What people usually mean when searching for "CPU drivers" are the for the motherboard that the CPU is installed into. Step 1: Identify Your Motherboard (Not the CPU) Drivers depend entirely on your motherboard's brand and chipset (e.g., Intel P35, G41, Nvidia 780i). To find this:
The Intel Core 2 Duo E8400 is a CPU (Central Processing Unit). CPUs themselves do not require separate drivers to function. The operating system (Windows, Linux, etc.) handles the CPU automatically. You cannot "download a driver" for the processor alone. Intel Core 2 Duo E8400 Drivers Free Download
There is no "Intel Core 2 Duo E8400 driver" file. Focus on your motherboard’s chipset driver instead. If everything works (network, sound, display), you already have the right drivers. What people usually mean when searching for "CPU