Internal memory can be expanded from 2GB to 6GB
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Internal memory can be expanded from 2GB to 6GB

The device comes with 2GB of DDR3L memory but that can be expanded to 6GB reasonably cheaply if you need it, taking the total RAM well beyond that of the DS419Slim’s 512MB limit. The system’s read speed is ‘over’ 220 MB/sec, which is the same as that of the DS419Slim, but at 190 MB/sec it writes faster than the smaller unit’s 94 MB/sec. By comparison the larger/higher-end Disk Station units, such as the new $740 6-bay DS1618+, can read at 2,090 MB/sec, write at 620 MB/sec, and comes with 4GB of DDR4 RAM that can be expanded to 32GB.

The DS620Slim uses an Intel Celeron J3355 dual-core 2.0 GHz processor with burst speeds of up to 2.5 GHz, which supports dual-channel H.265/H.264 4K video transcoding on the fly.