Phenom II X4 940 BE vs Xeon E5345

Primary details

Comparing Xeon E5345 and Phenom II X4 940 BE processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2355	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.04	no data
Market segment	Server	Desktop processor
Power efficiency	1.40	no data
Architecture codename	Clovertown (2006−2007)	Deneb (2009−2011)
Release date	14 November 2006 (18 years ago)	8 January 2009 (15 years ago)
Launch price (MSRP)	$851	$275

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5345 and Phenom II X4 940 BE 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	3 GHz
Boost clock speed	0.33 GHz	3 GHz
L1 cache	64 KB (per core)	128 KB (per core)
L2 cache	4 MB (per die)	512 KB (per core)
L3 cache	8 MB L2 Cache	6 MB (shared)
Chip lithography	65 nm	45 nm
Die size	2x 143 mm2	258 mm2
Maximum case temperature (TCase)	66 °C	no data
Number of transistors	582 million	758 million
64 bit support	+	+
Windows 11 compatibility	no data	-
Unlocked multiplier	-	+
VID voltage range	1V-1.5V	no data

Compatibility

Information on Xeon E5345 and Phenom II X4 940 BE 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	AM2+
Power consumption (TDP)	80 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5345 and Phenom II X4 940 BE. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E5345 and Phenom II X4 940 BE technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5345 and Phenom II X4 940 BE are enumerated here.

AMD-V	-	+
VT-x	+	no data
EPT	-	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5345 and Phenom II X4 940 BE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR2, DDR3 Depends on motherboard

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 Phenom II X4 940 BE.

PCIe version

no data

2.0

Pros & cons summary

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Recency	14 November 2006	8 January 2009
Chip lithography	65 nm	45 nm
Power consumption (TDP)	80 Watt	125 Watt

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Should you still have questions on choice between Xeon E5345 and Phenom II X4 940 BE, ask them in Comments section, and we shall answer.

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