Specifications

-Essentials
Status Launched
Launch Date Q3'08
Processor Number Q9400
# of Cores 4
Clock Speed 2.66 GHz
L2 Cache 6 MB
FSB Speed 1333 MHz
FSB Parity No
Instruction Set 64-bit
Embedded Options Available Yes
Lithography 45 nm
Max TDP 95 W
VID Voltage Range 0.8500V-1.3625V

Datasheet Link
-Package Specifications
TCASE 71.4°C
Package Size 37.5mm x 37.5mm
Processing Die Size 164 mm2
# of Processing Die Transistors 456 million
Sockets Supported LGA775
Low Halogen Options Available See MDDS
-Advanced Technologies
Intel® Turbo Boost Technology ‡ No
Intel® Hyper-Threading Technology ‡ No
Intel® Virtualization Technology (VT-x) ‡ Yes
Intel® Virtualization Technology for Directed I/O (VT-d) ‡ Yes
Intel® 64 ‡ Yes
Idle States Yes
Enhanced Intel SpeedStep® Technology Yes
Intel® Demand Based Switching No
Thermal Monitoring Technologies Yes
-Intel® Data Protection Technology
AES New Instructions No
-Intel® Platform Protection Technology
Trusted Execution Technology ‡ Yes
Execute Disable Bit ‡ Yes