More power-efficient performance. Higher performance usually consumes more power. But, 990 PRO uses less power with over 50% improved performance per Watt over 980 PRO. This low-power design makes max PCIe® 4.0 performance possible with optimal power efficiency.
* 980 PRO Sequential Read/Write – 1,129/877 MB/Watt, 990 PRO Sequential Read/Write – 1380/1319 MB/Watt based on internal test result of 1TB capacity model.