Silicon Power UD90 4TB
The current Silicon Power UD90 4TB price from retailers, its key specifications, and how it performs for each job.
Silicon Power · SSD · PCIe 4.0
Works well for: Game & File Storage, System Drive
Trade-offs: you want strong value with Balanced priorities specifically
- Capacity
- 4 TB
- Interface
- M.2 PCIe 4.0 x4
- Sequential read
- 5000 MB/s
- Sequential write
- 3200 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 $580 the Silicon Power UD90 4TB is priced 13% below its $669 representative market level. Only 2 verified new offers stand behind it, so the level can move quickly.
Consider: Western Digital SN7100 500GB offers stronger value around $96.Compare
Prices & availability
Silicon Power UD90 4TB: current price and offers
Compare the offers we track for this model, across variants and retailers.
2 tracked offers · 2 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| Silicon Power UD90 4TB | B&H | New | $580 | 37 | 2026-11-14 | View offer → |
| Silicon Power UD90 4TB | MemoryC | New | $758 | 28 | 2026-11-14 | View offer → |
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.
#93 of 252 graded solid state drives
- #90 Western DigitalWestern Digital SN770M 2TB 35
- #91 Western DigitalWestern Digital Black SN770 1TB 35
- #92 Western DigitalWestern Digital SN770M 1TB 35
- #93 Silicon PowerSilicon Power UD90 4TB 34
- #94 TeamGroupTeamGroup MP44L 2TB 34
- #95 PatriotPatriot VP4000 Mini 2TB 34
- #96 Silicon PowerSilicon Power UD90 2TB 34
Value Balanced
How much of that you get for today’s price.
#132 of 252 currently priced solid state drives
- #129 TeamGroupTeamGroup MP33 256GB 38
- #130 PatriotPatriot P220 512GB 38
- #131 GigabyteGigabyte 2500E 1TB 37
- #132 Silicon PowerSilicon Power UD90 4TB 37
- #133 LexarLexar NQ100 480GB 36
- #134 PNYPNY CS900 250GB 36
- #135 SamsungSamsung 990 EVO 1TB 36
Performance System Drive
How much it can do. Price plays no part in this ranking.
#93 of 252 graded solid state drives
- #90 Western DigitalWestern Digital SN770M 2TB 35
- #91 Western DigitalWestern Digital Black SN770 1TB 35
- #92 Western DigitalWestern Digital SN770M 1TB 35
- #93 Silicon PowerSilicon Power UD90 4TB 34
- #94 TeamGroupTeamGroup MP44L 2TB 34
- #95 PatriotPatriot VP4000 Mini 2TB 34
- #96 Silicon PowerSilicon Power UD90 2TB 34
Value System Drive
How much of that you get for today’s price.
#160 of 252 currently priced solid state drives
- #157 Silicon PowerSilicon Power S55 240GB 16
- #158 SamsungSamsung 970 Evo 1TB 15
- #159 SeagateSeagate FireCuda 530R 4TB 15
- #160 Silicon PowerSilicon Power UD90 4TB 15
- #161 PatriotPatriot P220 512GB 15
- #162 SabrentSabrent Rocket Plus 4TB 15
- #163 LexarLexar NS100 256GB 15
Performance Game
How much it can do. Price plays no part in this ranking.
#24 of 252 graded solid state drives
- #21 SabrentSabrent Rocket Plus 4TB 26
- #22 KingstonKingston NV3 4TB 26
- #23 Western DigitalWestern Digital WD Blue SN5000 4TB 26
- #24 Silicon PowerSilicon Power UD90 4TB 26
- #25 Silicon PowerSilicon Power XS70 4TB 26
- #26 Western DigitalWestern Digital Blue SA510 4TB 26
- #27 SamsungSamsung 870 Evo 4TB 26
Value Game
How much of that you get for today’s price.
#65 of 252 currently priced solid state drives
- #62 PatriotPatriot P220 256GB 74
- #63 PNYPNY CS900 1TB 73
- #64 MSIMSI SPATIUM M450 1TB 73
- #65 Silicon PowerSilicon Power UD90 4TB 72
- #66 TeamGroupTeamGroup FORCE G50 512GB 72
- #67 PatriotPatriot VP4000 Mini 2TB 72
- #68 PNYPNY CS900 2TB 72
Performance Heavy Creative Work
How much it can do. Price plays no part in this ranking.
#119 of 252 graded solid state drives
- #116 PatriotPatriot VP4000 Mini 1TB 25
- #117 TeamGroupTeamGroup MP44S 1TB 25
- #118 CrucialCrucial P310 500GB 24
- #119 Silicon PowerSilicon Power UD90 4TB 23
- #120 Silicon PowerSilicon Power UD90 2TB 23
- #121 Silicon PowerSilicon Power UD90 1TB 23
- #122 Western DigitalWestern Digital Green SN350 2TB 21
Value Heavy Creative Work
How much of that you get for today’s price.
#113 of 252 currently priced solid state drives
- #110 Western DigitalWestern Digital Green SN350 1TB 40
- #111 SamsungSamsung 990 EVO 1TB 39
- #112 LexarLexar NM790 8TB 39
- #113 Silicon PowerSilicon Power UD90 4TB 39
- #114 MSIMSI SPATIUM M450 500GB 39
- #115 Silicon PowerSilicon Power XS70 4TB 39
- #116 Western DigitalWestern Digital Blue SN580 2TB 39
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 Value37 | Higher capability Crucial T710 1TB 81 +198% capability · -60% price | Higher Value with current priorities Western Digital SN7100 500GB 100 +36% capability · -83% price |
| System DriveScenario capability | GradeA
Value15 | Higher capability Crucial T710 1TB S 86 +198% capability · -60% price | Higher Value with current priorities Western Digital SN7100 500GB S 100 +36% capability · -83% price |
| Game & File StorageScenario capability | GradeS
Value72 | — | Higher Value with current priorities TeamGroup MP44Q 4TB S 91 +0% capability · -14% price |
| Heavy Creative WorkScenario capability | GradeB
Value39 | Higher capability Western Digital SN8100 2TB S 88 +338% capability · -22% price | Higher Value with current priorities Crucial T710 1TB S 100 +328% capability · -60% 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
- 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 $265, against a cheapest tracked $580
- Value for money matters more to you than this exact modelWestern Digital SN7100 500GB holds Relative Value 100 against its 37 with Balanced priorities, at $96
Works well if
- System Drive is your main prioritygraded A 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 modelWestern Digital SN7100 500GB holds Relative Value 100 against its 15 for System Drive, at $96
- 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: ~$525$525 is where Relative Value reaches 80 for Game, in the 2026-11-09–2026-11-14 offer frame
Consider other options if
- Current price sits $55 above the strong-value threshold (~$525)cheapest tracked $580 against a $525 calculated threshold for Game
- Value for money matters more to you than this exact modelTeamGroup MP44Q 4TB holds Relative Value 91 against its 72 for Game, at $500
Works well if
- Heavy Creative Work is your main prioritygraded B 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 modelCrucial T710 1TB holds Relative Value 100 against its 39 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 Silicon Power UD90 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
- 5000 MB/s
- Sequential write
- 3200 MB/s
- Random read
- 0 IOPS
- Random write
- 0 IOPS
Media
- Capacity
- 4 TB
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
- SU04KGBP44UD9005BH
Hover any value to see where it came from: a manufacturer specification, or a figure TheComparator.Tech calculated.
Sources: Comparator offer frame 2026-11-09–2026-11-14
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
Below Sony's PS5 speed guidance
Sony asks for PCIe 4.0 and 5500 MB/s read; this drive reads 5000 MB/s over M.2 PCIe 4.0 x4
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
Silicon Power UD90 4TB offers a balanced view across an all-round mix of priorities. It ranks #93 by capability in the current modelled field. Its clearest measured strength is drive capability 5000. Western Digital SN7100 500GB currently clears the same practical bar with stronger Relative Value.
Silicon Power UD90 4TB offers A-grade capability for System Drive. It ranks #93 by capability in the current modelled field. Its clearest measured strength is drive capability 5000. Western Digital SN7100 500GB currently clears the same practical bar with stronger Relative Value.
Silicon Power UD90 4TB offers S-grade capability for Game. It ranks #24 by capability in the current modelled field. Its clearest measured strength is drive capability 5000. TeamGroup MP44Q 4TB currently clears the same practical bar with stronger Relative Value.
Silicon Power UD90 4TB offers B-grade capability for Heavy Creative Work. It ranks #119 by capability in the current modelled field. Its clearest measured strength is drive capability 5000. Western Digital SN7100 500GB 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.
Useful links & sources
offer frame 2026-11-09–2026-11-14 · formula ssd-value-v6.1 · facts facts-2026-11-14 · 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.