Kingston KC3000 4TB
Kingston
Current comparison price
$799Value · Balanced39
from 2 offers at 2 retailers · checked Nov 9
Capability highlights · price excluded
- S System Drive
- S Game & File Storage
- S Heavy Creative Work
Kingston KC3000 4TB vs Western Digital Black SN850X 4TB
Compare Kingston KC3000 4TB and Western Digital Black SN850X 4TB in the United States side by side across price, specifications, capability by use case and the price at which the answer changes.
Market snapshot Nov 9, 2026 · USD
Specifications, performance and current prices compared in United States · USD · prices checked through Nov 9, 2026
Western Digital WD_Black SN850X 4TB
Western Digital
Current comparison price
$656Value · Balanced45
from 4 offers at 3 retailers · checked Nov 9
Capability highlights · price excluded
- S System Drive
- S Game & File Storage
- S Heavy Creative Work
Key differences at a glance
Capabilityprice excluded
Same grade in all 3 scenarios. View grades →
Valueunder Balanced
Western Digital WD_Black SN850X 4TB has the higher Value under these priorities (45 vs 39).
Pricecurrent market snapshot
Western Digital WD_Black SN850X 4TB costs less right now ($656 vs $799, 18% apart).
How priorities change the comparison Presets with the higher Value: Kingston KC3000 4TB 0 · Western Digital WD_Black SN850X 4TB 3 · even 1
| Priority | Kingston KC3000 4TB | Western Digital WD_Black SN850X 4TB | |
|---|---|---|---|
| 39 | 45 | ||
| 19 | 22 | ||
| 56 | 67 | ||
| 53 | 54 | even |
Pick a preset to compare under it: the whole page follows. Within 2 points counts as even.
Price difference and break-even price
Under Balanced, each product holds or loses the higher Value at one price, with the other held at its current price. Enter the prices you were actually offered to see the answer for your deal.
Kingston KC3000 4TB
Current comparison price
$799 39
Kingston KC3000 4TB matches the Value of Western Digital WD_Black SN850X 4TB (at $656) at $687 or less.
Western Digital WD_Black SN850X 4TB
Current comparison price
$656 45
Western Digital WD_Black SN850X 4TB keeps the higher Value up to $763 (with Kingston KC3000 4TB at $799).
A crossover is a calculation under the active priorities and today's market frame, not a price forecast.
Price comparison: current offers
New offers we track in United States (USD), cheapest first, with the date each was checked. Amazon appears as a link only: its price is not shown and never enters Value.
Kingston KC3000 4TB
- Check on AmazonAmazonAffiliate link · price shown on AmazonCheck price →
- $799Best priceKingston KC3000 4TBNewegg · checked · Affiliate linkGo to offer →
- $846Kingston KC3000 4TBMemoryC · checked · Affiliate linkGo to offer →
Western Digital WD_Black SN850X 4TB
- $656Best priceWestern Digital WD_Black SN850X 4TBNewegg · checked · Affiliate linkGo to offer →
- $750Western Digital WD_Black SN850X 4TBCentralComputer · checked Go to offer →
- Check on AmazonWestern Digital WD_Black SN850X 4TB (Heatsink)Amazon · checked Go to offer →
- $765Western Digital WD_Black SN850X 4TB (Heatsink)Newegg · checked · Affiliate linkGo to offer →
Affiliate links may earn us a commission. They never change the prices shown here, the ranking or Value.
Performance and key differences
What each product can do for a job, graded S to F with price left out, and the measured indexes behind it.
View full tier list and performance rankings
| Kingston KC3000 4TB | Western Digital WD_Black SN850X 4TB | |
|---|---|---|
| System Drive | S #42 | S #41 |
| Game & File Storage | S #15 | S #14 |
| Heavy Creative Work | S #26 | S #46 |
| Drive performance | 7,300 | 7,300 |
| Sequential read | 7,300 | 7,300 |
| Sequential write | 7,000 | 6,600 |
Where each one leads
- Lower current price · Higher Value with these priorities · More offers
Specifications compared
Facts true of every board a product groups; a range or "varies" marks a fact that differs between boards.
7 identical facts hidden
| Kingston KC3000 4TB | Western Digital WD_Black SN850X 4TB | |
|---|---|---|
| Speed | ||
| Sequential write | 7,000 MB/s | 6,600 MB/s |
| Storage and endurance | ||
| Endurance | 3,200 TBW | 2,400 TBW |
| NAND type | TLC | SanDisk 112-layer TLC |
| Controller | Phison E18 | WD Proprietary |
| Interface and fit | ||
| Heatsink included | No | varies by board |
| Product | ||
| Brand | Kingston | Western Digital |
Not tracked means the source data does not have this fact. It is not assumed to be absent.
Which one to choose: where each wins
Conditions drawn from the data above, not a universal recommendation. The better choice depends on which of these matter to you.
Kingston KC3000 4TB fits better when…
- Sequential write matters: higher index
- Sequential write matters: 7,000 MB/s vs 6,600 MB/s
- Endurance matters: 3,200 TBW vs 2,400 TBW
Western Digital WD_Black SN850X 4TB fits better when…
- your priorities are Balanced: higher Value
- the budget decides: 18% lower current price
Nearby market alternative
Worth considering instead
Crucial T710 1TB — same S-tier capability for System Drive, about $426 cheaper · Value 93.
Neither of the two above is the only answer — this one clears the same bar for less. ⇄ Compare all three
Questions and methodology
Which one is better, Kingston KC3000 4TB or Western Digital Black SN850X 4TB?
It depends on the question. For capability (price left out) see the grades by use case; for how good the current price is for what you get, see Value under your priorities; and for the cheapest option today, see current prices. This page keeps the three apart and does not name one overall winner.
Which has the higher Value right now?
Under Balanced, Western Digital WD_Black SN850X 4TB has the higher Value (45 vs 39) in the market snapshot of Nov 9, 2026. Value changes with your priorities and with prices.
At what price does the answer change?
Under Balanced, with Western Digital WD_Black SN850X 4TB at its current price, Kingston KC3000 4TB reaches equal Value at $687. It is a calculation, not a price forecast.
Which one is more capable, ignoring price?
Same grade in all 3 scenarios.
Where can I compare current offers?
The offers section lists every new offer we track for both products in United States, with the date each price was checked. Open in Compare to add more products.