SP 512GB SSD 3D NAND A55 review


Does SP 512GB SSD 3D NAND A55 have SLC cache? Its 7mm slim design is suitable for Ultrabooks and Ultra-slim notebooks. Its remarkable transfer speeds that enable faster bootup and improved overall system performance. It comes with advanced SLC Cache Technology. Even more, it supports TRIM command, Garbage Collection technology, RAID, and ECC. Find details in SP 512GB SSD 3D NAND A55 review.

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Pros & Cons


  • Form factor is great for ultrabooks
  • Heatsink
  • Free performance software
  • Strong sustained write speeds
  • SLC cache recovers quickly
  • 5-year warranty and Samsung beating endurance


  • Looks and feels cheap
  • Performance not consistent

Specs – SP 512GB SSD 3D NAND A55

  • Capacity64GB, 128GB, 256GB, 512GB, 1TB, 2TB
  • Interface SATA III
  • Dimensions100.0 x 69.9 x 7.0mm
  • Vibration Resistance Test 20G
  • Shock Resistance Test1500G Max
  • Weight 63g (max.)
  • Performance Write(max.)ATTO: up to 530MB/s
  • Performance Read(max.)ATTO: up to 560MB/s
  • CDM: up to 500MB/s
  • CDM: up to 450MB/s
  • Operation Voltage5V
  • MTBF (est)1,500,000 hours
  • Adopts 3D NAND flash and “SLC Cache technology” to improve overall performance
  • 15 x faster than a standard 5400 HDD with SATA III 6Gb/s interface
  • NCQ and RAID ready
  • ECC technology to guarantee reliable data transmission
  • S.M.A.R.T. monitoring system

Compare SP 512GB SSD 3D NAND A55

Capacity (User / Raw)512GB / 512GB1024GB / 1024GB2048GB / 2048GB
Form FactorM.2 2280M.2 2280M.2 2280
Interface / ProtocolPCIe 3.0 x4 / NVMe 1.3PCIe 3.0 x4 / NVMe 1.3PCIe 3.0 x4 / NVMe 1.3
ControllerPhison PS5012-E12SPhison PS5012-E12SPhison PS5012-E12S
MemoryBiCS4 96L TLCBiCS4 96L TLCBiCS4 96L TLC
Sequential Read3,400 MBps3,400 MBps3,400 MBps
Sequential Write2,300 MBps3,000 MBps3,000 MBps
Random Read290,000 IOPS390,000 IOPS500,000 IOPS
Random Write510,000 IOPS450,000 IOPS600,000 IOPS
Endurance (TBW)400 TB800 TB1,600 TB

SP 512GB SSD 3D NAND A55 review


The Silicon Power SSD has a standard 2.5” design with 100.0 x 69.9 x 7.0mm dimensions. The Silicon Power A55 SSD features a metal shell casing with the relevant details printed on it like the serial number, logo, and storage capacity. It uses a SATA 3.0 interface for data transfer and uses the standard M3 screw holes.


Phison’s PS5012-E12S PCIe 3.0 x4 NVMe SSD controller is a quad-core, NVMe 1.3-compliant design that leverages two Arm Cortex R5 CPUs clocked at 666 MHz alongside lower-clocked dual co-processors. Phison’s third-generation Low-Density Parity-Check (LDPC) ECC, a RAID engine, and end-to-end data path protection ensures reliability and consistency. The drive supports S.M.A.R.T. data reporting and Trim, but it doesn’t support AES 256-bit hardware encryption.

Read and write speed

The Silicon Power A55 SSD has read speeds that are on par with its contemporaries, like the Samsung 860 EVO, however, its write speeds are much slower—sometimes as much as 20%. For example, the ADATA SU800 has write speeds of 520MB/s; the Ace A55 has peak write speeds of 450MB/s, which is about 13% below the SU800. That isn’t terrible, but its write speed would often drop to 370MB/s, which is about a 30% drop in performance compared to the SU800’s write speeds.

Transfer rate

The file transfer test shows a pretty good result for the Silicon Power A55 512GB with it beating the MydigitalSSD by about 15% and the Patriot Burst 480GB trails all the way in the back with 141MB/s. It keeps up a decent pace with the performance king we had earlier this month the Crucial MX500.


Silicon Power provides a very basic SSD Toolbox. With it, you can monitor the capacity used, the total bytes written to the drive, and temperature as reported by the SSD’s S.M.A.R.T. data. It also has a built-in diagnostic scanner. 

SP 512GB SSD 3D NAND A55 Customer review

Great bang for the buck

I purchased a Dell laptop for my wife and had the choice of a 256GB SSD or a 1TB hard drive and figured the extra storage was the way to go. That was a mistake. Right out of the box the HDD was constantly pegged at 100% constantly. Her user experience was not great to say the least. Two things solved her problem. The first was getting this SSD, the second was installing bare Windows 10 on it, without all the Dell bloatware. It used to take several minutes before the system was useable after boot, now it is about 20 seconds after turning the system on. I purchased a 256GB Silicon Power Ace SSD a while back to make an old dual core Celeron useable (which it did quite well), and now this SSD makes a Ryzen 5 laptop actually run like a Ryzen 5. I wouldn’t hesitate to recommend this drive to anyone.

By Winman99  at Best Buy

Alternate of SP 512GB SSD 3D NAND A55

Crucial P5 Plus

  • Capacity: 250GB, 500GB, 1TB, 2TB
  • Controller: Crucial PCIe 4.0 Gen
  • Memory: Micron 176-layer TLC flash
  • Interface: M.2 PCIe 4.0 x4
  • Seq. read: 6,600MB/s
  • Seq. write: 5,000MB/s

+In-house eight-channel PCIe 4.0 controller

+Micron’s latest 176-layer TLC NAND memory

+Five-year warranty


-Runs a tad toasty

-Mediocre 4K random access performance

Crucial is one of the big names in affordable solid state storage, but has been notably slow at getting us a new PCIe 4.0 SSD. It’s been worth the wait, however, as the new P5 Plus is a fantastic entry-level Gen4 SSD. It may not have the peak speeds of the WD or Sabrent competition, but it can make a big splash in terms of those all-important price/performance metrics.

Since the first Gen4 SSDs launched there has been a quite significant price premium as a barrier to entry, and with the P5 Plus that has come down a hell of a lot. Using parent company, Micron’s latest NAND flash memory, and it’s own in-house controller, Crucial has been able to keep costs down and performance up. 

And, also importantly, it can easily outperform any PCIe 3.0 drive you can to mention, and for practically the same price. Even if you’re not running a motherboard with a PCIe 4.0 interface this will still work in an older PCIe 3.0 setup, and at the limits of that connection.

In the rarefied air of PCIe 4.0 speeds it’s maybe a little lacklustre in peak and random performance, but it’s rocking TLC memory, not QLC, is still pretty damned quick compared to older drives, and is fantastically affordable.

Editor’s recommendations

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