PMC company on its official website posted a press release advising that the published SSD-drive is combining both operational DRAM-, and NAND-memory.
As you can see, the drive is physically made in the format of expansion cards, with the solution consists of two boards: the main is located on the entire power rail, chip DRAM and the controller itself, and on an additional board mounted chip flash memory. Controller, the underlying device works on a new protocol NVM Express, allows the installation of 4, 8 or 16 GB of DDR3 and DDR4, offers 16-minute and 32-channel access to the NAND-memory interface and is equipped with a PCI-E 3.0 x8. Combining the two types of memory can achieve a very high level of performance (PMC claims 10 million IOPS random write operations on 4 KB blocks and one million IOPS for random read 4KB blocks), and guaranteed data integrity (in case of power failure, all data transferred of the DRAM chips in the nonvolatile flash memory).
From an ideological point of view, the solution is not new: attempts to use memory to build ultra-fast drives have taken place before, it suffices to recall, for example, drives DDRdrive x1 interface PCI-E x1, presented in 2006, the year which also used a combination of DRAM chips and flash memory.
The famous Gigabyte I-RAM , which was based only on memory, with a system of communicating through the interface SATA, taking with connector PCI.
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