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Western Digital WD_BLACK SN850 1TB PCIe 4.0 x4 NVMe M.2 2280

★★★★★ 4.8 (13,442)
Capacity 1TB
Form Factor M.2 2280
Interface PCIe 4.0 x4
Read Speed 7,000 MB/s
NAND TLC
Endurance 600 TBW
Western Digital WD_BLACK SN850 1TB PCIe 4.0 x4 NVMe M.2 2280 ssd
78 Overall Score

No current retailer price

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Snapshot

The 30-Second Version

The WD_BLACK SN850 is a proven Gen4 gaming SSD with 7,000 MB/s reads and a solid 78/100 overall score. It's not the newest or fastest anymore, but it's reliable and the heatsink version is great for desktops. At $179 it's a no-brainer, at $340 it's a pass.

Pros & Cons

Pros

  • Blazing 7,000 MB/s reads make load times nearly vanish 95th
  • Heatsink keeps thermals in check without extra cost 92nd
  • Rock solid reliability with 600 TBW endurance 79th
  • WD_BLACK Dashboard software is actually useful for monitoring 79th

Cons

  • 1TB fills up fast with modern game installs
  • Not the fastest Gen4 drive anymore
  • Heatsink version won't fit in laptops or tight M.2 slots
  • Price swings wildly between retailers

The proof

Performance

The headline numbers are still impressive. 7,000 MB/s sequential reads and 5,300 MB/s writes put it in the 79th percentile for speed, which means it's well above average but no longer the absolute top of the charts. Random performance is where this drive shines for gaming, with 1,000K read IOPS and 720K write IOPS. That translates to snappy level loads and quick texture streaming. The heatsink does its job keeping thermal throttling at bay, so you won't see performance tank during long gaming sessions. The 1TB capacity is fine for a solid game library, though it sits at the 55th percentile for capacity, so you might be doing some uninstall shuffling if you play a lot of big titles.

Performance Percentiles

Speed 79.1
Random 91.6
Feature 78.7
Capacity 54.8
Endurance 71
Social Proof 95.2

Specifications

Full Specifications

Drive

Capacity 1000
Form Factor M.2 2280
Interface PCIe 4.0 x4
Protocol NVMe
PCIe Generation 4
External No

Performance

Sequential Read (MB/s) 7000
Sequential Write (MB/s) 5300
Random Read (IOPS) 1000000
Random Write (IOPS) 720000

Hardware

NAND TLC

Reliability

Endurance (TBW) 600
MTBF (hours) 1750000

Features

Heatsink Yes

vs Competition

Against the Samsung 990 PRO, the SN850 gives up some ground on raw speed and endurance. The 990 PRO is the current king of Gen4, but it also costs more. The Crucial T500 is a closer match on price and actually beats the SN850 on some random workloads. The Kingston Fury Renegade is basically the same drive in a different outfit, so pick whichever is cheaper. The Corsair MP700 Elite jumps to Gen5 speeds, but you'll pay a premium and need a compatible motherboard. For pure gaming, the SN850 still trades blows with all of them where it counts.

Spec Western Digital WD_BLACK SN850 Samsung 9100 PRO Kingston FURY Renegade G5 SFYR2S/4T0 Crucial T500 SanDisk WD_BLACK SN8100 Seagate FireCuda 530R
Capacity 1TB 8TB 4TB 2TB 8TB 4TB
Form Factor M.2 2280 M.2 2280 M.2 2280 M.2 2280 M.2 2280 M.2 2280
Interface PCIe 4.0 x4 PCIe 5.0 x4 PCIe 5.0 x4 PCIe 4.0 x4 PCIe 5.0 x4 PCIe 4.0 x4
Seq Read 7,000 MB/s 14,800 MB/s 14,800 MB/s 7,400 MB/s 14,900 MB/s 7,400 MB/s
Nand Type TLC TLC TLC TLC TLC TLC
Dram Cache - true true true true false
Endurance 600 TBW 4800 TBW 4000 TBW 1200 TBW 4800 TBW 5050 TBW
Compare Compare Compare Compare Compare
Product SpeedRandomFeatureCapacityEnduranceSocial Proof
Western Digital WD_BLACK SN850 79.191.678.754.87195.2
Samsung 9100 PRO Compare 99.199.899.798.185.895.2
Kingston FURY Renegade G5 SFYR2S/4T0 Compare 99.498.790.492.593.486.8
Crucial T500 Compare 93.896.598.978.382.895.2
SanDisk WD_BLACK SN8100 Compare 98.999.197.398.180.745.2
Seagate FireCuda 530R Compare 92.596.453.492.595.677.4

Price

Value & Pricing

Here's the weird part. The USD price bounces between $179 and $340 depending on where you look, which is a massive spread. At $179, this drive is an absolute steal and you should buy it without thinking twice. At $340, you're paying way too much for last-gen performance when newer drives like the Samsung 990 PRO or Crucial T500 are right there. Newegg has the best deal in our listings, so check there first. The CAD price of $477 is rough, but that's just the Canadian storage tax talking.

Read more

Overview

The WD_BLACK SN850 is a Gen4 drive that made a huge splash when it landed, and it still holds up as a serious gaming SSD. You get up to 7,000 MB/s reads and 5,300 MB/s writes on the 1TB model, which is right in the sweet spot for anyone who hates staring at loading screens. The heatsink version here is the one to grab if your motherboard doesn't have its own M.2 cooling, because this drive can get toasty under sustained load.

It's not the newest kid on the block anymore, but our database puts its social proof in the 95th percentile. Real buyers have been hammering this thing for years and it keeps ticking. The 600 TBW endurance rating is solid for a gaming drive, though you shouldn't confuse this with a NAS or server workhorse. Western Digital says that right on the box.

Common Questions

Q: Will the heatsink version fit in my PS5?

Yes, the SN850 with heatsink is a popular PS5 upgrade and fits the console's M.2 bay without issues. The heatsink helps keep temps down during long gaming sessions.

Q: Is this drive good for a laptop?

The heatsink version is too tall for most laptops, so you'd want the non-heatsink model instead. The drive itself runs fine in laptops, but make sure your laptop supports PCIe 4.0 to get the full speed.

Q: How does this compare to the newer SN850X?

The SN850X is a refreshed version with slightly better random performance and higher capacities. The original SN850 is still a great drive, but if the price is close, the SN850X is the better buy.

Who Should Skip This

Skip this if you need more than 1TB of storage, because modern games eat space like crazy and you'll be uninstalling things constantly. Also skip it if you're building a NAS or server, this drive isn't rated for that kind of workload and WD explicitly says so. And if you're paying anywhere near the $340 end of the price range, just get a Samsung 990 PRO or Crucial T500 instead.

Verdict

If you're building a gaming PC and want a proven, reliable Gen4 drive with a heatsink included, the SN850 is still a great pick. It's not the fastest thing on the shelf anymore, but it's fast enough that you won't notice the difference in real-world gaming. Grab it when it dips near the $180 mark and you'll be thrilled. Pay full price and you'll feel a little silly when the newer drives are sitting right there.

Usage Scores

Overall (78.2)Budget (77.6)Gaming (77.9)Laptop (69.2)Console (77.1)Portable (20.2)Workstation (77.7)

Other Configurations2

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