Atom x5-E3940 vs i5-7640X

Primary details

Comparing Core i5-7640X and Atom x5-E3940 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1325	2307
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.97	no data
Market segment	Desktop processor	Laptop
Series	Intel Core i5	5x Intel Atom
Power efficiency	3.74	11.64
Architecture codename	Kaby Lake-X (2017)	Apollo Lake (2014−2016)
Release date	26 June 2017 (7 years ago)	30 August 2014 (10 years ago)
Launch price (MSRP)	$242	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-7640X and Atom x5-E3940 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)	4 (Quad-Core)
Threads	4	4
Base clock speed	4 GHz	1.6 GHz
Boost clock speed	4.2 GHz	1.8 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	40	no data
L1 cache	64K (per core)	56K (per core)
L2 cache	256K (per core)	2 MB (shared)
L3 cache	6 MB (shared)	0 KB
Chip lithography	14 nm	14 nm
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	103 °C
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Core i5-7640X and Atom x5-E3940 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)	1 (Uniprocessor)
Socket	FCLGA2066	Intel BGA 1296
Power consumption (TDP)	112 Watt	10 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-7640X and Atom x5-E3940. 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	+	+
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
TSX	+	-

Security technologies

Core i5-7640X and Atom x5-E3940 technologies aimed at improving security, for example, by protecting against hacks.

TXT

no data

+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-7640X and Atom x5-E3940 are enumerated here.

VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-7640X and Atom x5-E3940. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR3-1866
Maximum memory size	64 GB	8 GB
Max memory channels	2	no data
Maximum memory bandwidth	42.671 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

HD 630

Intel HD Graphics 500

Peripherals

Specifications and connection of peripherals supported by Core i5-7640X and Atom x5-E3940.

PCIe version	3.0	2.0
PCI Express lanes	16	4

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	4.43	1.23
Recency	26 June 2017	30 August 2014
Power consumption (TDP)	112 Watt	10 Watt

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Should you still have questions on choice between Core i5-7640X and Atom x5-E3940, ask them in Comments section, and we shall answer.

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