Xeon E5-1691 V3 vs E5-1660 v2

Primary details

Comparing Xeon E5-1660 v2 and Xeon E5-1691 V3 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1047	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.96	no data
Market segment	Server	Server
Power efficiency	4.70	no data
Architecture codename	Ivy Bridge-E (2013)	Haswell-EP (2014−2015)
Release date	1 September 2013 (11 years ago)	8 September 2014 (10 years ago)
Launch price (MSRP)	$1,809	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-1660 v2 and Xeon E5-1691 V3 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	6 (Hexa-Core)	14 (Tetradeca-Core)
Threads	12	28
Base clock speed	3.7 GHz	2.5 GHz
Boost clock speed	4 GHz	3.4 GHz
Bus rate	0 GT/s	no data
L1 cache	64 KB (per core)	64K (per core)
L2 cache	256 KB (per core)	256K (per core)
L3 cache	15 MB (shared)	35 MB (shared)
Chip lithography	22 nm	22 nm
Die size	160 mm2	356 mm2
Maximum core temperature	70 °C	no data
Number of transistors	1,400 million	2,600 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Xeon E5-1660 v2 and Xeon E5-1691 V3 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	1	1
Socket	FCLGA2011	2011-3
Power consumption (TDP)	130 Watt	135 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-1660 v2 and Xeon E5-1691 V3. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E5-1660 v2 and Xeon E5-1691 V3 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-1660 v2 and Xeon E5-1691 V3 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-1660 v2 and Xeon E5-1691 V3. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-2133
Maximum memory size	256 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	59.7 GB/s	no data
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Xeon E5-1660 v2 and Xeon E5-1691 V3.

PCIe version	3.0	3.0
PCI Express lanes	40	40

Pros & cons summary

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Recency	1 September 2013	8 September 2014
Physical cores	6	14
Threads	12	28
Power consumption (TDP)	130 Watt	135 Watt

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Should you still have questions on choice between Xeon E5-1660 v2 and Xeon E5-1691 V3, ask them in Comments section, and we shall answer.

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