Intel Q9400 CPU 2.66 GHz LGA 775 Socket 4 Cores Desktop Processor  (Silver)

Intel Core 2 Quad Q9400 specifications The specs can be used for short-term listings on auction and classifieds sites General information Type CPU / Microprocessor Market segment Desktop Family Intel Core 2 Quad Model number ? Q9400 CPU part numbers AT80580PJ0676M is an OEM/tray microprocessor BX80580Q9400 is a boxed processor with fan and heatsink (English version) BXC80580Q9400 is a boxed processor with fan and heatsink (Chinese version) Frequency ? 2667 MHz Bus speed ? 1333 MHz Clock multiplier ? 8 Package 775-land Flip-Chip Land Grid Array (FC-LGA8) 1.48" x 1.48" (3.75 cm x 3.75 cm) Socket Socket 775 Introduction date Aug 10, 2008 Price at introduction $266 S-spec numbers Part number ES/QS processors Production processors QHHU SLB6B AT80580PJ0676M + + BX80580Q9400 + BXC80580Q9400 + Architecture / Microarchitecture Microarchitecture Core Processor core ? Yorkfield Core stepping ? R0 (QHHU, SLB6B) CPUID 1067A (QHHU, SLB6B) Manufacturing process 0.045 micron 456 million transistors Die 164mm2 Data width 64 bit The number of CPU cores 4 The number of threads 4 Floating Point Unit Integrated Level 1 cache size ? 4 x 32 KB 8-way set associative instruction caches 4 x 32 KB 8-way set associative data caches Level 2 cache size ? 2 x 3 MB 12-way set associative caches (each L2 cache is shared between 2 cores) Multiprocessing Uniprocessor Features MMX instructions SSE / Streaming SIMD Extensions SSE2 / Streaming SIMD Extensions 2 SSE3 / Streaming SIMD Extensions 3 SSSE3 / Supplemental Streaming SIMD Extensions 3 EM64T / Extended Memory 64 technology / Intel 64 ? NX / XD / Execute disable bit ? SSE4.1 / Streaming SIMD Extensions 4.1 ? VT-x / Virtualization technology ? VT-d / Virtualization for directed I/O TXT / Trusted Execution technology Low power features Enhanced SpeedStep technology ? Stop Grant state ? Halt state Extended Halt state Extended Stop Grant State Sleep state ? Deep Sleep state ? Deeper Sleep state ? Integrated peripherals / components Integrated graphics None Electrical / Thermal parameters V core ? 0.85V - 1.3625V Minimum/Maximum operating temperature ? 5°C - 71.4°C Minimum/Maximum power dissipation ? 12 Watt (TDP in extended HALT state) / 132.48 Watt Thermal Design Power ? 95 Watt