March of Progress - The 10 GbE Changeover
While under development, the X540 was known as Twinville, and it was Intel’s fourth 10 GbE design. The first card (far left) used the Intel 82598 MAC and a third-party PHY. With two chips and a larger fab process, the card consumed about 25W—the maximum allowable from a PCI Express card—and required a fan on the heatsink. After four years, a shrink from 65 nm to 40 nm, and the addition of another port, what would become the X540-T2 consumed half as much energy and was able to shed the fan.