In general, the process of developing a new generation of SandForce controllers is so long, that even the SF-oriented companies like Kingston and ADATA began to look towards other platforms.
As we can see, SandForce expect to release three controllers family SF35 **: SF3514 interface SATA3 (AHCI) for the primary and secondary levels, SF3504 interface PCI-Express 2.0 x2 (NVMe) for midrange systems, the latter is aimed at a segment SF3524 enthusiasts able to work with SATA3 (AHCI), and a PCI-Express (NVMe).
With high probability, we have one and the same controller, just with different units involved and working on different frequencies. It is noteworthy that even the most advanced version has only PCI-E 2.0 x2, that looks a bit awkward, given the existence of Samsung UBX and Marvell 88SS9293 . SF3500, is coming out already inferior to its potential rivals ...
Interesting novelties: controllers SF35 ** DRAM chip , which will act as a buffer memory - SF previous generations worked without it.
At the last exhibition Computex 2015, developers have demonstrated the engineering sample storage in the form factor M.2 NGFF interface SATA3: SF-3500 (apparently SF3514) in combination with a buffer memory volume DDR3 256 MB and 15-nm MLC ToggleNAND Toshiba.
Other characteristics are identical: only 4 channels , given the volume limit of 1 terabyte gives 16-fold alternation (using 128 GB crystals NAND), support TLC / MLC and 3D V-NAND, produced by process technology 1* nm with interfaces ONFi 2.0 / 3.0 and Toggle 1.0 / 2.0. Related Products :
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