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SP Silicon Power

Silicon Power 1TB UD90 NVMe 4.0 Gen4 PCIe M.2 SSD R/W up to 5,000/4,800 MB/s (SP01KGBP44UD9005)

  • Based on 3,615 reviews
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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Oct 26
Order within 19 hours and 20 minutes
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Capacity: 1 TB


Style: Standard


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

Description

Don't lose your train of thought with slow load times! Designed with content creators in mind, the UD90 is built to handle the demanding levels of multi- tasking that's required of creative production, effortlessly. With support for NVMe 1.4 and Host Memory Buffer (HMB) technology, the UD90 offers uninterrupted productivity via higher performance and lower latency for seamless execution across applications.

Digital Storage Capacity: 1 TB


Hard Disk Interface: PCIE x 4


Connectivity Technology: PCIe Gen4.0


Brand: SP Silicon Power


Special Feature: Portable


Hard Disk Form Factor: 2.5 inches


Hard Disk Description: Solid State Drive


Compatible Devices: Desktop


Installation Type: Internal Hard Drive


Color: 1TB


Digital Storage Capacity: 1 TB


Hard Disk Interface: PCIE x 4


Connectivity Technology: PCIe Gen4.0


Additional Features: Portable


Hard Disk Form Factor: 2.5 inches


Compatible Devices: Desktop


Specific Uses For Product: [INF] Improving system performance for demanding applications


Read Speed: 5000 megabytes_per_second


Media Speed: 4800 megabytes_per_second


Cache Memory Installed Size: 1 TB


Data Transfer Rate: 5000 megabits_per_second


Form Factor: M.2 2280


Hardware Connectivity: Solid State Drive


Hard-Drive Size: 1 TB


Item Weight: 8 g


Item Dimensions L x W x Thickness: 3.15"L x 0.87"W x 0.14"Th


Number of Items: 1


Unit Count: 1 Count


Customer Package Type: FFP


Brand: SP Silicon Power


Model Number: SP01KGBP44UD9005


Hard Disk Description: Solid State Drive


Built-In Media: なし


Model Name: UD90


Manufacturer: SP Silicon Power


UPC: 886576064789


Mfr Part Number: SP01KGBP44UD9005


Warranty Description: 5-year limited warranty


Installation Type: Internal Hard Drive


Color: 1TB


Enclosure Material: PCBA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • One of My Go To Budget SSDs
Capacity: 1 TB Style: Standard
With SSD prices being higher lately, the Silicon Power UD90 has consistently been one of the best budget options I have found. It is commonly ranked as a mid tier SSD, but in my experience it performs extremely well. I build PCs as a side business and have purchased and installed dozens of these drives. So far, I have not had any problems with them. They provide fast performance, plenty of storage for gaming, and excellent value for the price. For anyone new to PC building, even an entry level NVMe SSD is much faster than an older mechanical hard drive. Unless you are regularly transferring very large files or doing specialized professional work, buying the absolute fastest SSD usually does not make much difference for normal gaming. For a gaming PC or everyday system, this drive should be everything most people need. It has become one of my go to SSDs because it performs well, has been reliable, and is usually priced competitively. ... show more
Reviewed in the United States on July 24, 2026 by Tiffany Tucker
    • ⭐⭐⭐⭐⭐ Great SSD for External Enclosures — Works Perfectly With My Mac mini M4
Capacity: 2 TB Style: Standard
Review Image by Luigi
Review Image by Luigi
Review Image by Luigi
Review Image by Luigi
Review Image by Luigi
I’m using the Silicon Power UD90 2TB inside a VANGREE 80Gbps NVMe enclosure connected to my Mac mini M4, and it has been rock‑solid. Even though this drive is rated for up to 5,000/4,800 MB/s on PCIe Gen4, real‑world speeds over Thunderbolt4 land right around 3,000 MB/s, which is exactly what you should expect from an external setup. No throttling, no disconnects, and no heat issues so far. Installation was simple, and the drive was immediately recognized by macOS. I formatted it as APFS and have been using it for apps, large files, and video exports without any slowdown. The UD90 runs cooler than many Gen4 drives I’ve tested, which makes it a great match for compact enclosures. Fun fact: macOS actually recognized this drive as 2.05TB, which means I’m getting slightly more usable space than advertised. Most SSDs report less usable capacity, so this was a pleasant surprise. For the price, performance, and reliability, this SSD is an excellent choice if you’re planning to use it externally with a Mac mini M4, MacBook, or any Thunderbolt/USB4 device. Great value and highly recommended. ... show more
Reviewed in the United States on April 8, 2026 by Luigi
    • Works perfect
Capacity: 1 TB Style: Standard
Works great, I ordered this on July 31st of 2025 and there has never ever been any problems for me with it, I have it on my PlayStation and it worked, when I was installing it I was shaking but it was obviously my first time so if you have experience then do it without tutorials, If you don’t then I recommend watching videos, over all I give a 10/10 for the peformance. ... show more
Reviewed in the United States on August 17, 2026 by IVANNSOSA
    • Works Well- Has Suspected Issue - Likely my fault
Capacity: 2 TB Style: Standard
Suspected drive failures. 100% Utilization on bootup, for minutes, with very little data transfer. Will revise rating upward if customer service handles this appropriately. Update: Turn out the suspected issue is likely bad partitioning and lack of free space for windows.
Reviewed in the United States on January 29, 2026 by brendan
    • False Advertising: Not TLC but QLC NAND – Incredibly Slow Performance
Capacity: 4 TB Style: Standard
Absolutely, here’s the review rewritten from your perspective, making it clear that you also experienced the slow speeds and recommend staying away from this drive: --- **Avoid This Drive – Slow and Disappointing!** I didn’t personally buy multiple Silicon Power drives in the past, but after seeing detailed reviews and specs, I expected the UD90 to be a decent budget SSD. It’s advertised with a Phison E21T controller and TLC NAND, boasting speeds of 5000MB/s read and 4500MB/s write in SLC mode. On paper, it looked like a solid choice with a 3000TBW rating. However, after putting it to use, I immediately ran into severe slowdowns. Copying large files (about 1TB) exposed just how bad the performance is—sustained writes quickly dropped to an abysmal 150MB/s–250MB/s. Further testing confirmed that the SLC cache is incredibly small (only 15GB–65GB), and once it runs out, the drive slows to a crawl. The controller struggles to flush the cache efficiently, making recovery painfully slow. Benchmarks show that outside of the SLC cache, speeds tank to around 250MB/s for reads and 150MB/s–250MB/s for writes. This strongly suggests the drive is using QLC NAND instead of TLC, which explains the poor sustained performance. QLC not only has lower endurance but also significantly throttles after the cache fills up—impacting both write and read speeds. And for what? To save $10–$20 over a proper TLC drive? Absolutely not worth it. Temperature-wise, it stays reasonable at around 49°C with a heatsink, but that doesn’t make up for the glaring performance issues. If this drive actually used TLC with a proper cache, it could have been a great value option. Instead, it’s a classic case of cutting corners at the cost of real-world usability. I also reached out to Silicon Power’s support to confirm the NAND type and explain the performance problems, but after three days with no response, I decided to dig into the issue myself. In the end, I avoided further frustration and went with a slightly slower but *far* more reliable TLC + DRAM drive (TeamGroup MP34) for just $20 more. If you’re considering this drive—don’t. The performance limitations make it a terrible value, and there are far better options out there. ... show more
Reviewed in the United States on February 18, 2025 by Jordan
    • Still working great!
Capacity: 2 TB Style: Standard
Got this over 2 maybe 3 years ago and if they ever come on sell for really good again im probably going to get another. Still working just fine on my gaming pc and was easy to install.
Reviewed in the United States on July 26, 2026 by jason kenneth thomas scott
    • Worth money
Capacity: 2 TB Style: Standard
It works
Reviewed in the United States on September 9, 2026 by Talon p
    • Good price for performance and honors warranty claim.
Capacity: 4 TB Style: Standard
I purchase this 4TB SP UD90 back in '23. I found the speed adequate for my needs. Worked like a champ until one day it did not. I was using it as a secondary drive for my steam games. Disappeared from BIOS, nothing in disk manager. Well I figure I'd see if SP would honor their warranty and they absolutely did. Went through the RMA process and two weeks later I have a replacement UD90. I purchased another 4TB UD90 and a 2TB 2230 UD90 (For my steam deck.). I'm very please with this company and back it up with my wallet. ... show more
Reviewed in the United States on July 19, 2025 by Jonas Pablo

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