Intel Pentium 4 660 vs Core 2 Quad Q9550

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General info

Comparing Core 2 Quad Q9550 and Pentium 4 660 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking2003not rated
Place by popularitynot in top-100not in top-100
Value for money2.80no data
Market segmentDesktop processorDesktop processor
SeriesCore 2 Quad (Desktop)Pentium 4
Architecture codenameYorkfield (2007−2009)Prescott 2M
Release dateno datano data
Current price$54 $97
Value for money

Performance per price, higher is better.

no data

Technical specs

Core 2 Quad Q9550 and Pentium 4 660 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)1 (Single-Core)
Threads41
Base clock speedno data3.6 GHz
Boost clock speed2.83 GHz3.6 GHz
Bus support1333 MHz800 MHz
L2 cache12288 KBno data
L3 cacheno data2 MB L2 Cache
Chip lithography45 nm90 nm
Maximum core temperatureno data71 °C
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo
VID voltage rangeno data1.2V-1.4V

Compatibility

Information on Core 2 Quad Q9550 and Pentium 4 660 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.

SocketLGA775PLGA775,PPGA775
Power consumption (TDP)95 Watt115 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9550 and Pentium 4 660. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data+
Idle Statesno data+
Thermal Monitoringno data+
Demand Based Switchingno data-
FSB parityno data-
Statusno dataDiscontinued

Security technologies

Core 2 Quad Q9550 and Pentium 4 660 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 Q9550 and Pentium 4 660 are enumerated here.

VT-xno data-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9550 and Pentium 4 660. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1,DDR2,DDR3no data

Advantages and disadvantages


Physical cores 4 1
Threads 4 1
Chip lithography 45 nm 90 nm
Power consumption (TDP) 95 Watt 115 Watt

We couldn't decide between Core 2 Quad Q9550 and Pentium 4 660. We've got no test results to judge.


Should you still have questions on choice between Core 2 Quad Q9550 and Pentium 4 660, ask them in Comments section, and we shall answer.

User ratings

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Intel Core 2 Quad Q9550
Core 2 Quad Q9550
Intel Pentium 4 660
Pentium 4 660

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4.1 1777 votes

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