The RAM-16GDR3EC-RD-1600 MHz RDIMM Memory Module from QNAP has a clock speed of 1600 MHz (PC3-12800), a 240-pin DIMM form factor, and uses 1.5V. This memory may be used to upgrade the RAM in the ES1640DC, which is equipped with dual controllers. Each controller has access to three memory slots, which is broken down into two slots for the main system memory and one slot for the write cache. Each slot supports a maximum of 16GB, so each controller supports 32GB of main memory, or 64GB total, as well as 16GB of write cache per controller, or 32GB total. All in all, the ES1640dc can utilize six of these chips for a maximum memory amount of 96GB.
In The Box
QNAP 16GB DDR3 1600 MHz RDIMM Memory Module
Storage: 16 GB (1 x 16 GB)
Special Feature: The RAM-16GDR3EC-RD-1600 MHz RDIMM Memory Module from QNAP is designed for their ES1640DC 16-Bay NAS Enclosure.
Capacity: 16 GB (1 x 16 GB)
Speed: 1600 MHz (PC3-12800)
Form Factor: 240-pin DIMM
Voltage: 1.5 V
QNAP ES1640dc 16-Bay NAS Enclosure