SP 1TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5 7mm (0.28) Internal Solid State Drive (SP001TBSS3A55S25)

(213 Reviews)

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$21.58

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(30000 available )

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100 Ratings
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  • Nathan

    > 3 day

    Good storage

  • Ken.S

    05-06-2025

    I bought this drive around Christmas time at $90 and thought that was an insanely good deal, now I see its $2 less than when I bought it. I have bought a few SP SSDs and they never disappoint. I bought this drive to replace the internal drive in my laptop but I dont need it for that anymore so I ended up getting an external case for it and Im using it as external storage to back up data from a few different devices in my home. Ive never had any issues with any of my SP drives, including this 1. I will continue to buy more as my storage needs require.

  • Galileo

    > 3 day

    Just got and tested it with CrystalDiskMark8 using an external $10 USB3.0 adapter. Testing again after installing internally in a late 2015 iMAC and after writing over 3TBs to it during several cloning/installation procedures. So far so good.

  • R. Lam

    > 3 day

    Use this Silicon Power SSD as a NAS back up drive even though I know it it not designed for NAS storage. But with the price this low I prefer the Silicon Power SSD over a mechanical drive. Anyway, the Silicon Power SSD and the NAS has been on 24 7 non stop for three months straight and the SSD has been working fine and there is 99% life remaining as it is shown on the drive analysis after three months of non stop usage. Overall good SSD, recommended.

  • Superfuzz

    > 3 day

    UPDATE: 6/7/2023 =============== I just received my RMA replacements for the 3 drives drive below - this new batch 23015096 has some changes again, shouldnt be a surprise by now... Firmware: H220916a Size: 2.05TB/1.86TiB DRAT/DZAT *is* supported Case is now made of metal instead of plastic Quality remains to be seen and given the extreme variance within the product line my prior review still stands. A potentially OK replacement does not make up for the inability to provide a good product the first time - data is too valuable to risk to random drives. UPDATE: 5/17/2023 ================ I now have 3 more failed drives - all have serial numbers starting with YTAK from batches 23000184 and 23003845. These 3 latest failures powered down during a reboot and then refused to power back on at all. No system recognized them now. For those keeping score, I now only have 3 of these drive left alive, their serials start with AA (2TB, Firmware V0303B0), BB (2.05TB, Firmware SHFM60.0), and BC (2.05TB, Firmware SHFM60.0). Drives BB and BC are from the same batch. The AA drive is the first drive in this line I purchased end of October 2022. The BB/BC drives are from March and April 2023 respectively. The failed three (YTAK drives) are from December 2022 and February 2023. All drives were purchased exclusively from the Silicon Power merchant here on Amazon. The A55 2TB drive line is a complete disaster - do not trust your data to these drives. Regrettably these latest failed drives are under warranty but not within the Amazon return window so I am stuck with a RMA drives which will result in A55 replacements that cant be trusted... Too bad I have to give at least 1 star for a review - this product doesnt deserve even 1 star... UPDATE: 5/8/2023 =============== Verified that batch 23011662 with firmware HPS2704M is bad. All drives in this batch fail with the same errors when subjected around 5 hours of continuous writes. Since there is no way to determine which drive belongs to which batch when ordering (or even if any future batch will resolve this) the product is no longer able to function as intended - it corrupts data when writing. They were nice while they lasted but I cant rely on drives that change their internal hardware so frequently and then with relatively high probability of producing faulty devices as a result. I may consider them again at some future point but at this point I cant trust these drives to store my data. Rating is formally reduced to the minimum (1 star) as such a volatile produce design is unacceptable. If you get a good drive it will be fine but drive roulette is not game to be played. UPDATE: 5/7/2023 =============== Formally reducing review by 1 star (now 3 stars) because of the new 23011662 batch with firmware HPS2704M drives. The drive in my prior review was of this batch and so was its replacement. Both drives show ATA errors already (this new one as soon as I plugged it in) and neither drive supports SMART self-tests (prior batches/firmware did - as do ALL other SATA drives Ive ever used). SP tools do not (yet) recognize these drives so they cant run tests on them nor is there any new firmware to update to. The ATA error appears to be some sort of bug in the firmware that may not necessarily affect drive functionality so in a slightly risky move I am attempting to resilver onto this new replacement - time will tell if it suffers the same fate as the one it replaced. I also have another unopened drive of this same batch. I will be waiting a little before opening and testing it, pending the results I see here. This represents a significant reduction in quality control and makes me question further purchases. For now I am considering this a batch specific issue but if this continues I may need to review my star rating and find a new drive manufacturer. UPDATE: 5/1/2023 =============== I have purchased 8 of these drives so far for use in my ZFS pool. Overall I am pleased, especially for the price - they are replacing mechanical drives of comparable specs and as expected greatly outperform the spinning array. Quality control seem to be an issue though - of the 8 drives (technically 9 drives) two have now been defective shortly after arrival. As in showing I/O errors within 10hr of operations. This latest entry had a firmware version of HPS2704M and had ATA errors starting around 4hr resilvering mark (heavy write operations). It also refused to run SMART self tests - a bit odd since it does report SMART data... I might just have bad luck but we shall see as I have more drives to replace. 2 of 9 being faulty isnt good odds from my personal experience. The drives that work are working fine - no issues there so it seems that so far either they die quickly or work fine. Other interesting bits of information that might be useful to some - I run raidz2 with 8 drives per vdev. This last drive would have been the final replacement to an all flash vdev. I was getting sustained resilver speeds of around 350MB/s for several hours (i.e. up until failure). Back when the vdev was more spinning than flash I was getting speeds around 200MB/s for resilvering to flash and about 70MB/s resilvering to SMR 5400RPM drives - so overall a decent sustained performance despite being DRAMless. UPDATE: 2/6/2023 =============== The drive with firmware SN12429 (2.05TB) had write errors, only detectable via dmesg and ZFS error counts (SMART, badblocks, self-test, etc. all said everything was fine). Drive had to be RMAed. RMA process was quick and easy. Replacement drive has been received but is using firmware V1031C0 (2.00TB) which lacks DRAT/DZAT (not a big deal, just leaves me a little confused as to which firmware and feature set is supposed to be current and further proves the hardware variance despite using identical models and external appearance). (No firmware updates are available as per their firmware tool.) UPDATE: 1/6/2023 =============== Since for my use cases the limitations from my original review are acceptable I purchased another of these drives just a couple months later and I am surprised (in a good way) to report that the latest drive I received has a different firmware (possibly controller and/or NAND chips - not going to disassemble to verify). This new drive has firmware SN12429 and is 2.05 TB (1.86TiB) so slightly larger than the older drive. This new drive also DOES support DRAT/DZAT. Trim appears to function on my LSI 9211-8i (IT mode) under ZFS (2.1.4) with this drive. Other than those difference the drive appears to be otherwise identical to the older one. Hopefully this change remains in future drives, if so this is a decent drive for RAID/ZFS home use. Star rating remains unchanged as there is no way to know which version of the drive you have until you plug it in. Original Review (11/1/2022, Still Valid) ======================= Does what it should for the most part. It does slow down once you fill the SLC cache (as expected). Plastic casing (common for lower end SSDs) gives it a cheap and non-durable feel. This shouldnt matter too much unless you are doing a lot of hot swapping of the drive. GParted reports 1.82TiB usable space, the same as the 2TB HDD it replaced (so storage is a true 2TB not 1.92TB like some other 2TB models - this matters when replacing drives in arrays). Does not support DRAT/DZAT (Deterministic Read ZEROs After TRIM) - meaning no TRIM when connected to an LSI/Broadcom HBA. So while SP claims TRIM/RAID support it wont fully operate in all cases. Unfortunately the LSI/Broadcom HBAs are quite common and popular. Firmware V0303B0

  • Mint

    Greater than one week

    I have been using an SSP solid-state drive (SSD) for a few months now, and I am very impressed with its performance. I recommend SSP solid-state drives (SSDs) to anyone who wants to upgrade their computer and enjoy a smoother and faster user experience.

  • Uncle Sam

    > 3 day

    Using it for months now. No problem at all. Great item.

  • Ryan

    01-06-2025

    Its an SSD. Not a particularly fast one because of its sata interface, but I needed it for modding an Xbox 360. Does speed really matter? Probably not, and the things been working fine, so 5 stars it is. One thing though, if youre modding a phat xbox 360, then youll need some sort of space to make it work in the hard drive enclosure.

  • Justin TheCthulhu

    > 3 day

    So I bought this to replace an spinning disk drive in my gaming laptop. (Im still not sure why companies even bother putting spinning disks in gaming laptops anymore its such a performance limiter and provides unnecessary heat) I bought the 2 TB model and so far its been great. The performance is just not even remotely close its so much better for my larger games like Ark, Conan, Red Dead. Now there is a downside. Once you get through the Cache on the device the write does slow down a ways. Its not terrible but as others have noticed it happens. Still better than a spinning disk though so that is a bonus. Still overall very happy with the price verse size of the drive I can finally bring my gaming laptop wherever I go and not have to much of a performance hit compared to my desktop.

  • Orozco Lopez Victor Leonel

    > 3 day

    I bought this as a replacement for a 1TB mechanical drive I had on my DIY NAS. So far so good. No problems with BTRFS and it remains powered 24/7.

3D NAND Technology for Enhanced Reliability and Power Efficiency

Applying the advanced 3D NAND flash, Ace A55 features higher reliability and better power efficiency than traditional SSDs equipped with 2D NAND flash. The A55 offers improved endurance and longer battery life that you"re able to work longer without frequently recharge your laptop.

High Transfer Speeds for Fast Start Up

Powered by high quality controller and original synchronous NAND flash, the 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.

Silicon Power - A55 SSDSilicon Power - A55 SSD
Silicon Power -  3D Nand FlashSilicon Power -  3D Nand Flash
Silicon Power - SSD A55 MultitaskingSilicon Power - SSD A55 Multitasking
Silicon Power - Multiple Techniques SupportedSilicon Power - Multiple Techniques Supported
External Hard Drive Armor A60 SP - SODIMM XPower Turbine XPower RGB Turbine
Armor A60 Rugged Portable External Hard Drive Low Voltage and Power Saving DDR3L Unbuffered SODIMM XPOWER Turbine DDR4 Gaming Memory Module XPOWER Turbine RGB DDR4 Gaming Memory Module
Product Type Portable External Hard Drive Memory Module Gaming Memory Module Gaming Memory Module
Interface USB 3.0 DDR3L SODIMM DDR4 UDIMM without ECC DDR4 UDIMM without ECC
Capacity 1TB-5TB 4GB-16GB 8GB, 16GB Dual Channel Kit - 16GB (8GB*2), 32GB (16GB*2) 8GB, 16GB Dual Channel Kit - 16GB (8GB*2), 32GB (16GB*2)
Dimension(inch) 5.45 x 3.38 x 0.91 inches 6.6 x 2.4 x 0.4 inches 6.5 x 2.4 x 0.4 inches 6.5 x 2.4 x 0.4 inches
Highlights Military-grade Shockproof & Water-resistant, Cable-carry Design, Anti-slip, Anti-scratch 100% tested for stability, durability and compatibility. Original and high quality memory module. Made of selected original memory modules and is 100% factory-tested to High Stability, Durability, and Compatibility Authentic and high-quality SP memory module. Dynamic thermal heatsink mechanism to prevent overheating

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