The M1 Gigabit LAN Killer Gaming Network Interface Card's 400Mhz Network Processing Unit (NPU) that allows the Killer to completely bypass the Windows Network stack through hardware acceleration by implementing it's own interrupt driven networking model. Bypassing the Windows Network stack reduces your latency (Ping), and shortens every game frame loop, boosting your FPS. It's NPU is specifically designed with online gaming in mind, and handles gaming network traffic much more quickly and efficiently than standard networking products, including packet prioritization. All this gives you a faster and smoother online gaming experience.