Core 2 Quad Q9550s vs Core 2 Duo T5900

Primary details

Comparing Core 2 Duo T5900 and Core 2 Quad Q9550s processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core 2 Duo	no data
Architecture codename	Merom (2006−2008)	Yorkfield (2007−2009)
Release date	1 October 2008 (15 years ago)	January 2009 (15 years ago)
Current price	$41	$130

Detailed specifications

Core 2 Duo T5900 and Core 2 Quad Q9550s 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 cores	2 (Dual-core)	4 (Quad-Core)
Threads	2	4
Base clock speed	no data	2.83 GHz
Boost clock speed	2.2 GHz	2.83 GHz
Bus support	800 MHz	no data
L1 cache	128 KB	64K (per core)
L2 cache	2 MB	12 MB (shared)
L3 cache	no data	0 KB
Chip lithography	65 nm	45 nm
Die size	no data	2x 107 mm2
Maximum core temperature	no data	76 °C
Maximum case temperature (TCase)	no data	76 °C
Number of transistors	no data	820 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	no data	0.85V-1.3625V

Compatibility

Information on Core 2 Duo T5900 and Core 2 Quad Q9550s 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 configuration	no data	1
Socket	Socket P	LGA775
Power consumption (TDP)	35 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T5900 and Core 2 Quad Q9550s. You'll probably need this information if you require some particular technology.

AES-NI	no data	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	no data	-
Hyper-Threading Technology	no data	-
Idle States	no data	+
Thermal Monitoring	no data	+
Demand Based Switching	no data	-
AMT	+	no data
FSB parity	no data	+
Status	no data	Discontinued

Security technologies

Core 2 Duo T5900 and Core 2 Quad Q9550s technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo T5900 and Core 2 Quad Q9550s are enumerated here.

VT-d	no data	+
VT-x	no data	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo T5900 and Core 2 Quad Q9550s. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

no data

DDR1, DDR2, DDR3

Pros & cons summary

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Physical cores	2	4
Threads	2	4
Chip lithography	65 nm	45 nm
Power consumption (TDP)	35 Watt	65 Watt

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Should you still have questions on choice between Core 2 Duo T5900 and Core 2 Quad Q9550s, ask them in Comments section, and we shall answer.

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