolute peak.

Strap in for breakneck gaming speeds with the WD_BLACK SN850X NVMe internal SSD. Crush load times and slash throttling, lagging, and model pop-ins for a smooth, fast experience that lets you compete at your absolute peak. This purpose-built gaming drive comes in the capacity of 2TB. With the advanced features of Game Mode 2.0 (Windows only) plus speeds that approach the limits of the PCIe Gen43 interface, the WD_BLACK SN850X NVMe SSD delivers top-tier performance to keep you playing, streaming, recording, and dominating the game.
| Pros for WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe | |||
|---|---|---|---|
| Speed, Storage, Performance, Ease of use, Price | Speed, Performance, Storage, SSD, Installation | There were no pros for this product— | Speed, Performance, Storage, Ease of use, Price |
| Cons for WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe | |||
| Heat | Heat, Price | There were no cons for this product— | Heat, Firmware, Warranty |
Customers commend the BLACK SN850X 4TB Internal SSD for its speed, ample storage, and great performance. Users also appreciate its ease of use and installation, considering it a perfect SSD M.2 hard drive with wide-ranging compatibility. Some customers noted the absence of a heat sink as a potential drawback. Overall, many find it to be a great product for the price.
Excellent price for a high end nvme. I got this for my gaming laptop and it performed well. Specs is right up there with the best of the best. I was also able to get it during the sale and got it for pretty low price right before the new year. Prices for ssd are excepted to drop, but for now I should be good for plenty of games on my gaming laptop. Speed is very fast. See picture of the crystalmark. Definitely not the fastest at sequential, but the IOPs is out of this world and that is what really matters when you are doing a lot of small random files. I highly recommend this for anyone who wants the best right now for a reasonable price. My only gripe is this is a 2 sided nvme meaning there are flash chips on both sides of the board. This might not be a big issue for some but for me, it made the chip a bit chunky. I compensated on my laptop by not screwing it too tightly and use light threadlocker to prevent the screw from coming loose.
AIGamingCryptoBot Posted
Installed the drive with a Thermalright HR-09 2280 SSD Heatsink to keep the heat down and try to maintain the longevity of the drive. With the heatsink installed, the drive idles around 100F and I saw it go up to 137F while running CrystalDiskMark. After installing the first thing I did was install the SanDisk Dashboard software to check for a firmware update but the drive came with the latest firmware. You can buy faster Gen5 M.2 drives, but unless your computer supports the faster protocol, it will just default back to Gen4 speeds. Don't bother. So far quite impressed with the drive. Would recommend.
MrBe Posted
Okay, there is not much to review. Just pop them into your Gen 4 slot (Gen 3 will work but be slower) and away you go. It is super easy and if you have to force it, it may not be the right type. These things are rockets even compared to your SATA connected SSDs. It made more of a difference in speed on my system than did 64GB of RAM, or a top of the line Intel I9. This is the best upgrade you can put in your system as hard drives are a choke point for data. I recommend a small drive for your OS drive. 500GB will suffice in most cases even if you have a lot of apps but I went with a 1TB because that was the smallest I could get. I then put in two 4TB drives for DATA storage. The reason you want to keep the OS drive small is so you can make backups on the DATA drive. You can partition the large one down for the OS drive but be careful restoring the OS. If your system supports Gen 4 or Gen 3 these are a great option for speed!
DarvinA Posted