MSI Message Signaled Interrupts mode is a Windows feature designed as a way for hardware devices like your graphics card or GPU, if youre a purist to grab the attention of and communicate with your CPU. Introduced in the PCIe 2.2 specification and then baked into Windows Vista, it a specialized setting that modders and tweakers all too often talk recklessly about as if it some hidden performance unlock. While, yes, it true that switching MSI on can genuinely trim latency on older cards that use...
