Xeon E7-8860 vs E5-2665

Primary details

Comparing Xeon E5-2665 and Xeon E7-8860 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1181	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	7.69	no data
Market segment	Server	Server
Series	no data	Intel Xeon E7
Power efficiency	4.31	no data
Architecture codename	Sandy Bridge-EP (2012)	Westmere-EX (2011)
Release date	6 March 2012 (12 years ago)	5 April 2011 (13 years ago)
Launch price (MSRP)	$142	$4,061

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2665 and Xeon E7-8860 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	2.4 GHz	2.26 GHz
Boost clock speed	3.1 GHz	2.67 GHz
Bus type	no data	QPI
Bus rate	8 GT/s	6.4 GT/s
Multiplier	no data	17
L1 cache	64 KB (per core)	640 KB
L2 cache	256 KB (per core)	2.5 MB
L3 cache	20480 KB (shared)	24 MB
Chip lithography	32 nm	32 nm
Die size	435 mm2	513 mm2
Maximum core temperature	82 °C	69 °C
Number of transistors	2,270 million	2600 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2665 and Xeon E7-8860 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	8 (Multiprocessor)
Socket	FCLGA2011	FCLGA1567,LGA1567
Power consumption (TDP)	115 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2665 and Xeon E7-8860. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	1.0
Hyper-Threading Technology	+	+
Idle States	+	no data
Thermal Monitoring	+	+
Flex Memory Access	-	no data
Demand Based Switching	+	no data

Security technologies

Xeon E5-2665 and Xeon E7-8860 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2665 and Xeon E7-8860 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2665 and Xeon E7-8860. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	384 GB	4 TB
Max memory channels	4	4
Maximum memory bandwidth	51.2 GB/s	34.113 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2665 and Xeon E7-8860.

PCIe version	3.0	no data
PCI Express lanes	40	no data

Pros & cons summary

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Recency	6 March 2012	5 April 2011
Physical cores	8	10
Threads	16	20
Power consumption (TDP)	115 Watt	130 Watt

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Should you still have questions on choice between Xeon E5-2665 and Xeon E7-8860, ask them in Comments section, and we shall answer.

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