Specifications, Pricing and Availability
The X210 comes in three capacity sizes, 128GB, 256GB and the 512GB model we're looking at today. SanDisk ships the X210 products with the full capacity available to the user. This allows end users to over provision the drive as needed.
SanDisk claims sequential read performance at 505 MB/s and sequential writes at 470 MB/s. The read IOPS performance claimed is 89K and 60K for 4K write IOPS. SanDisk also takes performance claims a step further and lists read and write latency.
The high performance comes from SanDisk's 19nm All Bit Line (ABL) flash with SanDisk's proprietary nCache technology. The heart of the X210 is a Marvell 88SS9187-BLD2 controller that's loaded with SanDisk programmed firmware.
Haswell based systems have new power states for the processor, chipset and SSDs attached to the system. We've talked about DEVSLP for over a year now, but the X210 is one of the early SSDs to support the feature. The 512GB X210 drops all the way down to just 15 mW of power in DEVSLP. Slumber power is only 80 mW.
We put a little time between the X210 256GB review and this X210 512GB review. When we tested the 256GB model, the lowest price we could find online was $233 for the 256GB model and $410 for the 512GB model. The prices have now settled. Using Google Shopping, we found the X210 256GB for as low as $198 and the X210 512GB is now down to $374.99.