Core 2 Duo T5450 vs Core 2 Quad Q9400

Primary details

Comparing Core 2 Quad Q9400 and Core 2 Duo T5450 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2238	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Series	no data	Core 2 Duo
Power efficiency	1.33	no data
Architecture codename	Yorkfield (2007−2009)	Merom-2048 (2006−2008)
Release date	August 2008 (16 years ago)	no data (2024 years ago)

Detailed specifications

Core 2 Quad Q9400 and Core 2 Duo T5450 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	4 (Quad-Core)	2 (Dual-core)
Threads	4	2
Base clock speed	2.66 GHz	1.66 GHz
Boost clock speed	2.67 GHz	1.66 GHz
Bus rate	1333 MHz	667 MHz
L1 cache	64K (per core)	no data
L2 cache	6 MB (shared)	no data
L3 cache	0 KB	2 MB L2 Cache
Chip lithography	45 nm	65 nm
Die size	2x 81 mm2	no data
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	71 °C	no data
Number of transistors	456 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.3625V	1.075V-1.25V

Compatibility

Information on Core 2 Quad Q9400 and Core 2 Duo T5450 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	1	no data
Socket	LGA775	PPGA478
Power consumption (TDP)	95 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Core 2 Duo T5450. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Quad Q9400 and Core 2 Duo T5450 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q9400 and Core 2 Duo T5450 are enumerated here.

VT-d	+	no data
VT-x	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400 and Core 2 Duo T5450. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Pros & cons summary

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Physical cores	4	2
Threads	4	2
Chip lithography	45 nm	65 nm
Power consumption (TDP)	95 Watt	35 Watt

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Should you still have questions on choice between Core 2 Quad Q9400 and Core 2 Duo T5450, ask them in Comments section, and we shall answer.

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