i7-990X Extreme Edition vs Xeon E3-1281 v3

Primary details

Comparing Xeon E3-1281 v3 and Core i7-990X Extreme Edition processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1267	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Series	no data	Intel Core i7EE
Power efficiency	5.43	no data
Architecture codename	no data	Westmere (2010−2011)
Release date	1 April 2014 (10 years ago)	13 February 2011 (13 years ago)

Detailed specifications

Xeon E3-1281 v3 and Core i7-990X Extreme Edition 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)	6 (Hexa-Core)
Threads	8	12
Base clock speed	3.7 GHz	no data
Boost clock speed	4.1 GHz	3.46 GHz
Bus type	no data	QPI
Bus rate	5 GT/s	6.4 GT/s
Multiplier	no data	26
L2 cache	no data	1.5 MB
L3 cache	8 MB Intel® Smart Cache	12 MB
Chip lithography	22 nm	32 nm
Die size	no data	239 mm2
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E3-1281 v3 and Core i7-990X Extreme Edition 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 (Uniprocessor)
Socket	FCLGA1150	no data
Power consumption (TDP)	82 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1281 v3 and Core i7-990X Extreme Edition. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	+
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
SIPP	+	-
Fast Memory Access	+	no data

Security technologies

Xeon E3-1281 v3 and Core i7-990X Extreme Edition technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
Identity Protection	+	-
OS Guard	+	no data
Anti-Theft	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1281 v3 and Core i7-990X Extreme Edition are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1281 v3 and Core i7-990X Extreme Edition. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3L-1333, DDR3L-1600	no data
Maximum memory size	32 GB	24 GB
Max memory channels	2	no data
Maximum memory bandwidth	25.6 GB/s	no data
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1281 v3 and Core i7-990X Extreme Edition.

PCIe version	3.0	no data
PCI Express lanes	16	no data

Pros & cons summary

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Recency	1 April 2014	13 February 2011
Physical cores	4	6
Threads	8	12
Chip lithography	22 nm	32 nm
Power consumption (TDP)	82 Watt	130 Watt

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