---
product_id: 440921983
title: "Ace A55 2TB 2.5 Inch SATA III SSD, 3D NAND with SLC Cache, Up to 500MB/s, Internal Solid State Drive for Desktop Laptop (SP002TBSS3A55S25)"
brand: "sp silicon power"
price: "NT$11809"
currency: TWD
in_stock: true
reviews_count: 8
category: "Sp Silicon Power"
url: https://www.desertcart.tw/products/440921983-ace-a55-2tb-2-5-inch-sata-iii-ssd-3d
store_origin: TW
region: Taiwan
---

# Up to 500MB/s read speed 2TB massive storage 3D NAND + SLC Cache tech Ace A55 2TB 2.5 Inch SATA III SSD, 3D NAND with SLC Cache, Up to 500MB/s, Internal Solid State Drive for Desktop Laptop (SP002TBSS3A55S25)

**Brand:** sp silicon power
**Price:** NT$11809
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your workflow — speed, space, and reliability in one sleek SSD!

## Quick Answers

- **What is this?** Ace A55 2TB 2.5 Inch SATA III SSD, 3D NAND with SLC Cache, Up to 500MB/s, Internal Solid State Drive for Desktop Laptop (SP002TBSS3A55S25) by sp silicon power
- **How much does it cost?** NT$11809 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/440921983-ace-a55-2tb-2-5-inch-sata-iii-ssd-3d)

## Best For

- sp silicon power enthusiasts

## Why This Product

- Trusted sp silicon power brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Blazing Fast Speeds:** Up to 500MB/s read and 450MB/s write for lightning-quick boot-ups and transfers.
- • **Massive 2TB Storage:** Store your entire digital life without compromise.
- • **Rock-Solid Reliability:** 3-year warranty plus advanced error correction and bad block management for peace of mind.
- • **Next-Gen 3D NAND & SLC Cache:** Enhanced responsiveness and durability for seamless multitasking.
- • **Ultra-Compact 2.5-inch Form Factor:** Fits effortlessly into laptops and desktops, saving space without sacrificing power.

## Overview

The SP Silicon Power Ace A55 2TB SATA III SSD combines a spacious 2TB capacity with fast 500MB/s read speeds and advanced 3D NAND plus SLC Cache technology. Its slim 2.5-inch design fits both laptops and desktops, delivering rapid boot times and smooth application loads. Built for durability and backed by a 3-year warranty, this SSD is the perfect budget-friendly upgrade for professionals seeking reliable, high-performance storage.

## Description

A high-quality product for the budget-minded among us, the Ace A55 is positioned as one of the most cost-effective SSD models. With its advanced SATA III 6Gb/s interface and an affordable price, you can now easily upgrade your old computer without spending a fortune. Still wasting precious time while booting your computer or loading applications? Then it's time to get rid of your old hard drive and switch to an SSD. Powered by SATA III 6Gb/s interface, the Ace A55 is able to boot your computer or launch applications within seconds. Equipped with an original controller and 3D NAND flash, the Ace A55 can not only guarantee stability and durability. It also delivers outstanding performance which enables 10-second quick boot-ups, shorter application load times and faster data transmission speed. Whether you are web surfing, enjoying a good movie, or have to handle paperwork, the Ace A55 will bring you a smooth, lag-free experience. A bad block management (BBM) mechanism detects and marks bad blocks to avoid storage in those blocks and eliminate access errors. And, even if errors do occur in new blocks during an erase, this mechanism can move the data to other effective blocks to prevent data loss resulting from the failed erase. The Ace A55 is one of the lightest and thinnest SSDs of its kind yet it is shock- and vibration-proof, because it contains no moving parts. Equipped with a S.M.A.R.T. monitoring system and ECC (error correction code) technology, it also promises higher data transmission safety. The Ace A55's auto-copy technology allows automatic copy operations from the SLC cache to the 3D NAND Flash inside the NAND without using the controller or DDR. This supports higher efficiency by reducing the controller's and DRAM's workload.

Review: Light and Fast!! Does what its supposed to - Silicon Power is a good SSD no matter what some of the other comments here say. Its not the same say as Samsung but its close enough in terms of quality and speed, the two most important factors when deciding on a SSD. Hey if you really wanted a Samsung then you should go out, pay the fancy price and buy it. Yes I agree that Samsung reliability would be 100% but this ain't too bad either. I already own a Samsung SSD drive and wanted something budget friendly this time. Their Velox series is more for people who are exploring SSD's for the first time. This model Ace A55 is budget friendly mid range SSD which is good for laptops. The best part is that it is smaller in thickness and hence really low on weight. But it may lead to heating in the future as the thicker ones usually have better chip design and cooling built into them. I will know this summer. If installing in a laptop it will make a difference even if you already have other SSD's installed like the M.2 PCIe Gen 3 and have replaced your laptop DVD writer also with an Samsung SSD drive like me. Coming to the speed, a user here has already written an important and very helpful comment, you need to align the SSD partitions and sectors correctly if you want it to perform especially when cloning your old HDD and Windows partitions to it. I suggest the same thing and recommend using Mini Tool Partition to align the partitions to 1MB by default. I didn't need to do all this as its not the primary SSD in my laptop and not going to be the last one either but yes for my primary SSD I did need to. Where this SSD really boosts up speed is on a Macbook. Trust me when I say this but booting up MacOS using a SSD is going to feel supersonic as compared to booting up a HP Pavillion Windows 10. But yes die hard Windows fans a SSD is going to improve your loading and waiting times immensely. Its damn irritating waiting for all the tray icons to load even if you have 16 GB of RAM. For the geeks out there plenty of tests are available to check out the speed of this SSD and I think Silicon Power does not do too poorly in most of them for a mid range SSD. You can also download their ToolBox to test your drives health from time to time. They even provide a licensed cloning software if you dont have Acronis or Mini Tool. As with all my reviews I must post a little caveat, most low to medium priced SSD's including this one require some amount of system RAM to function correctly. So if you buy a SSD like this one 512 GB then be prepared to sacrifice at least 1 GB of RAM to the SSD for its caching tasks etc. That can make a difference on an old 4 GB RAM system especially if you share RAM with the inbuilt Graphics card as well. Therefore first upgrade the RAM on your old PC or laptop and then buy a SSD especially if you intend to use it for high processing power work later and really breathe life into your old system. On older systems a SSD does make a difference but where it really shines would be on a system with adequate processing power and RAM. Also please note 512 GB does not mean it will effectively show up as 512 GB for use on a Windows laptop. Its the way to do with the way the file system reports the effective space on Microsoft based systems when formatted for Windows use. On a Mac it will show up correctly as 512 GB as they have changed their operating system to report the space/size correctly. But its there on both systems as the effective size provided by the manufacturer SP has not gone anywhere. All in all go for this SSD if you want to bump your old Desktop or laptop by a notch when working or gaming by spending a little. If you want to know specifics suggest you visit the manufacturers website and look for Ace A55 which is the model number for this SSD. Its the starting model in their Ace series. For those looking to buy something more pocket friendly I suggest getting this. I am not going to explain 3D NAND etc as it does not matter to most users here but lets just say this does the job in the price you paid.
Review: Decent & well performance - Decent On This price performance 💯

## Features

- 【Versatility】Designed for content creators, DIY system builders, and everyday users who are looking to upgrade their PC for faster boot-ups, data transfers, application loads and response time.
- 【Performance】Sequential read speed up to 500MB/s and write speed up to 450MB/s.
- 【Responsiveness】Adopts 3D NAND flash and SLC Cache technology to improve overall performance.
- 【Compact】2.5-inch SATA SSD (7mm) suitable for desktop and laptop computers.
- 【Reliability】3-year limited manufacturer warranty ensures superior quality and reliability. Please feel free to message us to confirm whether your device is compatible with our product.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Q37V1C9 |
| Best Sellers Rank | #9,941 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #77 in Internal Solid State Drives |
| Box Contents | SP002TBSS3A55S25 x1 |
| Brand | SP Silicon Power |
| Brand Name | SP Silicon Power |
| Cache Memory Installed Size | 2 |
| Color | SATA A55 - 2TB |
| Compatible Devices | Laptop |
| Connectivity Technology | SATA |
| Customer Reviews | 4.2 out of 5 stars 29,516 Reviews |
| Data Transfer Rate | 500 Gigabits Per Second |
| Digital Storage Capacity | 2 TB |
| Enclosure Material | SATA A55 - 2TB |
| Form Factor | 2.5-inch |
| Global Trade Identification Number | 00886576037912 |
| Hard Disk Form Factor | 2.5 Inches |
| Hard Disk Interface | Serial ATA |
| Hard Disk Type | Solid State Drive |
| Hard-Drive Size | 2 TB |
| Hardware Connectivity | SATA 6.0 Gb/s |
| Importer Contact Information | Valuecart private Limited 2nd Floor 1/1 Vinayaka Towers, 1st Cross Gandhinagar Bangalore, Karnataka, 560009 |
| Installation Type | Internal Hard Drive |
| Item Dimensions L x W x Thickness | 10L x 7W x 0.7Th Centimeters |
| Item Height | 0.35 Inches |
| Item Type Name | SATA III SSD |
| Item Weight | 0.7 Ounces |
| Manufacturer | 7F., No.106, Zhouzi St., Neihu District, Taipei City 114, Taiwan, Tel:+886-2-8797-8833, service@silicon-power.com, SP Silicon Power |
| Manufacturer Contact Information | 7F., No.106, Zhouzi St., Neihu District, Taipei City 114, Taiwan, Tel:+886-2-8797-8833, service@silicon-power.com |
| Media Speed | 450 megabits_per_second |
| Model Name | SATA A55 - 2TB |
| Model Number | SP002TBSS3A55S25 |
| Network Connectivity Technology | SATA |
| Number of Items | 1 |
| Packer Contact Information | 5F., No.308-10, Sec. 1, Datong Rd., Xizhi Dist., New Taipei City 221, Taiwan (R.O.C.), Tel:+886-2-7708-1188 |
| Product Features | Compact |
| Read Speed | 560 Megabytes Per Second |
| Special Feature | Compact |
| Specific Uses For Product | Gaming, Multimedia, Personal |
| UPC | 886576037912 |
| Unit Count | 1 Count |
| Warranty Description | 3 year warranty |

## Product Details

- **Brand:** SP Silicon Power
- **Colour:** SATA A55 - 2TB
- **Compatible Devices:** Laptop
- **Connectivity Technology:** SATA
- **Digital Storage Capacity:** 2 TB
- **Hard Disk Description:** Solid State Drive
- **Hard Disk Form Factor:** 2.5 Inches
- **Hard Disk Interface:** Serial ATA
- **Installation Type:** Internal Hard Drive
- **Special Feature:** Compact

## Images

![Ace A55 2TB 2.5 Inch SATA III SSD, 3D NAND with SLC Cache, Up to 500MB/s, Internal Solid State Drive for Desktop Laptop (SP002TBSS3A55S25) - Image 1](https://m.media-amazon.com/images/I/61kG1tX6iML.jpg)

## Available Options

This product comes in different **Material Type** options.

## Questions & Answers

**Q: What is tbw for s55 ?? hopefully i can get the answer from the manufacturer**
A: @Carson - to answer your question, the OP was asking what the TBW for the S55 series of drives from Silicon Power is.

First some preliminary info:
Unfortunately, the question was probably asked incorrectly, at least the vendor appears to believe so as the vendor provided the info for the A55 series. The S55 series is in sizes 120GB, 240GB, 480GB, and 960GB. The A55 series is in sizes (in GB) of 128, 256, 512 (and in TB) 1, 2, 4, 8, 16TB.

All things being equal, they are relatively the same in performance specifications (S55 and A55 of nearly same sizes). However, the S55 series is pretty much defunct by now, though you can still find them available.

Now, on to answer your question:

TBW stands for Total Bytes Written. It is the standard of measure for how long the SSD drive will last, or more correctly, how long you can still write to it. In layman's terms, SSD drives can only have data written to them so many times (in actuality it is the "erase" function which clears a block of space on the drive that this really relates to) and so they in a sense "get used up" after a period of time. All in all it boils down to the old MTBF (Mean Time Before Failure) that regular magnetic hard drives (HDDs) are measured against.

TBW is generally measured in Terabytes (unless otherwise stated) so as an example, if you have a 512GB (Gigabyte) SSD drive that has a TBW of 250 it means that you can write up to 250 Terabytes of data on the drive before you can no longer write to it. In this example, that means you could completely write to the entire drive (and erase/overwrite it) 500 times (512GB being half a Terabyte relatively).

Once you have reached the TBW of the drive, you could no longer write to it, though you can continue to read the existing data on it for as long as the drive works "electronically".

Hope that answers your question as well as possible.

**Q: Does it have power failure protection?**
A: does it matter?  the purpose of power loss protection is to write data from the dram cache to nand (flash) in the event of power loss. If an SSD does not have dram cache (such as this), there are no writes to in dram to protect.  does that necessarily mean a drive is good or will survive a power loss?  depends on firmware-if done correctly, yes.  dram is much faster, so for high end drives, dram is almost a necessity.  some of them with dram to hit high performance numbers do not have power loss capacitors...if you're looking for an application or use case that needs both the performance of dram caching and power loss protection of that dram cache, you likely already know enough to know the answer.  if you don't have one of those use cases, power loss protection is really a moot point.  This is not a drive someone would use for a ZFS ZIL, or a virtual machine swap file datastore, or big SQL server temp db..

**Q: Is this a good boot drive?**
A: I used to own a comp company..still build several high end rigs a year and enequivacly can say these are excellent "not " drives.

Very stable through all functions esp here in Hawaii with sometime spotty power supply.

Rgds and aloha

Tim

**Q: Anyone else have problems with this drive not registering on userbenchmark?**
A: I have not had any issues at all with this drive. I just recently installed it on my pc and it works perfectly

## Customer Reviews

### ⭐⭐⭐⭐⭐ Light and Fast!! Does what its supposed to
*by K***R on 21 March 2019*

Silicon Power is a good SSD no matter what some of the other comments here say. Its not the same say as Samsung but its close enough in terms of quality and speed, the two most important factors when deciding on a SSD. Hey if you really wanted a Samsung then you should go out, pay the fancy price and buy it. Yes I agree that Samsung reliability would be 100% but this ain't too bad either. I already own a Samsung SSD drive and wanted something budget friendly this time. Their Velox series is more for people who are exploring SSD's for the first time. This model Ace A55 is budget friendly mid range SSD which is good for laptops. The best part is that it is smaller in thickness and hence really low on weight. But it may lead to heating in the future as the thicker ones usually have better chip design and cooling built into them. I will know this summer. If installing in a laptop it will make a difference even if you already have other SSD's installed like the M.2 PCIe Gen 3 and have replaced your laptop DVD writer also with an Samsung SSD drive like me. Coming to the speed, a user here has already written an important and very helpful comment, you need to align the SSD partitions and sectors correctly if you want it to perform especially when cloning your old HDD and Windows partitions to it. I suggest the same thing and recommend using Mini Tool Partition to align the partitions to 1MB by default. I didn't need to do all this as its not the primary SSD in my laptop and not going to be the last one either but yes for my primary SSD I did need to. Where this SSD really boosts up speed is on a Macbook. Trust me when I say this but booting up MacOS using a SSD is going to feel supersonic as compared to booting up a HP Pavillion Windows 10. But yes die hard Windows fans a SSD is going to improve your loading and waiting times immensely. Its damn irritating waiting for all the tray icons to load even if you have 16 GB of RAM. For the geeks out there plenty of tests are available to check out the speed of this SSD and I think Silicon Power does not do too poorly in most of them for a mid range SSD. You can also download their ToolBox to test your drives health from time to time. They even provide a licensed cloning software if you dont have Acronis or Mini Tool. As with all my reviews I must post a little caveat, most low to medium priced SSD's including this one require some amount of system RAM to function correctly. So if you buy a SSD like this one 512 GB then be prepared to sacrifice at least 1 GB of RAM to the SSD for its caching tasks etc. That can make a difference on an old 4 GB RAM system especially if you share RAM with the inbuilt Graphics card as well. Therefore first upgrade the RAM on your old PC or laptop and then buy a SSD especially if you intend to use it for high processing power work later and really breathe life into your old system. On older systems a SSD does make a difference but where it really shines would be on a system with adequate processing power and RAM. Also please note 512 GB does not mean it will effectively show up as 512 GB for use on a Windows laptop. Its the way to do with the way the file system reports the effective space on Microsoft based systems when formatted for Windows use. On a Mac it will show up correctly as 512 GB as they have changed their operating system to report the space/size correctly. But its there on both systems as the effective size provided by the manufacturer SP has not gone anywhere. All in all go for this SSD if you want to bump your old Desktop or laptop by a notch when working or gaming by spending a little. If you want to know specifics suggest you visit the manufacturers website and look for Ace A55 which is the model number for this SSD. Its the starting model in their Ace series. For those looking to buy something more pocket friendly I suggest getting this. I am not going to explain 3D NAND etc as it does not matter to most users here but lets just say this does the job in the price you paid.

### ⭐⭐⭐⭐ Decent & well performance
*by S***R on 24 July 2025*

Decent On This price performance 💯

### ⭐⭐⭐⭐⭐ Ssd
*by R***T on 5 November 2025*

Good Quality

## Frequently Bought Together

- Silicon Power 2TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") SSD Internal Solid State Drive (SP002TBSS3A55S25)
- BENFEI SATA Cable III, 3 Pack SATA Cable III 6Gbps Straight HDD SDD Data Cable with Locking Latch 18 Inch Compatible for SATA HDD, SSD, CD Driver, CD Writer - Black
- ORICO 2.5 SSD SATA to 3.5 Hard Drive Adapter Internal Drive Bay Converter Mounting Bracket Caddy Tray for 7 / 9.5 / 12.5mm 2.5 inch HDD / SSD with SATA III Interface(1125SS)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-28*