Core 2 Quad Q9450 vs Core i5-6400

Primary details

Comparing Core i5-6400 and Core 2 Quad Q9450 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1509	2170
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.70	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i5	no data
Architecture codename	Skylake (2015−2016)	Yorkfield (2007−2009)
Release date	1 September 2015 (8 years ago)	March 2008 (16 years ago)
Launch price (MSRP)	$187	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-6400 and Core 2 Quad Q9450 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)	4 (Quad-Core)
Threads	4	4
Base clock speed	2.7 GHz	no data
Boost clock speed	2.7 GHz	2.67 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	27	no data
L1 cache	256 KB	64K (per core)
L2 cache	1 MB	12 MB (shared)
L3 cache	6 MB	0 KB
Chip lithography	14 nm	45 nm
Die size	122 mm2	2x 107 mm2
Maximum case temperature (TCase)	72 °C	71 °C
Number of transistors	no data	820 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Core i5-6400 and Core 2 Quad Q9450 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 (Uniprocessor)	1
Socket	FCLGA1151	775
Power consumption (TDP)	65 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-6400 and Core 2 Quad Q9450. You'll probably need this information if you require some particular technology.

AES-NI	+	no data
AVX	+	no data
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
TSX	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-6400 and Core 2 Quad Q9450 are enumerated here.

AMD-V	+	no data
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-6400 and Core 2 Quad Q9450. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	DDR1, DDR2, DDR3
Maximum memory size	64 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	34.134 GB/s	no data
ECC memory support	-	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Intel HD Graphics 530

no data

Peripherals

Specifications and connection of peripherals supported by Core i5-6400 and Core 2 Quad Q9450.

PCIe version	3.0	no data
PCI Express lanes	16	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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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Pros & cons summary

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Performance score	3.50	1.41
Chip lithography	14 nm	45 nm
Power consumption (TDP)	65 Watt	95 Watt

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Should you still have questions on choice between Core i5-6400 and Core 2 Quad Q9450, ask them in Comments section, and we shall answer.

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