Core i5-11400F vs Core 2 Quad Q9400s

Primary details

Comparing Core 2 Quad Q9400s and Core i5-11400F processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	720
Place by popularity	not in top-100	38
Cost-effectiveness evaluation	no data	37.99
Market segment	Desktop processor	Desktop processor
Power efficiency	no data	15.61
Architecture codename	Yorkfield (2007−2009)	Rocket Lake (2021)
Release date	18 January 2009 (15 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	no data	$157

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Quad Q9400s and Core i5-11400F 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)	6 (Hexa-Core)
Threads	4	12
Base clock speed	2.66 GHz	2.6 GHz
Boost clock speed	0.67 GHz	4.4 GHz
Bus rate	1333 MHz	8 GT/s
L1 cache	64 KB (per core)	64K (per core)
L2 cache	6 MB (shared)	256K (per core)
L3 cache	0 KB	12 MB (shared)
Chip lithography	45 nm	14 nm
Die size	2x 82 mm2	276 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	76 °C	72 °C
Number of transistors	456 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q9400s and Core i5-11400F 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	1
Socket	LGA775	FCLGA1200
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400s and Core i5-11400F. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	-	+
FMA	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	-	no data
Turbo Boost Max 3.0	no data	-
FSB parity	-	no data
Deep Learning Boost	-	+

Security technologies

Core 2 Quad Q9400s and Core i5-11400F technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
Identity Protection	-	+
SGX	no data	-
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q9400s and Core i5-11400F are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400s and Core i5-11400F. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	50 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

no data

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q9400s and Core i5-11400F.

PCIe version	2.0	4.0
PCI Express lanes	no data	20

Pros & cons summary

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Recency	18 January 2009	16 March 2021
Physical cores	4	6
Threads	4	12
Chip lithography	45 nm	14 nm

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Should you still have questions on choice between Core 2 Quad Q9400s and Core i5-11400F, ask them in Comments section, and we shall answer.

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