Core 2 Quad Q9400s vs Core i7-950

Primary details

Comparing Core i7-950 and Core 2 Quad Q9400s processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1813	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.74	no data
Market segment	Desktop processor	Desktop processor
Series	Core i7 (Desktop)	no data
Architecture codename	Bloomfield (2008−2010)	Yorkfield (2007−2009)
Release date	June 2009 (15 years ago)	January 2009 (15 years ago)
Launch price (MSRP)	$290	no data
Current price	$135 (0.5x MSRP)	$129

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-950 and Core 2 Quad Q9400s 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	8	4
Base clock speed	3.06 GHz	2.66 GHz
Boost clock speed	3.33 GHz	2.67 GHz
Bus support	1333 MHz	no data
L1 cache	64 KB (per core)	64K (per core)
L2 cache	256 KB (per core)	6 MB (shared)
L3 cache	8 MB (shared)	0 KB
Chip lithography	45 nm	45 nm
Die size	263 mm2	2x 81 mm2
Maximum core temperature	68 °C	76 °C
Maximum case temperature (TCase)	no data	76 °C
Number of transistors	731 million	456 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	no data	0.85V-1.3625V

Compatibility

Information on Core i7-950 and Core 2 Quad Q9400s 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	FCLGA1366	LGA775
Power consumption (TDP)	130 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-950 and Core 2 Quad Q9400s. You'll probably need this information if you require some particular technology.

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

Security technologies

Core i7-950 and Core 2 Quad Q9400s technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-950 and Core 2 Quad Q9400s are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-950 and Core 2 Quad Q9400s. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR1, DDR2, DDR3
Maximum memory size	24 GB	no data
Max memory channels	3	no data
Maximum memory bandwidth	25.6 GB/s	no data
ECC memory support	-	no data

Pros & cons summary

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Threads	8	4
Power consumption (TDP)	130 Watt	65 Watt

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Should you still have questions on choice between Core i7-950 and Core 2 Quad Q9400s, ask them in Comments section, and we shall answer.

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