Silicon Power Ace A55 SP004TBSS3A55S25 4 TB
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A classic 2.5-inch solid-state drive with SATA3 connection, which stands out among other budget SSDs due to its impressive memory capacity of 4 TB. This solution is suitable for users who need large storage for multimedia files, backups, or replacing HDDs in systems where performance is not critical. The Silicon Power Ace A55 is based on 3D QLC NAND memory with high recording density, which allowed reducing the drive's cost while maintaining capacity.
The Silicon Motion SM2258XT controller is a simplified version of popular solutions—it is not equipped with a DRAM cache, which helps keep the price down, but may limit speed in scenarios with numerous small files or under high system load. Sequential read and write speeds reach 500 and 450 MB/s, respectively, providing a standard level of performance for SATA drives when booting OS, loading programs, and transferring large data. However, when writing large volumes of information for extended periods, speed drops may occur due to the specifics of QLC memory and lack of buffer. The declared resource is 1.5 million hours of mean time between failures. The device is supplemented with an official three-year warranty, meeting the requirements for consumer SSDs of this class.
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Silicon Power 2026 - new arrivals, bestsellers, and the most relevant models Silicon Power.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Silicon Power 2026 - new arrivals, bestsellers, and the most relevant models Silicon Power.
Series Silicon Power Ace (quick interface)Compare using chart →
512 GB, M.2, 22x80, SATA 3, 3D TLC NAND, write: 530 MB/s, read: 560 MB/s, warranty 3 years
Model overview based on user reviews
The Silicon Power Ace A55 SSD offers a budget-friendly option for those looking to enhance their computer's performance. Users appreciate its pleasant pricing and fast speeds, with read speeds slightly over 500 MB/s and write speeds around 400-410 MB/s. However, it is noted that the buffer performance decreases for files larger than 18 GB, dropping speeds to 100-80 MB/s. Despite this, many find it a suitable replacement for traditional HDDs, providing quick system and program loading. On the downside, some users have reported concerns about its longevity, with one user experiencing failure in less than 1.5 years. Overall, it is a viable choice for those seeking an affordable SSD with decent performance, though potential buyers should be aware of its durability issues.
Pros
Cons
A simple ssd, and, as they say, it’s understandable by clothes. The usual plastic transparent container, and the disc itself, that's all. No fasteners, nothing. I personally don't mind, I'm just saying it like it is. Functionally, it is also a normal disk. The peak speed that I measured was a little over 500 MB for reading and 400-410 for writing. The only thing is that files larger than 18 GB in the end clog the buffer, and the speed drops from 400 to 100-80 MB. In principle, it is not critical, and this is extremely rarely transferred to the disk. I use it as the main, under the operating system. I replaced the usual hard one, but the system loads many times faster. It is also normal for programs, they load quickly, which is not surprising at a speed of 400 mb / s and more. If someone is looking for an inexpensive, but full-fledged substitute for the usual hdd, this is it. The price is mega pleasant for such volumes and speed combined. More than fast for the money. The buffer sags after 18 GB in a single file. But I don’t even consider this a minus, because the price eats up all the minuses.  Anton Ch: use Silicon Power SP128GBSS3A55S25 few months |
Don't take it from me, it didn't even last 1.5 years. Speed Uptime  Jey West: use Silicon Power SP128GBSS3A55S25 more than year |
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Silicon Power Ace A55 SP004TBSS3A55S25 configurations
| Price for Silicon Power Ace A55 SP004TBSS3A55S25 | ||||
|---|---|---|---|---|
 | Silicon Power Ace A55 SP001TBSS3A55S25 1 TB | from $213.99 | 1 offer | |
| Silicon Power Ace A55 SP002TBSS3A55S25 2 TB | from $307.49 | 2 offers | |
| Silicon Power Ace A55 SP004TBSS3A55S25 4 TB | from $329.97 | 2 offers | |
| Silicon Power Ace A55 SP128GBSS3A55S25 128 GB | from $32.97 | 1 offer | |
| Silicon Power Ace A55 SP256GBSS3A55S25 256 GB | from $89.40 | 1 offer | |
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We recommendCompare using chart →
1 TB - 8 TB, M.2, 22x80, PCIe 4.0 4x, 3D TLC NAND, 6300 / 6600 MB/s, IOPS 1100 / 1200 K, 7200 / 7300 MB/s, IOPS 800 / 1200 K
500 GB - 4 TB, M.2, 22x80, PCIe 4.0 4x, 3D TLC NAND / 3D QLC NAND, 4000 - 5000 MB/s, IOPS 770 / 900 K, 5000 - 5500 MB/s, IOPS 460 - 730 K
1 TB - 4 TB, M.2, 22x80, PCIe 5.0 2x, 3D TLC NAND, 6300 MB/s, IOPS 1350 / 1400 K, 7150 / 7250 MB/s, IOPS 850 - 1050 K
1 TB - 8 TB, M.2, 22x80, PCIe 5.0 4x, 3D TLC NAND, 13300 / 13400 MB/s, IOPS 2600 K, 14700 / 14800 MB/s, IOPS 1850 / 2200 K
500 GB - 4 TB, M.2, 22x80, PCIe 4.0 4x, 3D QLC NAND, 3500 / 6000 MB/s, IOPS - / 1000 K, 6000 / 7100 MB/s, IOPS - / 1000 K
