Retailer photo of Western Digital Black SN850X 8TB. View this offer in Where to buy
Western Digital · SSD · PCIe 4.0
Western Digital Black SN850X 8TB
Works well for: System Drive, Game & File Storage, Heavy Creative Work
Trade-offs: you want strong value with Balanced priorities specifically
- Capacity
- 8 TB
- Interface
- M.2 PCIe 4.0 x4
- Sequential read
- 7300 MB/s
- Sequential write
- 6600 MB/s
- Endurance
- 2400 TBW
- Form factor
- M.2-2280
Move a slider and the page re-scores this product against the same market frame.
Is this a good buy today?
Market confidence: MediumAt $1585 the Western Digital Black SN850X 8TB is priced in line with its $1600 representative market level. Samsung 870 QVO 8TB currently does the same job for $1425.
Consider: Crucial T705 2TB offers stronger value around $350.Compare
Prices & availability
Where to buy the Western Digital Black SN850X 8TB
Compare the offers we track for this model, across variants and retailers.
3 tracked offers · 2 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| Western Digital Black SN850X 8TB | Newegg | New | $1,585 | 51 | 2026-09-27 | View offer → |
| Western Digital Black SN850X 8TB | CentralComputer | New | $1,600 | 51 | 2026-09-27 | View offer → |
| Western Digital WD_Black SN850X 8TB (Heatsink) | Newegg | New | $1,614 | 51 | 2026-09-27 | View offer → |
| Western Digital Black SN850X 8TBMultiple variants available | Amazon Affiliate | Varies | Find on Amazon | Not tracked | No price snapshot | Find on Amazon → |
Prices are dated snapshots, not live quotes — confirm the final price at the store. New, refurbished and used offers are listed separately; used offers carry warranty and seller risk.
Where it stands in the field
Two different questions, side by side. Performance compares what the hardware can do; Value compares what that capability costs at today’s price. A product can rank high on one and low on the other — that gap is the point.
Performance Balanced
How much it can do. Price plays no part in this ranking.
#76 of 385 graded solid state drives
- #73 ADATAADATA LEGEND 960 MAX 1TB 50
- #74 SeagateSeagate FireCuda 530R 1TB 50
- #75 SeagateSeagate FireCuda 530R 1TB 50
- #76 Western DigitalWestern Digital Black SN850X 8TB 49
- #77 Western DigitalWestern Digital Black SN850X 8TB 49
- #78 Western DigitalWestern Digital WD_Black SN850X 4TB 49
- #79 Western DigitalWestern Digital Black SN850X 4TB 49
Value Balanced
How much of that you get for today’s price.
#131 of 385 currently priced solid state drives
- #128 SeagateSeagate FireCuda 530R 2TB 52
- #129 Western DigitalWestern Digital Blue SN5100 500GB 52
- #130 ADATAADATA LEGEND 960 MAX 1TB 52
- #131 Western DigitalWestern Digital Black SN850X 8TB 51
- #132 CorsairCorsair MP600 MICRO 2TB 51
- #133 TeamGroupTeamGroup FORCE G50 512GB 51
- #134 KingstonKingston Fury Renegade Heat Sink 4TB 51
Performance System Drive
How much it can do. Price plays no part in this ranking.
#76 of 385 graded solid state drives
- #73 ADATAADATA LEGEND 960 MAX 1TB 50
- #74 SeagateSeagate FireCuda 530R 1TB 50
- #75 SeagateSeagate FireCuda 530R 1TB 50
- #76 Western DigitalWestern Digital Black SN850X 8TB 49
- #77 Western DigitalWestern Digital Black SN850X 8TB 49
- #78 Western DigitalWestern Digital WD_Black SN850X 4TB 49
- #79 Western DigitalWestern Digital Black SN850X 4TB 49
Value System Drive
How much of that you get for today’s price.
#142 of 331 currently priced solid state drives
- #139 Kingston TechnologyKingston Technology NV3 2280 1TB 19
- #140 TeamGroupTeamGroup MP44L 1TB 19
- #141 PNYPNY XLR8 CS3040 1TB 19
- #142 Western DigitalWestern Digital Black SN850X 8TB 19
- #143 Western DigitalWestern Digital Black SN850X 8TB 19
- #144 CrucialCrucial T500 4TB 19
- #145 KingstonKingston NV3 1TB 19
Performance Game
How much it can do. Price plays no part in this ranking.
#5 of 385 graded solid state drives
- #2 Western DigitalWestern Digital SN8100 8TB 100
- #3 SamsungSamsung 9100 PRO 8TB 100
- #4 SamsungSamsung 9100 PRO 8TB 100
- #5 Western DigitalWestern Digital Black SN850X 8TB 100
- #6 Western DigitalWestern Digital Black SN850X 8TB 100
- #7 SamsungSamsung 870 QVO 8TB 100
- #8 Western DigitalWestern Digital SN8100 4TB 50
Value Game
How much of that you get for today’s price.
#19 of 385 currently priced solid state drives
- #16 Western DigitalWestern Digital WD_Black SN850X 4TB 84
- #17 TeamGroupTeamGroup FORCE G70 PRO Aluminum 4TB 83
- #18 CorsairCorsair MP600 CORE 4TB 82
- #19 Western DigitalWestern Digital Black SN850X 8TB 81
- #20 Western DigitalWestern Digital Blue SN5100 2TB 81
- #21 Western DigitalWestern Digital Black SN850X 8TB 80
- #22 Western DigitalWestern Digital SN8100 4TB 80
Performance Heavy Creative Work
How much it can do. Price plays no part in this ranking.
#82 of 385 graded solid state drives
- #79 Western DigitalWestern Digital Blue SN5100 4TB 48
- #80 Western DigitalWestern Digital Blue SN5100 2TB 48
- #81 Western DigitalWestern Digital Blue SN5100 1TB 48
- #82 Western DigitalWestern Digital Black SN850X 8TB 47
- #83 Western DigitalWestern Digital Black SN850X 8TB 47
- #84 Western DigitalWestern Digital WD_Black SN850X 4TB 47
- #85 Western DigitalWestern Digital Black SN850X 4TB 47
Value Heavy Creative Work
How much of that you get for today’s price.
#109 of 290 currently priced solid state drives
- #106 KingstonKingston KC3000 512GB 19
- #107 TeamGroupTeamGroup FORCE G50 4TB 18
- #108 Western DigitalWestern Digital Black SN850X 1TB 18
- #109 Western DigitalWestern Digital Black SN850X 8TB 18
- #110 CrucialCrucial T500 2TB 18
- #111 Western DigitalWestern Digital Black SN850X 8TB 18
- #112 Western DigitalWestern Digital Blue SN5000 2TB 17
These ladders follow the preset scenario shown above. Your own weights re-score this product, not the whole field.
What it is good for
| Scenario | this productCapability grade · Value at current price | Higher capability | Higher Value with current priorities |
|---|---|---|---|
| Balanced (all-round)Weighted all-round view | GradeNo grade Value51 | Higher capability Crucial T710 1TB 91 +104% capability · -86% price | Higher Value with current priorities Crucial T705 2TB 100 +99% capability · -78% price |
| System DriveScenario capability | GradeS Value19 | Higher capability Higher capability · Higher Value with current priorities Crucial T710 1TB S 100 +104% capability · -86% price | |
| Game & File StorageScenario capability | GradeS Value81 | — | — |
| Heavy Creative WorkScenario capability | GradeS Value18 | Higher capability Western Digital SN8100 2TB S 85 +112% capability · -74% price | Higher Value with current priorities Kingston FURY Renegade G5 4TB S 100 +112% capability · -28% price |
Balanced has no letter: it is a weighting preset, not a capability rubric. A grade answers “how well does this handle that job?” — price is never part of it. Relative Value puts the current market price back in.
Trade-offs
Works well if
- Game & File Storage is your main prioritygraded S for Game & File Storage on the same rubric as the tier list
Consider other options if
- You want strong value with Balanced priorities specificallyat today's market no realistic price for this model reaches strong value with Balanced priorities — the calculation only gets there near $844, against a cheapest tracked $1585
- Value for money matters more to you than this exact modelCrucial T705 2TB holds Relative Value 100 against its 51 with Balanced priorities, at $350
Works well if
- System Drive is your main prioritygraded S for System Drive on the same rubric as the tier list
Consider other options if
- You want strong value for System Drive specificallycompeting products deliver so much more for System Drive per dollar that no price this model realistically trades at reaches the strong-value mark for this job
- Value for money matters more to you than this exact modelCrucial T710 1TB holds Relative Value 100 against its 19 for System Drive, at $220
- You are buying for System Drive and want no asterisksthe rubric caps this grade: read speed taken from another capacity of the same drive family — not measured for this exact model
Works well if
- Game is your main prioritygraded S for Game on the same rubric as the tier list
- Today's price already clears the strong-value markcheapest tracked $1585 against a $1629 threshold for Game
Consider other options if
- Value for money matters more to you than this exact modelSamsung 870 QVO 8TB holds Relative Value 59 against its 81 for Game, at $1425
Works well if
- Heavy Creative Work is your main prioritygraded S for Heavy Creative Work on the same rubric as the tier list
Consider other options if
- You want strong value for Heavy Creative Work specificallycompeting products deliver so much more for Heavy Creative Work per dollar that no price this model realistically trades at reaches the strong-value mark for this job
- Value for money matters more to you than this exact modelKingston FURY Renegade G5 4TB holds Relative Value 100 against its 18 for Heavy Creative Work, at $1146
- You are buying for Heavy Creative Work and want no asterisksthe rubric caps this grade: write speed inferred, not measured for this exact model
Every line states the fact it was derived from, for the scenario selected above. Thresholds are calculated points on our value curve — information about where the maths turns, not instructions about what to pay.
Similar options to the Western Digital Black SN850X 8TB
Chosen for Balanced
Chosen for System Drive
Chosen for Game
Chosen for Heavy Creative Work
Alternatives stay near this product’s price range. Step-up options may exceed the standard budget envelope when the capability gain is meaningful.
Upgrade planner
Judge the change in the active scenario, then make the cash gap explicit.
Using page scenarioWhat are you upgrading from? These are the axes we compare on, and where this product stands in the current market.
Capability differences are expressed as tiers and index points, not as benchmark percentages we did not measure.
Specifications & compatibility
What this product is, and what to check before it goes into your build.
Performance
- Sequential read
- 7300 MB/s
- Sequential write
- 6600 MB/s
- Random read
- 0 IOPS
- Random write
- 0 IOPS
- Controller
- WD Proprietary
Media
- Capacity
- 8 TB
- NAND type
- SanDisk 112-layer TLC
- DRAM cache
- 8GB DDR4
Power / Interface
- Interface
- M.2 PCIe 4.0 x4
- Form factor
- M.2-2280
Physical / Outputs
- Heatsink included
- No
Show all specifications
Endurance & warranty
- Endurance
- 2400 TBW
- Warranty
- 5 years
- Manufacturer part number
- WDS800T2X0E00CDD0
Hover any value to see where it came from: a manufacturer specification, or a figure The Comparator calculated.
Sources: Comparator offer frame 2026-09-27
What to check in your build
M.2-2280
The slot must take M.2-2280
M.2 PCIe 4.0 x4
PCIe 4.0 M.2 slot for full speed
PCIe 4.0 — runs in older slots at their speed
Fits under an M.2 shroud
Bare drive — it fits under a motherboard M.2 shroud
Meets the PS5 expansion requirements
M.2 2280 NVMe, PCIe 4.0, 7300 MB/s read — meets Sony's published requirements; a heatsink is required
Found an error? Report this specification Email the field, corrected value and an optional source.
Compatibility guidance is practical help, not a score. Missing data is shown as unknown, never invented.
Summary
Western Digital Black SN850X 8TB offers a balanced view across an all-round mix of priorities. It ranks #76 by capability in the current modelled field. Its clearest measured strength is drive capability 7300. Crucial T705 2TB currently clears the same practical bar with stronger Relative Value.
Western Digital Black SN850X 8TB offers S-grade capability for System Drive. It ranks #76 by capability in the current modelled field. Its clearest measured strength is drive capability 7300. Crucial T705 2TB currently clears the same practical bar with stronger Relative Value.
Western Digital Black SN850X 8TB offers S-grade capability for Game. It ranks #5 by capability in the current modelled field. Its clearest measured strength is drive capability 7300. Samsung 870 QVO 8TB currently clears the same practical bar with stronger Relative Value.
Western Digital Black SN850X 8TB offers S-grade capability for Heavy Creative Work. It ranks #82 by capability in the current modelled field. Its clearest measured strength is drive capability 7300. Crucial T705 2TB currently clears the same practical bar with stronger Relative Value.
FAQ
Why does Relative Value change when I choose another scenario?
Each scenario changes the weights applied to capability, price and the other published factors. The hardware facts stay fixed, but the value question changes, so its score and rank can change too.
Why can Amazon appear without a tracked price?
Amazon is shown as a discovery link when we do not have a permitted verified price snapshot. It is excluded from price comparisons, rankings and Relative Value until a compliant tracked price exists.
Useful links & sources
offer frame 2026-09-27 · formula ssd-value-v1.5 · facts facts-2026-09-27 · Relative Value is an estimate from our current dataset, the selected weights and dated market prices — not an official product rating and not a price forecast. Target prices are calculation thresholds, not predictions. Methodology We are not a shop. Affiliate links may earn us a commission; they never change the calculations or the ranking.