We've already published two reviews from ADATA's new SP920 series. The largest 1TB model and the smallest 128GB are already online, but we wanted to put some distance between those reviews and the two middle capacity size reviews. This allowed us to update our thoughts on the product line, see real-world pricing, and overall market availability.
It's hardly a secret now that ADATA tapped Micron / Crucial for the SP920. The 512GB and 1TB models are the same as the Crucial M550 with 128Gb die flash. The M550 128GB and 256GB use 64Gb die, while the SP920 use 128Gb die, a lower cost but lower performance alternative when used in smaller capacity SSDs.
Since the initial release, the ADATA SP920 512GB model has gone missing from e-tail websites. I can't say for certain if the 512GB model ever made it to market, but I thought we saw all four capacity sizes listed at Amazon. At the time of writing this article, we couldn't find a single SP20 512GB for sale anywhere.
Specifications, Pricing and Availability
ADATA released the SP920 in four capacity sizes: 128GB to 1TB. We've given the SP920 mixed results in our reviews since ADATA chose to use 128Gb die size flash for the entire line up. The 128Gb die works great in larger capacity sizes like 1TB and 512GB, but the capacity per die is too high for smaller capacity size drives. SSDs read and write the data to more than one NAND flash die at a time, so the more you can read and write to, the faster the task occurs. The 512GB model we're testing today uses two die per package and has sixteen packages. This allows the eight-channel Marvell 88SS9189-BLD2 controller to read and write to more die at the same time.
ADATA claims sequential read performance at 560 MB/s, sequential write performance at 500 MB/s, 4k random reads at 98,000, and 4k random writes at 88,000. The specification sheet doesn't list endurance, but the SP920 does have a three-year warranty.
When it comes to the accessory package, the SP920 does much better than the M550. In the retail package, we found a desktop adapter bracket, 7mm to 9.5mm z-height bracket, mounting screws, and product manual. Also included was a code for Acronis ATI HD 2013, a disk migration software that allows you to clone the data on your existing drive to your new SP920. ADATA now has an SSD Toolbox that allows you to perform various management and disk clean up tasks.
As we mentioned, we couldn't find the SP920 512GB for sale online, but ADATA tells us this capacity size has a MSRP of $334.99. Newegg does have the 128GB ($89.99) and 256GB ($149.99) models for sale at this time, and so does Amazon.
PRICING: You can find the ADATA SP920 (256GB) for sale below. The prices listed are valid at the time of writing but can change at any time. Click the link to see the very latest pricing for the best deal.
United States: The ADATA SP920 (256GB) retails for $159.99 at Amazon.