i7-990X Extreme Edition vs i7-3970X

Primary details

Comparing Core i7-3970X and Core i7-990X Extreme Edition processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1166	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.55	no data
Market segment	Desktop processor	Desktop processor
Series	no data	Intel Core i7EE
Power efficiency	3.38	no data
Architecture codename	Sandy Bridge-E (2011−2013)	Westmere (2010−2011)
Release date	1 November 2012 (12 years ago)	13 February 2011 (13 years ago)
Launch price (MSRP)	$593	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-3970X 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	6 (Hexa-Core)	6 (Hexa-Core)
Threads	12	12
Base clock speed	3.5 GHz	no data
Boost clock speed	4 GHz	3.46 GHz
Bus type	no data	QPI
Bus rate	5 GT/s	6.4 GT/s
Multiplier	no data	26
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	1.5 MB
L3 cache	15 MB (shared)	12 MB
Chip lithography	32 nm	32 nm
Die size	435 mm2	239 mm2
Maximum case temperature (TCase)	70 °C	no data
Number of transistors	2,270 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-3970X 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	FCLGA2011	no data
Power consumption (TDP)	150 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3970X and Core i7-990X Extreme Edition. You'll probably need this information if you require some particular technology.

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

Security technologies

Core i7-3970X and Core i7-990X Extreme Edition technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Identity Protection	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3970X 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 Core i7-3970X and Core i7-990X Extreme Edition. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	64.45 GB	24 GB
Max memory channels	4	no data
Maximum memory bandwidth	51.2 GB/s	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-3970X and Core i7-990X Extreme Edition.

PCIe version	2.0	no data
PCI Express lanes	40	no data

Pros & cons summary

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Recency	1 November 2012	13 February 2011
Power consumption (TDP)	150 Watt	130 Watt

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Should you still have questions on choice between Core i7-3970X and Core i7-990X Extreme Edition, ask them in Comments section, and we shall answer.

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