Core2Duo E8400

Intel® Core™2 Duo Desktop Processor E8400
Supported Features:
Dual Core
Enhanced Intel Speedstep® Technology
Intel® EM64T 1
Intel® Virtualization Technology
Enhanced Halt State (C1E)
Execute Disable Bit 2
Intel® Thermal Monitor 2

Processor Specifications:
Package Type: LGA775
Manufacturing Technology: 45 nm
Core Stepping: C0
CPUID String: 10676h
Thermal Design Power: 65W
Thermal Specification: 72.4°C
VID Voltage Range: 0.85V – 1.3625V

sSpec Number: SLAPL
CPU Speed: 3 GHz
PCG: 06
Bus Speed: 1333MHz
Bus/Core Ratio: 9
L2 Cache Size: 6 MB
L2 Cache Speed: 3GHz

Intel's Core 2 Duo E8400 processor is physically similar to the Core 2 Duo E6750 (Conroe) and Socket 775 Pentium D processors that came before it. All of these processors use the Land Grid Array 775-pad package. Intel's move to a 45 nanometer manufacturing process means the silicon die here is approximately 104mm2 in area and contains around 410 million transistors. While the Core 2 Duo E8400 is a Socket 775 CPU, it isn't compatible with all Socket 775 motherboards, due to different voltage requirements and processor power envelopes.

Currently the Intel X48, X38, P45, P35, G35, G33 and G31 chipsets have native support for 45nm 'Wolfdale' processors and will support the 1333MHz Front Side Bus speed. Motherboards with older chipsets may support Wolfdale processors like the E8400 processor though BIOS updates, although compatibility isn't universal.