Xeon E5-4640 v2 vs E5-2660

Primary details

Comparing Xeon E5-2660 and Xeon E5-4640 v2 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1198	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	6.78	no data
Market segment	Server	Server
Power efficiency	5.12	no data
Architecture codename	Sandy Bridge-EP (2012)	no data
Release date	6 March 2012 (12 years ago)	1 January 2014 (10 years ago)
Launch price (MSRP)	$85	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2660 and Xeon E5-4640 v2 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	8 (Octa-Core)	10 (Deca-Core)
Threads	16	20
Base clock speed	2.2 GHz	2.2 GHz
Boost clock speed	3 GHz	2.7 GHz
Bus rate	8 GT/s	8 GT/s
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	no data
L3 cache	20480 KB (shared)	20 MB Intel® Smart Cache
Chip lithography	32 nm	22 nm
Die size	435 mm2	no data
Maximum core temperature	73 °C	75 °C
Number of transistors	2,270 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2660 and Xeon E5-4640 v2 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	4
Socket	FCLGA2011	FCLGA2011
Power consumption (TDP)	95 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2660 and Xeon E5-4640 v2. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® AVX
AES-NI	+	+
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	-	no data
Demand Based Switching	+	+
PAE	no data	46 Bit

Security technologies

Xeon E5-2660 and Xeon E5-4640 v2 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2660 and Xeon E5-4640 v2 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2660 and Xeon E5-4640 v2. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-800, DDR3-1066, DDR3-1333, DDR3-1600, DDR3-1866
Maximum memory size	384 GB	768 GB
Max memory channels	4	4
Maximum memory bandwidth	51.2 GB/s	59.7 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2660 and Xeon E5-4640 v2.

PCIe version	3.0	3.0
PCI Express lanes	40	40

Pros & cons summary

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Recency	6 March 2012	1 January 2014
Physical cores	8	10
Threads	16	20
Chip lithography	32 nm	22 nm

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Should you still have questions on choice between Xeon E5-2660 and Xeon E5-4640 v2, ask them in Comments section, and we shall answer.

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