
SP Silicon Power
The Silicon Power UD90 1TB is a budget‑friendly PCIe 4.0 NVMe M.2 SSD available in 2280 and 2230 form factors. It offers up to 5000 MB/s read and 4800 MB/s write speeds with a DRAM‑less design, 600 TBW endurance and a 5‑year warranty, targeting value‑driven gamers, laptop users and casual creators.
Pros
Current
$178.97
Average
$68.02
Lowest
$38.97
Highest
$178.97
Lower = better sales rank
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Cons
From Expert Reviews
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Criticized by Experts
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Expert Opinion
Professional reviewers consider the UD90 an excellent value proposition for PCIe Gen4x4, applauding its TLC NAND, high sequential speeds and efficient DRAM‑less design, while noting the inevitable write throttling once the SLC cache is exhausted and the modest performance of the 2230 variant for demanding workloads.
What Users Say
Everyday users appreciate the fast boot and game load times, low power draw and the large SLC cache that handles typical multitasking well, but they frequently complain about noticeable write speed drops after the cache fills, higher temperatures without a heatsink, and lower random I/O performance compared to higher‑end drives.
Common Complaints
Write throttling after the SLC cache is depleted, elevated temperatures during prolonged use due to lack of a heatsink, and lower random IOPS/latency compared to DRAM‑equipped SSDs.
How It Compares
vs. Silicon Power FX900 / Inland Platinum P41
Advantages
Disadvantages
Choose the UD90 for better value and endurance; pick FX900/P41 if you prioritize marginally faster burst recovery.
vs. Lexar PLAY (2230)
Advantages
Disadvantages
Select Lexar PLAY for maximum raw speed in compact devices, but UD90 offers better endurance and consistent performance.
vs. Solidigm P44 Pro / E12 / E16
Advantages
Disadvantages
Opt for Solidigm models when you need consistent high write throughput; otherwise the UD90 provides better cost‑efficiency.