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Western Digital Blue SN5100 4TB vs Crucial P310 4TB — value comparison

Western Digital Blue SN5100 4TB shows higher Relative Value under balanced weights at the current dataset offers: 66 vs 56. The result crosses over if Crucial P310 4TB reaches about $474 or below.
Price data · US · USD · New · A 2026-09-11 · B 2026-09-11Coverage · 2 tracked new-offer records across both modelsBenchmark confidence · no estimate flags on these two recordsAffiliate links · We may earn a commission from these links. Scores are calculated separately using our methodology.
02 · Decision matrix

One decision, three separate questions

Capability ignores price. Relative Value adds the current dataset offers and your priorities. Keeping them separate prevents a cheap product from being mistaken for the faster product.

Same scenario engine as the tier lists · offer frame 2026-09-11
The decision, split by questioncapability · value · price are separate answers
CapabilityEven across scenarios
Better value todayWestern Digital Blue SN5100 4TB — 10 more Value points under this configuration
Cheaper right nowWestern Digital Blue SN5100 4TB (by $65)

Capability by task

Capability by task: Western Digital Blue SN5100 4TB versus Crucial P310 4TB
ScenarioWestern Digital Blue SN5100 4TBCrucial P310 4TB
System DriveS#133S#108
Game & File StorageS#55S#21
Heavy Creative WorkS#78S#108

They grade identically in all 3 graded scenarios — the tier table won't decide this one, so compare price and Value below. These are the same S–F grades as the tier list — capability only, price excluded. The value rows below add prices from the 2026-09-11 offer frame. How tiers are assigned →

Relative Value by priority

Balancedhigher relative value lit
66 ✓
56
System Drivehigher relative value lit
25 ✓
21
Game & File Storagehigher relative value lit
88 ✓
80
Heavy Creative Workhigher relative value lit
21 ✓
14
Strict Budgethigher relative value lit
47 ✓
41

Both products are normalized within the same in-stock market frame per preset. A check marks the higher Relative Value; a difference of 3 points or less is shown as practically even.

03 · Price crossover

The price changes the answer

Current offers, crossover points and Strong Value thresholds answer different questions. Thresholds are calculations, not price forecasts.

Balanced preset · rival offer held fixed

A · Western Digital Blue SN5100 4TB

Current dataset offer · NewUS · USD · snapshot 2026-09-11
$530
Beats Crucial P310 4TB atbalanced weights; rival offer held fixed
$665
Strong Value at80+ Relative Value threshold
$399

B · Crucial P310 4TB

Current dataset offer · NewUS · USD · snapshot 2026-09-11
$595
Beats Western Digital Blue SN5100 4TB atbalanced weights; rival offer held fixed
$474
Strong Value at80+ Relative Value threshold
$357
04 · Where to buy

Current offers for both products

Dated New-condition price snapshots for only the two products in this comparison. Confirm the final price and availability at the store.

US · USD · New · up to 4 per product
05 · Capability

Capability indexes, side by side

Price is intentionally excluded here so the more capable product and the better-value product cannot be confused.

A = violet · B = blue · labels and numbers preserve meaning without color
Drive capability 6900
7100
Sequential read (MB/s) 6900
7100
Sequential write (MB/s) 6700
6000
A · Western Digital Blue SN5100 4TBB · Crucial P310 4TBEach row keeps the unit or category index named in its label; bar length compares A and B within that row.Western Digital Blue SN5100 4TB shows higher Value under every weighting we test — a stable result in the 2026-09-11 offer frame.
06 · Platform & ownership

Fit, compatibility and ownership context

Only verified structured compatibility and ownership fields are shown. Check the exact system, board manual and vendor QVL before purchase; missing fields are never guessed.

A · Western Digital Blue SN5100 4TB

  • InterfaceM.2 PCIe 4.0 x4
  • Form factorM.2-2280
  • Capacity4,000 GB
  • DRAM cacheDRAM-less
  • Heatsink includedNo
  • Write endurance1,200 TBW
  • Warranty (typical new)60 mo

B · Crucial P310 4TB

  • InterfaceM.2 PCIe 4.0 x4
  • Form factorM.2-2280
  • Capacity4,000 GB
  • DRAM cacheDRAM-less
  • Heatsink includedNo
  • Write endurance800 TBW
  • Warranty (typical new)60 mo
07 · Specifications

Key specifications

Directional checkmarks appear only on numeric fields where more or less has a clear meaning. They are not an overall verdict.

Up to 12 key rows · additional verified fields below
Key specifications: Western Digital Blue SN5100 4TB versus Crucial P310 4TB
SpecificationWestern Digital Blue SN5100 4TBCrucial P310 4TB
InterfaceM.2 PCIe 4.0 x4M.2 PCIe 4.0 x4
Form factorM.2-2280M.2-2280
Capacity4,000 GB4,000 GB
Sequential read6,900 MB/s7,100 MB/s✓
Sequential write6,700 MB/s✓6,000 MB/s
Random read900,000 IOPSnot tracked
Random write1,100,000 IOPSnot tracked
Write endurance1,200 TBW✓800 TBW
DRAM cacheDRAM-lessDRAM-less
NAND typeQLC 3D CBA NANDMicron 176-layer QLC
ControllerSanDisk CustomPhison PS5021-E21T
Heatsink includedNoNo
Show additional verified specifications
Additional verified specifications: Western Digital Blue SN5100 4TB versus Crucial P310 4TB
SpecificationWestern Digital Blue SN5100 4TBCrucial P310 4TB
Current dataset offer · New$530snapshot 2026-09-11✓$595snapshot 2026-09-11
Warranty (typical new)60 mo60 mo

“Not tracked” means the source data does not contain a verified value; no default or guessed specification is substituted.

08 · Customize

Try other models and your own priorities

Presets are starting points. Swap either side, then open Advanced weights only if you want to tune the formula directly.

Runs locally in your browser · nothing is sent anywhere
09 · Alternative

A third option worth checking

The same scenario and market frame checks whether another currently priced model offers a cleaner trade-off.

Worth considering instead
Crucial T710 1TB — same S-tier capability for System Drive, about $320 cheaper · Value 100.
Neither of the two above is the only answer — this one clears the same bar for less. ⇄ Compare all three
10 · Decision guide

Choose based on the trade-off you actually want

These are evidence-linked conditions, not universal buying verdicts. Feature ecosystems, software support and platform preferences remain your call.

Choose A · Western Digital Blue SN5100 4TB if…

  • Your priorities resemble Balanced, System Drive, Game & File Storage — it has higher Relative Value under those presets at the snapshot offers.
  • You can find it at or below its Strong Value threshold of $399 under balanced weights.
Full Western Digital Blue SN5100 4TB analysis →
Compare — add more models →Open in the calculator →
11 · Methodology & FAQ

How to read this comparison

The formula is a linear weighted sum inside the current comparison frame. Capability, price and user priorities stay visible as separate inputs so the result can be challenged and changed.

Read the methodology →
Which is better value right now: Western Digital Blue SN5100 4TB or Crucial P310 4TB?
Under the balanced preset and the 2026-09-11 offer frame, Western Digital Blue SN5100 4TB has higher Relative Value under this configuration (66 vs 56). Value is price-dependent and moves with your weighting; capability is a separate question, answered by the tier table.
Which one is more capable, ignoring price?
They grade identically in all 3 graded scenarios — the tier table won't decide this one, so compare price and Value below.
At what price does the Crucial P310 4TB become the better value?
Holding the Western Digital Blue SN5100 4TB offer dated in the 2026-09-11 frame fixed, the calculation flips in favour of the Crucial P310 4TB at roughly $474 or below (balanced preset). Not a price forecast.
Where can I compare current offers for both?
Dated offer snapshots for both models are listed on their product pages (linked above); the interactive calculator recalculates both with your own weights and budget.
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Offer frame: 2026-09-11 · dataset generated 2026-09-11 · formula ssd-value-v1.5-benefit-cost-product · Value Score is an estimate based on our current dataset, selected weights, market prices and methodology — not an official product rating or a price forecast. Target prices are calculation thresholds, not predictions. Methodology · Report a data error