Template:mpu The Xeon D-1539 is a 64-bit octa-core x86-64 microserver SoC that was introduced by Intel in April of 2016. The D-1539 operates at 1.6 GHz with a turbo frequency of 2.2 GHz. This chip, which is based on the Broadwell microarchitecture and manufactured in 14 nm process, has a TDP of 35 W and can support up to 128 GB of RAM (DDR3L/DDR4).