The Intel Core 2 Duo E6400 was a desktop processor with 2 cores, launched in July 2006, at an MSRP of $183. It is part of the Core 2 Duo lineup, using the Conroe architecture with Socket 775. Core 2 Duo E6400 has 2 MB of L2 cache and operates at 2.133 GHz. Intel is making the Core 2 Duo E6400 on a 65 nm production node using 291 million transistors. The multiplier is locked on Core 2 Duo E6400, which limits its overclocking potential.
With a TDP of 65 W, the Core 2 Duo E6400 consumes typical power levels for a modern PC. Intel's processor supports DDR1, DDR2 and DDR3 memory with a dual-channel interface. For communication with other components in the computer, Core 2 Duo E6400 uses a PCI-Express Gen 2 connection. Although the processor doesn't come with integrated graphics, certain motherboards with compatible chipsets can provide this capability.
The SSE4 instruction set is not supported, which can cause problems with modern games, as they require that capability.