Core 2 Extreme QX9650 vs Core 2 Quad Q9550

Primary details

Comparing Core 2 Quad (Desktop) Q9550 and Core 2 Extreme QX9650 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2170not rated
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
SeriesCore 2 Quad (Desktop)no data
Power efficiency1.46no data
Architecture codenameYorkfield (2007−2009)Yorkfield (2007−2009)
Release dateno dataNovember 2007 (17 years ago)

Detailed specifications

Core 2 Quad (Desktop) Q9550 and Core 2 Extreme QX9650 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores4 (Quad-Core)4 (Quad-Core)
Threads44
Base clock speedno data3 GHz
Boost clock speed2.83 GHz3 GHz
Bus rate1333 MHz1333 MHz
L1 cache64K (per core)64K (per core)
L2 cache12288 KB12 MB (shared)
L3 cache0 KB0 KB
Chip lithography45 nm45 nm
Die size2x 107 mm22x 107 mm2
Maximum case temperature (TCase)71 °C64 °C
Number of transistors820 million820 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier-+
VID voltage rangeno data0.85V-1.3625V

Compatibility

Information on Core 2 Quad (Desktop) Q9550 and Core 2 Extreme QX9650 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11
SocketLGA775LGA775
Power consumption (TDP)95 Watt130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad (Desktop) Q9550 and Core 2 Extreme QX9650. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)++
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data-
Idle Statesno data+
Thermal Monitoring-+
Demand Based Switchingno data-
FSB parityno data+

Security technologies

Core 2 Quad (Desktop) Q9550 and Core 2 Extreme QX9650 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad (Desktop) Q9550 and Core 2 Extreme QX9650 are enumerated here.

VT-xno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad (Desktop) Q9550 and Core 2 Extreme QX9650. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1,DDR2,DDR3DDR1, DDR2, DDR3

Pros & cons summary


Power consumption (TDP) 95 Watt 130 Watt

Core 2 Quad Q9550 has 36.8% lower power consumption.

We couldn't decide between Core 2 Quad Q9550 and Core 2 Extreme QX9650. We've got no test results to judge.


Should you still have questions on choice between Core 2 Quad Q9550 and Core 2 Extreme QX9650, ask them in Comments section, and we shall answer.

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Intel Core 2 Quad Q9550
Core 2 Quad Q9550
Intel Core 2 Extreme QX9650
Core 2 Extreme QX9650

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Community ratings

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4.1 1877 votes

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4.1 124 votes

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