Core 2 Quad Q9400s vs Xeon E5606

Primary details

Comparing Xeon E5606 and Core 2 Quad Q9400s processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2041	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.42	no data
Market segment	Server	Desktop processor
Architecture codename	Westmere-EP (2010−2011)	Yorkfield (2007−2009)
Release date	14 February 2011 (13 years ago)	January 2009 (15 years ago)
Launch price (MSRP)	$46	no data
Current price	$105 (2.3x MSRP)	$120

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5606 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	4	4
Base clock speed	2.13 GHz	2.66 GHz
Boost clock speed	0.13 GHz	2.67 GHz
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	32 nm	45 nm
Die size	239 mm2	2x 81 mm2
Maximum core temperature	no data	76 °C
Maximum case temperature (TCase)	no data	76 °C
Number of transistors	1,170 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 Xeon E5606 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	2	1
Socket	FCLGA1366,LGA1366	LGA775
Power consumption (TDP)	80 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5606 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	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	-	+
Demand Based Switching	+	-
PAE	40 Bit	no data
FSB parity	no data	-
Status	Discontinued	Discontinued

Security technologies

Xeon E5606 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 Xeon E5606 and Core 2 Quad Q9400s are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5606 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	288 GB	no data
Max memory channels	3	no data
Maximum memory bandwidth	25.6 GB/s	no data
ECC memory support	+	no data

Peripherals

Specifications and connection of peripherals supported by Xeon E5606 and Core 2 Quad Q9400s.

PCIe version

2.0

no data

Pros & cons summary

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Chip lithography	32 nm	45 nm
Power consumption (TDP)	80 Watt	65 Watt

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Should you still have questions on choice between Xeon E5606 and Core 2 Quad Q9400s, ask them in Comments section, and we shall answer.

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