--- 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: "23226414₫" currency: VND in_stock: true reviews_count: 13 category: "Sp Silicon Power" url: https://www.desertcart.vn/products/530175382-4tb-ssd-3d-nand-a55-slc-cache-performance-boost-sata store_origin: VN region: Vietnam --- # 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:** 23226414₫ **Availability:** ✅ In Stock ## Summary > 🚀 Upgrade your workflow with speed and space that keeps up with your ambition! ## 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?** 23226414₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/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 - • **Lightning-Fast Boot & Load Times:** Experience near-instant startup 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, media library, and more without compromise. - • **Sleek 7mm Design Fits Ultra-Slim Laptops:** Upgrade your ultrabook or notebook effortlessly with a shock-resistant, featherlight 2.5-inch SSD. - • **Pro-Level Reliability & Health Monitoring:** Stay ahead with built-in Bad Block Management, ECC, S.M.A.R.T. support, and free SP Toolbox software for real-time SSD health insights. - • **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 a powerhouse storage upgrade for professionals demanding speed, capacity, 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 Review: Good choice for value - With the ridiculous prices of memory right now this was still a good buy. It’s not huge, but def gets the job done. No issue with installing/mounting. Review: Quality SSD at a very good price - Works great and is much faster than the previous drive in my laptop computer it had a disc drive. It was a simple upgrade for a fairly cheap price. My computer boots up really fast now and I have a ton more storage. This drive is also silent unlike the old disc 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 | #68 in Internal Solid State Drives | | Brand | SP Silicon Power | | Built-In Media | 1 x Solid State Drive | | Cache Memory Installed Size | 4 TB | | Color | Black | | Compatible Devices | Laptop | | Connectivity Technology | SATA | | Customer Package Type | FFP | | Customer Reviews | 4.5 out of 5 stars 11,817 Reviews | | 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 | 4 TB | | Hardware Connectivity | SATA 6.0 Gb/s | | Installation Type | SSD | | Item Dimensions L x W x Thickness | 0.28"L x 0.28"W x 0.28"Th | | Item Weight | 1.76 ounces | | 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 | | Special Feature | Shock Resistant | | 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good choice for value *by S***S on August 31, 2026* With the ridiculous prices of memory right now this was still a good buy. It’s not huge, but def gets the job done. No issue with installing/mounting. ### ⭐⭐⭐⭐⭐ Quality SSD at a very good price *by D***Y on May 25, 2026* Works great and is much faster than the previous drive in my laptop computer it had a disc drive. It was a simple upgrade for a fairly cheap price. My computer boots up really fast now and I have a ton more storage. This drive is also silent unlike the old disc drive ### ⭐⭐⭐⭐⭐ Works as promised. Very easy to install. Comes with Free Cloning Software *by N***T on January 18, 2019* This is big bang for the buck. It works as promised. There were no issues. I had it running in 30 mins. Flawless. Pros: 1. Works as promised. 2. Comes with free Software called ECHO 3. You can download this software from SP website. The key for this is printed on a sticker on the back of the SSD device. People have used it successfully. I have no idea how it is. I used Macrium Reflect to clone. Just wanted to document here that it comes with a free software for cloning. 3. Results are fantastic. I moved from 85/63 to 510/467 MBPS ! Well most most SSDs give that. Just documenting here that it delivered advertised speed. It could give more may be, but I have a small capacity machine. 4. Look and feel is solid. It is of no value anyway. 5. Price point is excellent. I got 512GB for $57. You would get Samsung 256GB for this price as of Jan/2019. Cons: None so far. Reliability - I have to wait and watch. Other thoughts: 1. SSD Management software is available for free download. But my antivirus stopped it saying unsafe. Read on reviews that it contains TROJAN. So I would not recommend it. You can install something free like Crystal Disk Mark but it would not monitor SMART and other things. It is better to be safe than sorry. However I appreciate them offering something for this price range. 2. I had tried Samsung Data Migration and Macrium Reflect earlier on a Samsug EVO SSD 256GB. It never worked, I had to return it. This one was very easy, it was a breeze. And costs 1/2 the money you would pay for Samsung brand. I think Samsung is just brand marketing. There is nothing much. 3. I need 2TB-4TB SSDs for NAS. I would wait for sometime for prices to fall. I would recommend this product. ## 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.vn/products/530175382-4tb-ssd-3d-nand-a55-slc-cache-performance-boost-sata](https://www.desertcart.vn/products/530175382-4tb-ssd-3d-nand-a55-slc-cache-performance-boost-sata) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-09-26*