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Silicon Power 250GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/3,850 MB/s (SP250GBP44UD9005)
SP Silicon Power

Silicon Power 250GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/3,850 MB/s (SP250GBP44UD9005)

Bottom line: The Silicon Power 250GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5 ($114.38 on Amazon as of 2026-10-07): Up to 5,000/3,850 MB/s sequential read/write over PCIe 4.0 x4; main trade-off: 250GB fills fast: two modern AAA installs and it is full.

$114.38

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Buy on Amazon — $114.38 Compare to similar ssds & storage

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Up to 5,000/3,850 MB/s sequential read/write over PCIe 4.0 x4
  • ✓ 5-year limited warranty from Silicon Power
  • ✓ HMB support keeps latency low on DRAM-less designs
  • ✓ LDPC error correction plus end-to-end data protection built in

Cons

  • ✗ 250GB fills fast: two modern AAA installs and it is full
  • ✗ Write speed of 3,850 MB/s trails Gen4 drives that hit 6,000+
  • ✗ Needs a PCIe 4.0 M.2 slot to reach rated speeds
  • ✗ SLC cache is small at 250GB, so sustained writes slow down

Manufacturer description

The Silicon Power UD90 250GB is a PCIe 4.0 NVMe M.2 drive built for people who want Gen4 bandwidth without paying flagship prices. Silicon Power rates it at up to 5,000 MB/s sequential read and 3,850 MB/s write, roughly double the ceiling of a PCIe 3.0 drive, so game levels, project files, and large media assets land faster when you drop it into a Gen4-capable motherboard slot. SLC caching handles burst writes while LDPC error correction protects the accuracy of data as it moves on and off the NAND, and NVMe 1.4 with Host Memory Buffer support keeps latency low on systems without an onboard…

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SpecPicks Verdict

SpecPicks scored Silicon Power 250GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5 using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. SP Silicon Power's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How fast is the Silicon Power UD90 250GB?

Silicon Power rates it at up to 5,000 MB/s sequential read and 3,850 MB/s sequential write over a PCIe 4.0 x4 connection.

Will it work in a PCIe 3.0 motherboard?

It is a Gen4 M.2 drive and PCIe is backward compatible, but on a PCIe 3.0 slot you get roughly half the bandwidth, so it will not reach the rated 5,000 MB/s.

Is 250GB enough for a gaming PC?

It suits a boot drive or a fast scratch disk. Current AAA titles often run 100GB or more each, so plan on a second drive for a large game library.

What warranty does the UD90 come with?

Silicon Power lists a 5-year limited warranty. Check the product listing for the current terms and registration requirements in your region.

Does it need a heatsink or extra software?

The listing does not include a heatsink; use your motherboard's M.2 thermal pad if it has one. The drive relies on standard NVMe 1.4 support, so no special driver is required on current Windows or Linux builds.

Key Features

  • To bolster its multi-tasking factor even further, the UD90 takes advantage of increased bandwidth when used in conjunction with motherboards equipped with PCIe 4.0 slots. In fact, it has nearly double the bandwidth of PCIe 3.0 for shorter download times and the ability to download more files within the same amount of time.
  • An SSD's speed is meaningless without the ability to handle that speed reliably. The UD90 achieves improved sequential read/write and random read/write performance with support for SLC Caching. At the same time, it supports low density parity check (LDPC) coding to ensure accuracy of data transmission and reliability of data access.
  • The UD90 supports RAID to protect data in the case of a drive failure. It's also equipped with built-in E2E data protection for enhanced data transfer integrity. Unexpected things can happen at any moment, but the UD90 is prepared for them with your data at its utmost priority.
  • 5-year limited warranty

Full Specifications

BrandSP Silicon Power
Model NameUd90
Read Speed5000 Megabytes Per Second
Media Speed850 megabits_per_second
Model NumberUD902280
Built-In Media1 x Silicon Power UD90 Solid State Drive
Hard Disk Size250 GB
Hard-Drive Size250 GB
Mfr Part NumberUD902280
Number of Items1
Special FeaturePortable
Installation TypeInternal Hard Drive
Compatible DevicesDesktop
Enclosure MaterialNand
Additional FeaturesPortable
Hard Disk InterfaceRaid
Warranty Description5-year limited warranty
Hard Disk DescriptionSolid State Drive
Hard Disk Form Factor2.5 Inches
Hardware ConnectivityPCI Express 4.0

Ready to buy?

Silicon Power 250GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/3,850 MB/s (SP250GBP44UD9005) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $114.38

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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Silicon Power 250GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/3,850 MB/s (SP250GBP44UD9005)
$114.38
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