Core i5-670 vs Core 2 Quad Q9400

General info

Comparing Core 2 Quad Q9400 and Core i5-670 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2105	1954
Place by popularity	not in top-100	not in top-100
Value for money	3.51	0.40
Market segment	Desktop processor	Desktop processor
Architecture codename	Yorkfield (2007−2009)	Clarkdale (2010−2011)
Release date	August 2008 (15 years ago)	7 January 2010 (14 years ago)
Launch price (MSRP)	no data	$252
Current price	$62	$66 (0.3x MSRP)

Value for money

Performance per price, higher is better.

Core 2 Quad Q9400 has 778% better value for money than i5-670.

Technical specs

Core 2 Quad Q9400 and Core i5-670 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	4
Base clock speed	2.66 GHz	3.46 GHz
Boost clock speed	2.67 GHz	3.73 GHz
L1 cache	64K (per core)	64 KB (per core)
L2 cache	6 MB (shared)	256 KB (per core)
L3 cache	0 KB	4 MB (shared)
Chip lithography	45 nm	32 nm
Die size	2x 81 mm2	81 mm2
Maximum core temperature	71 °C	73 °C
Maximum case temperature (TCase)	71 °C	no data
Number of transistors	456 million	382 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q9400 and Core i5-670 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	FCLGA1156
Power consumption (TDP)	95 Watt	73 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Core i5-670. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.2
AES-NI	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	1.0
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	-
Demand Based Switching	-	-
PAE	no data	36 Bit
FDI	no data	+
FSB parity	-	no data
Status	Discontinued	Discontinued

Security technologies

Core 2 Quad Q9400 and Core i5-670 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 i5-670 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 Q9400 and Core i5-670. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR3
Maximum memory size	no data	16.6 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	21 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel® HD Graphics for Previous Generation Intel® Processors
Clear Video HD	no data	+

Graphics interfaces

Available interfaces and connections of Core 2 Quad Q9400 and Core i5-670 integrated GPUs.

Number of displays supported

no data

2

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q9400 and Core i5-670.

PCIe version	no data	2.0
PCI Express lanes	no data	16

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.

Core i5-670 outperforms Core 2 Quad Q9400 by 20% based on our aggregated benchmark results.

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Advantages and disadvantages

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Performance score	1.37	1.64
Physical cores	4	2
Chip lithography	45 nm	32 nm
Power consumption (TDP)	95 Watt	73 Watt

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Should you still have questions on choice between Core 2 Quad Q9400 and Core i5-670, ask them in Comments section, and we shall answer.

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