The Core 2 Duo processor was developed to meet the insatiable demand for increased performance from PC users running multiple intense software applications simultaneously. In the office, PC usage has changed from data entry and word processing to e-commerce, online collaboration, and an ever-increasing need for continual security and virus protection. In the home, interests have shifted from low-bandwidth photos and Internet surfing to downloading and viewing high-definition videos, as well as advanced photo and video editing.Intel's 45nm manufacturing technology, with hafnium-infused Hi-k transistors, enables even more processor performance by doubling the transistor density, improving efficiency and speed relative to the previous generation, and increasing cache size by up to 50 percent. The Core 2 Duo processor delivers more performance without using more energy.Built on the innovative Intel Core micro architecture, the Core 2 Duo desktop processor delivers revolutionary dual-core performance and breakthrough processor energy efficiency. Additional features, which support enhanced security, virtualization, and 64-bit computing, make the Core 2 Duo the most impressive processor developed for an increasingly multimedia-centered, high-definition world.