Western Digital SN8100 4TB
The current Western Digital SN8100 4TB price from retailers, its key specifications, and how it performs for each job.
Western Digital · SSD · PCIe 5.0
Retailer photo of Western Digital SN8100 4TB. View this offer in Where to buy
Works well for: System Drive, Game & File Storage, Heavy Creative Work
Trade-offs: Current price sits $247 above the strong-value threshold (~$499)
- Capacity
- 4 TB
- Interface
- M.2 PCIe 5.0 x4
- Sequential read
- 14900 MB/s
- Sequential write
- 11000 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.
What does it cost today, and is that a good price?
Market confidence: MediumAt $746 the Western Digital SN8100 4TB is priced 17% below its $900 representative market level. Crucial T710 1TB currently does the same job for $230.
Worth putting side by side:Compare with Crucial T710 1TB
Prices & availability
Western Digital SN8100 4TB: current price and offers
Compare the offers we track for this model, across variants and retailers.
3 tracked offers · 3 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| Western Digital SN8100 4TB | Newegg | New | $746 | 53 | 2026-11-09 | View offer → |
| Western Digital SN8100 4TB (Heatsink) | B&H | New | $900 | 47 | 2026-11-09 | View offer → |
| Western Digital SN8100 4TB | CentralComputer | New | $900 | 44 | 2026-11-09 | View offer → |
| Western Digital SN8100 4TBMultiple 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.
Performance and where it ranks
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.
#1 of 239 graded solid state drives
- #1 Western DigitalWestern Digital SN8100 4TB 100
- #2 Western DigitalWestern Digital SN8100 2TB 100
- #3 CrucialCrucial T710 1TB 100
- #4 Western DigitalWestern Digital SN8100 1TB 100
- #5 SamsungSamsung 9100 PRO 8TB 99
- #6 SamsungSamsung 9100 PRO 4TB 99
- #7 KingstonKingston FURY Renegade G5 4TB 99
Value Balanced
How much of that you get for today’s price.
#83 of 239 currently priced solid state drives
- #80 CrucialCrucial T700 4TB 54
- #81 Western DigitalWestern Digital Blue SN580 500GB 54
- #82 SamsungSamsung 990 Pro 2TB 54
- #83 Western DigitalWestern Digital SN8100 4TB 53
- #84 CorsairCorsair MP700 PRO 2TB 53
- #85 TeamGroupTeamGroup MP44 1TB 53
- #86 PNYPNY CS1030 1TB 53
Performance System Drive
How much it can do. Price plays no part in this ranking.
#1 of 239 graded solid state drives
- #1 Western DigitalWestern Digital SN8100 4TB 100
- #2 Western DigitalWestern Digital SN8100 2TB 100
- #3 CrucialCrucial T710 1TB 100
- #4 Western DigitalWestern Digital SN8100 1TB 100
- #5 SamsungSamsung 9100 PRO 8TB 99
- #6 SamsungSamsung 9100 PRO 4TB 99
- #7 KingstonKingston FURY Renegade G5 4TB 99
Value System Drive
How much of that you get for today’s price.
#85 of 239 currently priced solid state drives
- #82 SamsungSamsung 990 Pro 2TB 34
- #83 MSIMSI SPATIUM M470 PRO 2TB 34
- #84 KingstonKingston NV3 1TB 33
- #85 Western DigitalWestern Digital SN8100 4TB 33
- #86 CrucialCrucial T700 4TB 33
- #87 TeamGroupTeamGroup NV5000 2TB 32
- #88 Western DigitalWestern Digital Red SN700 500GB 32
Performance Game
How much it can do. Price plays no part in this ranking.
#5 of 239 graded solid state drives
- #2 LexarLexar NM790 8TB 100
- #3 Western DigitalWestern Digital Black SN850X 8TB 100
- #4 SamsungSamsung 870 QVO 8TB 100
- #5 Western DigitalWestern Digital SN8100 4TB 50
- #6 SamsungSamsung 9100 PRO 4TB 50
- #7 KingstonKingston FURY Renegade G5 4TB 50
- #8 CrucialCrucial T710 4TB 50
Value Game
How much of that you get for today’s price.
#98 of 239 currently priced solid state drives
- #95 CrucialCrucial T710 1TB 65
- #96 CrucialCrucial P3 Plus 2TB 65
- #97 PatriotPatriot P220 1TB 65
- #98 Western DigitalWestern Digital SN8100 4TB 65
- #99 LexarLexar Professional NM1090 PRO 1TB 64
- #100 TeamGroupTeamGroup CX2 512GB 64
- #101 Western DigitalWestern Digital SN770M 1TB 64
Performance Heavy Creative Work
How much it can do. Price plays no part in this ranking.
#15 of 239 graded solid state drives
- #12 CrucialCrucial T705 2TB 91
- #13 KingstonKingston FURY Renegade G5 1TB 86
- #14 CrucialCrucial T700 4TB 84
- #15 Western DigitalWestern Digital SN8100 4TB 79
- #16 Western DigitalWestern Digital SN8100 1TB 79
- #17 CrucialCrucial T705 4TB 73
- #18 LexarLexar Professional NM1090 PRO 1TB 71
Value Heavy Creative Work
How much of that you get for today’s price.
#18 of 239 currently priced solid state drives
- #15 CrucialCrucial T705 4TB 81
- #16 Western DigitalWestern Digital SN7100 500GB 80
- #17 CorsairCorsair MP700 PRO 1TB 79
- #18 Western DigitalWestern Digital SN8100 4TB 78
- #19 CrucialCrucial T700 4TB 76
- #20 CrucialCrucial P510 2TB 76
- #21 KingstonKingston FURY Renegade G5 4TB 75
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 Value53 | — | Higher Value with current priorities Crucial T710 1TB 88 +0% capability · -69% price |
| System DriveScenario capability | GradeS Value33 | — | Higher Value with current priorities Crucial T710 1TB S 93 +0% capability · -69% price |
| Game & File StorageScenario capability | GradeS Value65 | — | Higher Value with current priorities Western Digital WD Blue SN5000 4TB S 86 +0% capability · -34% price |
| Heavy Creative WorkScenario capability | GradeS Value78 | Higher capability Western Digital SN8100 2TB S 88 +27% capability · -40% price | Higher Value with current priorities Crucial T710 1TB S 100 +25% capability · -69% 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.
Compare these grades with the full tier list
Browse shortlists for different uses
Trade-offs
Works well if
- System Drive is your main prioritygraded S for System Drive on the same rubric as the tier list
- Strong-value threshold: ~$499$499 is where Relative Value reaches 80 with Balanced priorities, in the 2026-11-02–2026-11-09 offer frame
Consider other options if
- Current price sits $247 above the strong-value threshold (~$499)cheapest tracked $746 against a $499 calculated threshold with Balanced priorities
- Value for money matters more to you than this exact modelCrucial T710 1TB holds Relative Value 88 against its 53 with Balanced priorities, at $230
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 specificallyat today's market no realistic price for this model reaches strong value for System Drive — the calculation only gets there near $310, against a cheapest tracked $746
- Value for money matters more to you than this exact modelCrucial T710 1TB holds Relative Value 93 against its 33 for System Drive, at $230
- 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
- Strong-value threshold: ~$603$603 is where Relative Value reaches 80 for Game, in the 2026-11-02–2026-11-09 offer frame
Consider other options if
- Current price sits $143 above the strong-value threshold (~$603)cheapest tracked $746 against a $603 calculated threshold for Game
- Value for money matters more to you than this exact modelWestern Digital WD Blue SN5000 4TB holds Relative Value 86 against its 65 for Game, at $491
Works well if
- Heavy Creative Work is your main prioritygraded S for Heavy Creative Work on the same rubric as the tier list
- Strong-value threshold: ~$708$708 is where Relative Value reaches 80 for Heavy Creative Work, in the 2026-11-02–2026-11-09 offer frame
Consider other options if
- Current price sits $38 above the strong-value threshold (~$708)cheapest tracked $746 against a $708 calculated threshold for Heavy Creative Work
- Value for money matters more to you than this exact modelCrucial T710 1TB holds Relative Value 100 against its 78 for Heavy Creative Work, at $230
- 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 SN8100 4TB
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.
More head-to-head comparisons in this category
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 and compatibility
What this product is, and what to check before it goes into your build.
Performance
- Sequential read
- 14900 MB/s
- Sequential write
- 11000 MB/s
- Random read
- 0 IOPS
- Random write
- 0 IOPS
- Controller
- Silicon Motion SM2508
Media
- Capacity
- 4 TB
- NAND type
- Kioxia TLC
- DRAM cache
- 4GB
Power / Interface
- Interface
- M.2 PCIe 5.0 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
- WDS400T1X0M-00CMT0
Hover any value to see where it came from: a manufacturer specification, or a figure The Comparator calculated.
Sources: Comparator offer frame 2026-11-02–2026-11-09
What to check in your build
M.2-2280
The slot must take M.2-2280
M.2 PCIe 5.0 x4
PCIe 5.0 M.2 slot for full speed
PCIe 5.0 — 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 5.0, 14900 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 SN8100 4TB offers a balanced view across an all-round mix of priorities. It ranks #1 by capability in the current modelled field. Its clearest measured strength is drive capability 14900. Crucial T710 1TB currently clears the same practical bar with stronger Relative Value.
Western Digital SN8100 4TB offers S-grade capability for System Drive. It ranks #1 by capability in the current modelled field. Its clearest measured strength is drive capability 14900. Crucial T710 1TB currently clears the same practical bar with stronger Relative Value.
Western Digital SN8100 4TB offers S-grade capability for Game. It ranks #5 by capability in the current modelled field. Its clearest measured strength is drive capability 14900. Crucial T705 4TB currently clears the same practical bar with stronger Relative Value.
Western Digital SN8100 4TB offers S-grade capability for Heavy Creative Work. It ranks #15 by capability in the current modelled field. Its clearest measured strength is drive capability 14900. Crucial T710 1TB 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 listing snapshots can participate in Value while fresh. We show Check on Amazon instead of its price; confirm the current price and availability at the store. When no current listing snapshot exists, Amazon is a search link only.
Useful links & sources
offer frame 2026-11-02–2026-11-09 · formula ssd-value-v6.1 · facts facts-2026-11-09 · 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.