NEMIX RAM DDR4 3200MHZ PC4-25600 SODIMM are manufactured using JEDEC standard 7-layer PCB Board built with Tier 1 chipset such as Samsung Micron or Hynix DRAM. All of our memory upgrades are backed by Lifetime Replace Warranty and ship same business day. Our NON-ECC Non-Buffered memory upgrades are guaranteed to boost your system performance. Please contact us with questions regarding your system compatibility or quantity discounts. We guarantee the most competitive, Manufacturer-Direct Memory Upgrades!