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NameIntel® Core™2 Quad Processor Q9550 (12M Cache, 2.83 GHz, 1333 MHz FSB)Intel® Core™2 Quad Processor Q9650 (12M Cache, 3.00 GHz, 1333 MHz FSB)Intel® Core™2 Quad Processor Q6600 (8M Cache, 2.40 GHz, 1066 MHz FSB)
StatusLaunchedLaunchedLaunched
Launch DateQ1'08Q3'08Q1'07
Processor NumberQ9550Q9650Q6600
# of Cores444
# of Threads444
Processor Base Frequency2.83 GHz3 GHz2.4 GHz
Cache12 MB L2 Cache12 MB L2 Cache8 MB L2 Cache
Bus/Core Ratio8.5 9.0
Bus TypeFSBFSBFSB
System Bus1333 MHz1333 MHz1066 MHz
FSB ParityYesNoNo
Instruction Set64-bit64-bit64-bit
EmbeddedNoNoNo
Supplemental SKUNoNoNo
Processing Die Lithography45 nm45 nm65 nm
Max TDP95 W95 W105 W
VID Voltage Range0.8500V - 1.3625V0.8500V - 1.3625V0.85V-1.5V
1ku Bulk Budgetary Price$266.00$316.00
Memory Specifications
Graphics Specifications
Expansion Options
I/O Specifications
Networking Specifications
Package Specifications
TCASE71.4°C71.4°C62.2°C
Package Size37.5mm x 37.5mm37.5mm x 37.5mm37.5mm x 37.5mm
Processing Die Lithography45 nm45 nm65 nm
Processing Die Size214 mm2214 mm2286 mm2
# of Processing Die Transistors820 million820 million582 million
Sockets SupportedLGA775LGA775LGA775
Halogen Free Options AvailableYesYesNo
Advanced Technologies
Intel® Turbo Boost TechnologyNoNoNo
Intel® Hyper-Threading TechnologyNoNoNo
Intel® Virtualization Technology (VT-x)YesYesYes
Intel® Trusted Execution TechnologyYesYesNo
Intel® 64YesYesYes
Idle StatesYesYesYes
Enhanced Intel® Speedstep TechnologyYesYesYes
Intel® Demand Based SwitchingNoNoNo
Thermal Monitoring TechnologiesYes Yes
Execute Disable BitYesYesYes