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
- 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: LowAt CAD 1120 the Western Digital SN8100 4TB is priced in line with its CAD 1120 representative market level. Only one retailer currently backs that price, so the level is a single data point rather than a market.
Limited market: only one retailer currently has a verified offer, so treat this price as a single data point.
Prices & availability
Western Digital SN8100 4TB: current price and offers
Compare the offers we track for this model, across variants and retailers.
1 tracked offers · 1 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| Western Digital SN8100 4TB | Newegg | New | CAD 1,120 | 97 | 2026-10-29 | 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 182 graded solid state drives
- #1 Western DigitalWestern Digital SN8100 4TB 100
- #2 SamsungSamsung 9100 PRO 8TB 99
- #3 SamsungSamsung 9100 PRO 4TB 99
- #4 SamsungSamsung 9100 PRO 2TB 99
- #5 CrucialCrucial T710 2TB 97
- #6 CorsairCorsair MP700 PRO SE Air Cooler 2TB 94
- #7 CrucialCrucial T705 2TB 91
Value Balanced
How much of that you get for today’s price.
#4 of 182 currently priced solid state drives
- #1 SamsungSamsung 9100 PRO 4TB 100
- #2 TeamGroupTeamGroup MP44Q 4TB 98
- #3 SamsungSamsung 9100 PRO 8TB 98
- #4 Western DigitalWestern Digital SN8100 4TB 97
- #5 CrucialCrucial T710 2TB 97
- #6 TeamGroupTeamGroup MP44 4TB 93
- #7 CorsairCorsair MP700 PRO SE Air Cooler 2TB 92
Performance System Drive
How much it can do. Price plays no part in this ranking.
#1 of 182 graded solid state drives
- #1 Western DigitalWestern Digital SN8100 4TB 100
- #2 SamsungSamsung 9100 PRO 8TB 99
- #3 SamsungSamsung 9100 PRO 4TB 99
- #4 SamsungSamsung 9100 PRO 2TB 99
- #5 CrucialCrucial T710 2TB 97
- #6 CorsairCorsair MP700 PRO SE Air Cooler 2TB 94
- #7 CrucialCrucial T705 2TB 91
Value System Drive
How much of that you get for today’s price.
#5 of 182 currently priced solid state drives
- #2 SamsungSamsung 9100 PRO 4TB 92
- #3 SamsungSamsung 9100 PRO 2TB 92
- #4 CorsairCorsair MP700 PRO SE Air Cooler 2TB 89
- #5 Western DigitalWestern Digital SN8100 4TB 83
- #6 SamsungSamsung 9100 PRO 8TB 81
- #7 CrucialCrucial T705 2TB 81
- #8 CrucialCrucial P510 1TB 74
Performance Game
How much it can do. Price plays no part in this ranking.
#4 of 182 graded solid state drives
- #1 SamsungSamsung 9100 PRO 8TB 100
- #2 Western DigitalWestern Digital Black SN850X 8TB 100
- #3 SamsungSamsung 870 QVO 8TB 100
- #4 Western DigitalWestern Digital SN8100 4TB 50
- #5 SamsungSamsung 9100 PRO 4TB 50
- #6 SamsungSamsung 990 Pro 4TB 50
- #7 TeamGroupTeamGroup MP44Q 4TB 50
Value Game
How much of that you get for today’s price.
#10 of 182 currently priced solid state drives
- #7 TeamGroupTeamGroup QX 4TB 82
- #8 KingstonKingston NV3 4TB 81
- #9 Western DigitalWestern Digital WD_Black SN850X 4TB 80
- #10 Western DigitalWestern Digital SN8100 4TB 77
- #11 SamsungSamsung 9100 PRO 4TB 76
- #12 KingstonKingston KC3000 4TB 76
- #13 KingstonKingston NV3 2TB 75
Performance Heavy Creative Work
How much it can do. Price plays no part in this ranking.
#6 of 182 graded solid state drives
- #3 SamsungSamsung 9100 PRO 4TB 98
- #4 SamsungSamsung 9100 PRO 2TB 98
- #5 CorsairCorsair MP700 PRO SE Air Cooler 2TB 88
- #6 Western DigitalWestern Digital SN8100 4TB 80
- #7 CrucialCrucial T705 2TB 74
- #8 CorsairCorsair MP700 PRO 2TB 70
- #9 CrucialCrucial T700 1TB 69
Value Heavy Creative Work
How much of that you get for today’s price.
#4 of 182 currently priced solid state drives
- #1 SamsungSamsung 9100 PRO 8TB 100
- #2 SamsungSamsung 9100 PRO 4TB 92
- #3 CrucialCrucial T710 2TB 81
- #4 Western DigitalWestern Digital SN8100 4TB 80
- #5 SamsungSamsung 9100 PRO 2TB 72
- #6 CorsairCorsair MP700 PRO SE Air Cooler 2TB 70
- #7 CrucialCrucial T705 2TB 62
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 Value97 | — | Higher Value with current priorities Samsung 9100 PRO 4TB 100 -1% capability |
| System DriveScenario capability | GradeS Value83 | — | Higher Value with current priorities Crucial T710 2TB S 100 -3% capability · -44% price |
| Game & File StorageScenario capability | GradeS Value77 | — | Higher Value with current priorities TeamGroup MP44Q 4TB S 100 +0% capability |
| Heavy Creative WorkScenario capability | GradeS Value80 | Higher capability Crucial T710 2TB S 81 +25% capability · -44% price | Higher Value with current priorities Samsung 9100 PRO 4TB S 92 +22% capability |
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
- Today's price already clears the strong-value markcheapest tracked CAD 1120 against a CAD 1473 threshold with Balanced priorities
Works well if
- System Drive is your main prioritygraded S for System Drive on the same rubric as the tier list
- Today's price already clears the strong-value markcheapest tracked CAD 1120 against a CAD 1211 threshold for System Drive
Consider other options if
- Value for money matters more to you than this exact modelCrucial T710 2TB holds Relative Value 100 against its 83 for System Drive, at CAD 630
- 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: ~CAD 1046CAD 1046 is where Relative Value reaches 80 for Game, in the 2026-10-27–2026-10-29 offer frame
Consider other options if
- Current price sits CAD 74 above the strong-value threshold (~CAD 1046)cheapest tracked CAD 1120 against a CAD 1046 calculated threshold for Game
- Value for money matters more to you than this exact modelTeamGroup MP44Q 4TB holds Relative Value 100 against its 77 for Game. Check on Amazon.
Works well if
- Heavy Creative Work is your main prioritygraded S for Heavy Creative Work on the same rubric as the tier list
- Today's price already clears the strong-value markcheapest tracked CAD 1120 against a CAD 1130 threshold for Heavy Creative Work
Consider other options if
- 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 2026-10-27–2026-10-29
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 2TB 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 2TB currently clears the same practical bar with stronger Relative Value.
Western Digital SN8100 4TB offers S-grade capability for Game. It ranks #4 by capability in the current modelled field. Its clearest measured strength is drive capability 14900. TeamGroup MP44Q 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 #6 by capability in the current modelled field. Its clearest measured strength is drive capability 14900.
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 2026-10-27–2026-10-29 · formula ssd-value-v1.5 · facts facts-2026-10-29 · 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.