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Silicon Power 2TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/4,800 MB/s (SP02KGBP44UD9005)
SP Silicon Power

Silicon Power 2TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/4,800 MB/s (SP02KGBP44UD9005)

Bottom line: The Silicon Power 2TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5 ($279.97 on Amazon as of 2026-10-06): PCIe 4.0 reads rated up to 5,000 MB/s, near double a Gen3 drive's ceiling; main trade-off: listing text quotes 4,500 MB/s writes while the title claims 4,800 MB/s.

$279.97

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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 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ PCIe 4.0 reads rated up to 5,000 MB/s, near double a Gen3 drive's ceiling
  • ✓ SLC caching lifts sequential and random write performance under burst loads
  • ✓ LDPC coding plus end-to-end data protection for transfer integrity
  • ✓ RAID support, so it can be mirrored in a multi-drive build

Cons

  • ✗ Listing text quotes 4,500 MB/s writes while the title claims 4,800 MB/s
  • ✗ Spec sheet omits TBW endurance, DRAM cache and controller details
  • ✗ Needs a PCIe 4.0 board; a Gen3 slot caps it near half the bandwidth
  • ✗ Rated reads trail the fastest PCIe 4.0 M.2 drives available

Manufacturer description

The Silicon Power UD90 2TB is a PCIe 4.0 x4 NVMe M.2 SSD (model SP02KGBP44UD9005) built for people who want Gen4 sequential throughput without stepping up to a flagship drive. Silicon Power rates it at up to 5,000 MB/s read and up to 4,800 MB/s write, roughly double the bandwidth ceiling of a PCIe 3.0 drive, so large game installs, 4K project files and OS images move in less time on a Gen4 motherboard. SLC caching absorbs bursts of sequential and random writes, while LDPC coding and built-in end-to-end data protection guard the integrity of what gets written. The drive also supports RAID, so…

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SpecPicks Verdict

SpecPicks scored Silicon Power 2TB 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 2TB?

The product title rates it at up to 5,000 MB/s sequential read and up to 4,800 MB/s sequential write. Note that Silicon Power's own description lists writes at up to 4,500 MB/s, so treat 4,500-4,800 MB/s as the realistic write ceiling. Actual speeds depend on your motherboard, file sizes and how much SLC cache is available.

Do I need a PCIe 4.0 motherboard to get full speed?

Yes. Silicon Power states the UD90 takes advantage of the increased bandwidth only when paired with a motherboard that has PCIe 4.0 M.2 slots, which offers nearly double the bandwidth of PCIe 3.0. Confirm your board's M.2 slot generation on the product listing before buying.

What warranty comes with the UD90?

Silicon Power lists a 5-year limited warranty on this drive. Endurance (TBW) is not published in the listing, so check the product page or Silicon Power directly for current warranty and endurance terms.

Can the UD90 be used in a RAID array?

Yes. The UD90 supports RAID to protect data in the event of a drive failure, and it includes built-in end-to-end data protection for transfer integrity. That makes it a reasonable choice for a mirrored pair in a workstation rather than a single-drive setup.

Is the 2TB UD90 worth it compared with faster Gen4 drives?

It is positioned as a budget PCIe 4.0 option: 5,000 MB/s reads sit below the quickest Gen4 M.2 drives, but it is backed as a capacity play. Pick it for a 2TB game library, media scratch disk or secondary drive rather than a maximum-throughput boot drive.

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
Color2TB
Model NameSP02KGBP44UD9005
Read Speed5000 megabytes_per_second
Unit Count1 Count
Form FactorM2
Media Speed4800 MB/s
Model NumberSP02KGBP44UD9005AY
Built-In Mediasolid state drive
Hard-Drive Size2 TB
Mfr Part NumberSP02KGBP44UD9005AY
Number of Items1
Special FeatureBackward Compatible
Installation TypeInternal Hard Drive
Compatible DevicesGaming Console, Laptop
Data Transfer Rate5000 megabits_per_second
Enclosure MaterialNand
Additional FeaturesBackward Compatible
Hard Disk InterfaceSolid State
Warranty Description5 years warranty

Ready to buy?

Silicon Power 2TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/4,800 MB/s (SP02KGBP44UD9005) 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 — $279.97

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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Silicon Power 2TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/4,800 MB/s (SP02KGBP44UD9005)
$279.97
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