i7-3940XM Extreme Edition vs i7-7820X

Primary details

Comparing Core i7-7820X and Core i7-3940XM Extreme Edition processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	724	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.45	no data
Market segment	Desktop processor	Laptop
Series	Intel Core i7	Intel Core i7EE
Power efficiency	7.31	no data
Architecture codename	Skylake (server) (2017−2018)	Ivy Bridge (2012−2013)
Release date	30 May 2017 (7 years ago)	no data
Launch price (MSRP)	$599	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-7820X and Core i7-3940XM 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	8 (Octa-Core)	4 (Quad-Core)
Threads	16	8
Base clock speed	3.6 GHz	no data
Boost clock speed	4.5 GHz	3 GHz
Bus type	DMI 3.0	DMI
Bus rate	4 × 8 GT/s	5 GT/s
Multiplier	36	30
L1 cache	512 KB	no data
L2 cache	8 MB	1 MB
L3 cache	11 MB (shared)	8 MB
Chip lithography	14 nm	22 nm
Maximum core temperature	99 °C	no data
Maximum case temperature (TCase)	72 °C	no data
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i7-7820X and Core i7-3940XM 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 (Uniprocessor)	no data
Socket	FCLGA2066	no data
Power consumption (TDP)	140 Watt	55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7820X and Core i7-3940XM 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, Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Turbo Boost Max 3.0	+	no data

Security technologies

Core i7-7820X and Core i7-3940XM Extreme Edition technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7820X and Core i7-3940XM Extreme Edition are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7820X and Core i7-3940XM Extreme Edition. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	no data
Maximum memory size	128 GB	32 GB
Max memory channels	4	no data
Maximum memory bandwidth	85.33 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

no data

Peripherals

Specifications and connection of peripherals supported by Core i7-7820X and Core i7-3940XM Extreme Edition.

PCIe version	3.0	3.0
PCI Express lanes	28	16

Pros & cons summary

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Physical cores	8	4
Threads	16	8
Chip lithography	14 nm	22 nm
Power consumption (TDP)	140 Watt	55 Watt

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Should you still have questions on choice between Core i7-7820X and Core i7-3940XM Extreme Edition, ask them in Comments section, and we shall answer.

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