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Silicon Power 500GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/2,700 MB/s (SP500GBP44UD9005)
SP Silicon Power

Silicon Power 500GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/2,700 MB/s (SP500GBP44UD9005)

Bottom line: The Silicon Power 500GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5 ($109.97 on Amazon as of 2026-10-07): PCIe Gen4 x4 speeds up to 5,000 MB/s read; main trade-off: 2,700 MB/s write is well under its 5,000 MB/s read.

$109.97

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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 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ PCIe Gen4 x4 speeds up to 5,000 MB/s read
  • ✓ 5-year limited warranty from Silicon Power
  • ✓ SLC caching lifts sequential and random performance
  • ✓ LDPC error correction plus end-to-end data protection

Cons

  • ✗ 2,700 MB/s write is well under its 5,000 MB/s read
  • ✗ 500GB fills fast with modern 100GB+ game installs
  • ✗ Falls back to Gen3 speeds on older motherboards
  • ✗ No heatsink included in the M.2 2280 package

Manufacturer description

Drop it into a PCIe 4.0 motherboard slot and you get roughly double the bandwidth of a PCIe 3.0 drive, which shortens large game installs, project file transfers, and download-heavy workloads. Silicon Power backs the raw speed with SLC caching to lift both sequential and random read/write performance, plus LDPC error correction to keep data transmission accurate as the NAND ages. The UD90 also supports RAID for drive-failure protection and includes built-in end-to-end (E2E) data protection for transfer integrity. In a PCIe 3.0 slot it still works, just capped at Gen3 speeds. The 500GB…

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SpecPicks Verdict

SpecPicks scored Silicon Power 500GB 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

Will the UD90 work in a PCIe 3.0 motherboard?

Yes. It is backward compatible with PCIe 3.0 M.2 slots, but you will not see the full Gen4 bandwidth. Silicon Power notes PCIe 4.0 offers nearly double the bandwidth of PCIe 3.0, so a Gen4 slot is where the 5,000 MB/s read rating applies.

How fast is the Silicon Power UD90 500GB?

It is rated up to 5,000 MB/s sequential read and 2,700 MB/s sequential write. SLC caching also improves random read/write performance, though real-world speeds vary with your motherboard, workload, and how full the drive is.

What warranty does the UD90 come with?

Silicon Power covers the UD90 with a 5-year limited warranty. Check the product listing for current registration requirements and regional terms.

Is 500GB enough for gaming?

It is enough for Windows plus a small rotation of titles, since single AAA installs now routinely exceed 100GB. Treat this capacity as a fast boot drive or secondary game drive rather than your whole library.

Does the UD90 protect against data loss?

It supports RAID configurations to guard against drive failure, and includes built-in end-to-end (E2E) data protection for transfer integrity plus LDPC coding for data accuracy. None of that replaces a separate backup.

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
Color500GB
Special FeaturePortable
Installation TypeInternal Hard Drive
Compatible DevicesDesktop
Hard Disk InterfaceRaid
Hard Disk DescriptionSolid State Drive
Hard Disk Form Factor2280 Inches
Connectivity TechnologyNVME
Digital Storage Capacity500 GB

Ready to buy?

Silicon Power 500GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/2,700 MB/s (SP500GBP44UD9005) 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 — $109.97

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

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Silicon Power 500GB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/2,700 MB/s (SP500GBP44UD9005)
$109.97
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