DDR4-2666 SO-DIMM (JetRam)JetRam memory modules are manufactured with true E TT grade, name DRAM chips that have passed strict screening process and rigorous environmental testingThe modules provide excellent compatibility and fully-checked reliability, which is fit for PC upgradeEach memory module is rated in 2666MHz to greatly increase data transmission efficiency by higher bandwidth of up to 21GB/s. Operated at a nominal voltage of just 1.2V, DDR4 SO-DIMM JetRam memory ensures that both operatingTemperature and electrical load on the memory controller can be reduced to save up to 40% of energy compared to standard DDR3 modules giving 1.5V