--- product_id: 530175382 title: "4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25)" brand: "sp silicon power" price: "₱45358" currency: PHP in_stock: true category: "Sp Silicon Power" url: https://www.desertcart.ph/products/530175382-4tb-ssd-3d-nand-a55-slc-cache-performance-boost-sata store_origin: PH region: Philippines --- # 500 MB/s blazing transfer speed 4TB massive storage capacity 7mm ultra-slim form factor 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) **Brand:** sp silicon power **Price:** ₱45358 **Availability:** ✅ In Stock ## Summary > 🚀 Upgrade your workflow with speed and space that keeps you ahead of the curve! ## Quick Answers - **What is this?** 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) by sp silicon power - **How much does it cost?** ₱45358 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/530175382-4tb-ssd-3d-nand-a55-slc-cache-performance-boost-sata) ## 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 Boot & Load Times:** Experience lightning-quick startups and app launches with 500 MB/s transfer speeds powered by advanced 3D NAND technology. - • **Massive 4TB Storage for All Your Needs:** Store your entire professional portfolio, multimedia, and gaming library without compromise. - • **Pro-Level Reliability & Health Monitoring:** Stay ahead with built-in Bad Block Management, ECC, S.M.A.R.T. monitoring, and free SP Toolbox software for real-time SSD health insights. - • **Ultra-Slim 7mm Design for Sleek Ultrabooks:** Seamlessly upgrade your ultra-slim laptop without adding bulk or weight—perfect for on-the-go pros. - • **SLC Cache Tech for Peak Performance & Longevity:** Boost write speeds and extend SSD lifespan with intelligent SLC caching that reduces wear and tear. ## Overview The SP Silicon Power 4TB A55 SSD combines cutting-edge 3D NAND flash and SLC Cache technology to deliver ultra-fast 500 MB/s transfer speeds and exceptional durability. Its slim 7mm profile fits perfectly in ultrabooks and notebooks, while advanced features like Bad Block Management and ECC ensure data integrity. Backed by a 3-year warranty and free health monitoring software, this SSD is engineered for professionals demanding high performance and reliability. ## Description High Transfer Speeds for Fast Start Up Powered by high quality controller and original synchronous NAND flash, Ace A55 delivers incredibly high transfer speeds that enable short boot time, fast application loading and quick file processing. SLC Cache Technology for Performance Boost and Longer Lifespan The A55 especially applies the ”SLC Cache technology” that allows all data to be written in the SLC portion first and leads to higher peak writing performance. In addition, the technology can reduce write amplification and thus offer better endurance and longer lifespan of the SSD. Free-download SSD Health Monitor Tool - SP Toolbox Software The A55 comes with a free-download SSD health monitor tool - SP Toolbox Software, which is especially designed for you to easily monitor the current health status of a SSD. By such, you can run a performance test, get an overall health evaluation and check detailed information about your SSD, including used space on device, device temperature, total bytes written, S.M.A.R.T. status, erase count status and block numbers. *Please download the software at SP Official Website. Absolutely Reliable with Bad Block Management The A55 is built with Bad Block Management, which can continually monitor and replace bad blocks to keep your system in good condition with prolonged lifespan of a SSD. Multiple Techniques Supported The A55 is one of the lightest and thinnest SSD of its kind yet it is shock- and vibration-proof since it contains no moving parts. Furthermore, S.M.A.R.T. monitoring system and ECC technology are equipped to promise higher data transmission safety. 3-year Warranty The Ace A55 is backed by 3-year warranty. *Please register your product via SP official website to get the complete manufacturer warranty services, product support and more. Box Contains 1 x Silicon Power Ace A55 Solid State DriveHigh Transfer Speeds for Fast Start Up Powered by high quality controller and original synchronous NAND flash, Ace A55 delivers incredibly high transfer speeds that enable short boot time, fast application loading and quick file processing. SLC Cache Technology for Performance Boost and Longer Lifespan The A55 especially applies the ”SLC Cache technology” that allows all data to be written in the SLC portion first and leads to higher peak writing performance. In addition, the technology can reduce write amplification and thus offer better endurance and longer lifespan of the SSD. Free-download SSD Health Monitor Tool - SP Toolbox Software The A55 comes with a free-download SSD health monitor tool - SP Toolbox Software, which is especially designed for you to easily monitor the current health status of a SSD. By such, you can run a performance test, get an overall health evaluation and check detailed information about your SSD, including used space on device, device temperature, total bytes written, S.M.A.R.T. status, erase count status and block numbers. *Please download the software at SP Official Website. Absolutely Reliable with Bad Block Management The A55 is built with Bad Block Management, which can continually monitor and replace bad blocks to keep your system in good condition with prolonged lifespan of a SSD. Multiple Techniques Supported The A55 is one of the lightest and thinnest SSD of its kind yet it is shock- and vibration-proof since it contains no moving parts. Furthermore, S.M.A.R.T. monitoring system and ECC technology are equipped to promise higher data transmission safety. 3-year Warranty The Ace A55 is backed by 3-year warranty. *Please register your product via SP official website to get the complete manufacturer warranty services, product support and more. Box Contains 1 x Silicon Power Ace A55 Solid State Drive ## 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. - 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 | | Additional Features | Shock Resistant | | Best Sellers Rank | #69 in Internal Solid State Drives | | Brand | SP Silicon Power | | Built-In Media | 1 x Solid State Drive | | Cache Memory Installed Size | 4 | | Color | Black | | Compatible Devices | Laptop | | Connectivity Technology | SATA | | Customer Package Type | FFP | | Customer Reviews | 4.5 4.5 out of 5 stars (12,419) | | Data Transfer Rate | 500 Megabytes Per Second | | Digital Storage Capacity | 4000 GB | | Enclosure Material | 3D Nand Flash | | Form Factor | 2.5-inch | | Global Trade Identification Number | 00886576069678 | | Hard Disk Description | Solid State Drive | | Hard Disk Form Factor | 2.5 Inches | | Hard Disk Interface | Solid State | | Hard-Drive Size | 4000 GB | | Hardware Connectivity | SATA 6.0 Gb/s | | Installation Type | SSD | | Item Weight | 0.11 Pounds | | Manufacturer | SP Silicon Power | | Media Speed | 500 Megabits Per Second | | Mfr Part Number | SP004TBSS3A55S25AY | | Model Name | A55 | | Model Number | SP004TBSS3A55S25 | | Number of Items | 1 | | Read Speed | 500 Megabits Per Second | | Specific Uses For Product | Business, Multimedia, Personal, Gaming | | UPC | 886576069678 | ## Product Details - **Brand:** SP Silicon Power - **Color:** Black - **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:** SSD - **Special Feature:** Shock Resistant ## Images ![4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) - Image 1](https://m.media-amazon.com/images/I/71+0WTZmyAL.jpg) ## Available Options This product comes in different **Size, Style** 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 ## 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) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ph/products/530175382-4tb-ssd-3d-nand-a55-slc-cache-performance-boost-sata](https://www.desertcart.ph/products/530175382-4tb-ssd-3d-nand-a55-slc-cache-performance-boost-sata) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-07-27*