Core 2 Quad Q9550s vs Xeon E5345

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2648	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.02	no data
Market segment	Server	Desktop processor
Power efficiency	1.42	no data
Designer	Intel	Intel
Manufacturer	no data	Intel
Architecture codename	Clovertown (2006−2007)	Yorkfield (2007−2009)
Release date	14 November 2006 (19 years ago)	27 January 2009 (16 years ago)
Launch price (MSRP)	$851	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Performance to price scatter graph

Detailed specifications

Xeon E5345 and Core 2 Quad Q9550s 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	2.33 GHz	2.83 GHz
Boost clock speed	0.33 GHz	0.83 GHz
Bus rate	no data	1333 MHz
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	4 MB (per die)	12 MB (shared)
L3 cache	8 MB L2 Cache	0 KB
Chip lithography	65 nm	45 nm
Die size	2x 143 mm2	2x 107 mm2
Maximum case temperature (TCase)	66 °C	76 °C
Number of transistors	582 million	820 million
64 bit support	+	+
Windows 11 compatibility	no data	-
VID voltage range	1V-1.5V	0.85V-1.3625V

Compatibility

Information on Xeon E5345 and Core 2 Quad Q9550s 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	LGA771,PLGA771	LGA775
Power consumption (TDP)	80 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5345 and Core 2 Quad Q9550s. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	+	-
PAE	32 Bit	no data
FSB parity	+	+

Security technologies

Xeon E5345 and Core 2 Quad Q9550s technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5345 and Core 2 Quad Q9550s are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5345 and Core 2 Quad Q9550s. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR2, DDR3 Depends on motherboard

DDR1, DDR2, DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

On certain motherboards (Chipset feature)

Peripherals

Specifications and connection of peripherals supported by Xeon E5345 and Core 2 Quad Q9550s.

PCIe version

no data

2.0

Pros & cons summary

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Recency	14 November 2006	27 January 2009
Chip lithography	65 nm	45 nm
Power consumption (TDP)	80 Watt	65 Watt

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