---
product_id: 634015597
title: "– Ace A55 4TB SATA SSD, Up to 500MB/s, 3D NAND with SLC Cache, 2.5 Inch SATA III 6Gb/s Internal Solid State Drive for Desktop Laptop PC Computer"
brand: "sp silicon power"
price: "A$800"
currency: AUD
in_stock: true
reviews_count: 5
category: "Sp Silicon Power"
url: https://www.desertcart.com.au/products/634015597-ace-a55-4tb-sata-ssd-up-to-500mb-s-3d
store_origin: AU
region: Australia
---

# Up to 500MB/s transfer speed 4TB massive storage capacity 3D NAND with SLC Cache tech – Ace A55 4TB SATA SSD, Up to 500MB/s, 3D NAND with SLC Cache, 2.5 Inch SATA III 6Gb/s Internal Solid State Drive for Desktop Laptop PC Computer

**Brand:** sp silicon power
**Price:** A$800
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your workflow with speed and space that means business!

## Quick Answers

- **What is this?** – Ace A55 4TB SATA SSD, Up to 500MB/s, 3D NAND with SLC Cache, 2.5 Inch SATA III 6Gb/s Internal Solid State Drive for Desktop Laptop PC Computer by sp silicon power
- **How much does it cost?** A$800 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/634015597-ace-a55-4tb-sata-ssd-up-to-500mb-s-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

- • **Massive 4TB Storage:** Store your entire digital life—projects, media, and more—without compromise.
- • **Sleek 7mm Slim Design:** Perfectly fits ultrabooks and ultra-slim notebooks for a seamless upgrade.
- • **Rock-Solid Reliability:** Supports TRIM, Garbage Collection, RAID, and ECC for optimized performance and peace of mind.
- • **Advanced 3D NAND & SLC Cache:** Boosted performance and extended lifespan thanks to cutting-edge flash memory technology.
- • **Blazing Fast Boot & Load Times:** Experience lightning-quick system startups and app launches with up to 500MB/s read speeds.

## Overview

The SP Silicon Power Ace A55 4TB SATA SSD delivers up to 500MB/s transfer speeds using advanced 3D NAND flash with SLC Cache technology. Its slim 7mm 2.5-inch form factor fits desktops and ultrabooks alike, offering massive 4TB storage with enhanced reliability features like TRIM, Garbage Collection, RAID, and ECC. Ideal for professionals seeking a fast, spacious, and durable internal SSD solution.

## Description

Buy SP Silicon Power Ace A55 4TB SATA SSD, Up to 500MB/s, 3D NAND with SLC Cache, 2.5 Inch SATA III 6Gb/s Internal Solid State Drive for Desktop Laptop PC Computer online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: All is ok
Review: Excellente qualité

## Features

- 3D NAND flash are applied to deliver high transfer speeds
- Remarkable transfer speeds that enable faster bootup and improved overall system performance. The advanced SLC Cache Technology allows performance boost and longer lifespan
- 7mm slim design suitable for Ultrabooks and Ultra-slim notebooks.
- Supports TRIM command, Garbage Collection technology, RAID, and ECC (Error Checking & Correction) to provide the optimized performance and enhanced reliability.
- 3-year limited warranty. (Please register your product via SP official website to get the complete manufacturer warranty services, product support and more.)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BVLRFFWQ |
| Are Batteries Included | No |
| Best Sellers Rank | #18,419 in Computers ( See Top 100 in Computers ) #185 in Internal Solid State Drives |
| Brand | SP Silicon Power |
| Color | A55 |
| Customer Reviews | 4.1 4.1 out of 5 stars (2,502) |
| Date First Available | 2 May 2024 |
| Form Factor | 2.5-inch |
| Hard Disk Description | Solid State Drive |
| Hard Drive Interface | Solid State |
| Hard Drive Size | 4000 GB |
| Item Weight | 50 g |
| Item model number | SP004TBSS3A55S25AY |
| Manufacturer | SP Silicon Power |
| Product Dimensions | 10 x 6.99 x 0.7 cm; 50 g |
| Series | SP004TBSS3A55S25 |

## Product Details

- **Brand:** SP Silicon Power
- **Colour:** A55
- **Compatible devices:** Laptop
- **Connectivity technology:** SATA
- **Digital storage capacity:** 4000 GB
- **Hard disk description:** Solid State Drive
- **Hard disk form factor:** 2.5 Inches
- **Hard disk interface:** Solid State
- **Installation type:** Internal Hard Drive
- **Special features:** Compact

## Images

![– Ace A55 4TB SATA SSD, Up to 500MB/s, 3D NAND with SLC Cache, 2.5 Inch SATA III 6Gb/s Internal Solid State Drive for Desktop Laptop PC Computer - Image 1](https://m.media-amazon.com/images/I/71+0WTZmyAL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Review
*by D***É on 16 June 2024*

All is ok

### ⭐⭐⭐⭐⭐ Review
*by T***N on 7 December 2025*

Excellente qualité

### ⭐⭐⭐⭐⭐ Review
*by T***S on 9 November 2024*

Its super fast and quiet of course. There were some reviews mentioned it lags when writing large files to it. This is true because it does not contain the buffer circuitry on the SAMSUNG ssd drives. This will not be an issue for you if you use Aomei or EaseUS partitions software. There is a box you can check, optimise for ssd, to speed up the cloning massively. My steps to move OS- 1 - Clone the System Reserved Partition 2 - Clone the OS partition Be sure not to miss step 1. Of course you can clone the entire drive it is much simpler but I did not do this because it will take forever. What you will want to have in case of boot issues: -Windows PE disc -EasyBCD (critical), and a way to run it Sustained write speeds will not be much of an issue for most people once it's migrated / cloned or setup. If it is an issue for you, shell out the shekels for the Samsung. As all flash memory does, it operates way faster with small files, sustained writes and probably even reads, are going to slow down after about 500mb of file size This is a great value and it will perform fine for most users. Very cool to have and great value I do not regret this purchase even .001%. Would have like to get the Samsung, but its 3X as much money, for what boils down to nearly the same thing, once the drive is cloned Make sure to check optimize for ssd in cloning software. Definitely use fast mode clone (copy files) in Aomei to save yourself hours. I'd probably avoid using clonezilla because it wiped my boot record then failed to clone, and it takes forever in sector clone mode. Do not expect the disc cloning to be easy or fast, it will not be unless you clone entire drive, and if you do that and your drive is huge then prepare to wait overnight if not days. So is why I suggested the steps above. Only took about 30 minutes to clone a 270 gb partition just now. works best to just not delete anything on source disk and you will be fine as long as you are able to run EasyBCD again (make sure that you can!)

## Frequently Bought Together

- SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25)
- 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
- Silicon Power 2TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") SSD Internal Solid State Drive (SP002TBSS3A55S25)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-08*