Atom Z3740 vs i5-5257U

Primary details

Comparing Core i5-5257U and Atom Z3740 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2016	3005
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i5	no data
Power efficiency	5.98	18.45
Architecture codename	Broadwell-U (2015)	Bay Trail-T (2013−2014)
Release date	1 March 2015 (9 years ago)	27 September 2013 (11 years ago)
Launch price (MSRP)	$315	$32

Detailed specifications

Core i5-5257U and Atom Z3740 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	2 (Dual-core)	4 (Quad-Core)
Threads	4	4
Base clock speed	2.7 GHz	1.33 GHz
Boost clock speed	3.1 GHz	1.86 GHz
Bus rate	5 GT/s	no data
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	512K (per core)
L3 cache	3 MB (shared)	0 KB
Chip lithography	14 nm	22 nm
Die size	133 mm2	no data
Maximum core temperature	105 °C	90 °C
Maximum case temperature (TCase)	105 °C	no data
Number of transistors	1900 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-5257U and Atom Z3740 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	FCBGA1168	UTFCBGA1380
Power consumption (TDP)	28 Watt	2 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-5257U and Atom Z3740. 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
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Smart Response	+	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Core i5-5257U and Atom Z3740 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-5257U and Atom Z3740 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-5257U and Atom Z3740. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16 GB	4 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	17.1 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel Iris Graphics 6100	Intel HD Graphics for Intel Atom Processor Z3700 Series
Max video memory	16 GB	no data
Quick Sync Video	+	+
Clear Video	+	no data
Clear Video HD	+	+
Graphics max frequency	1.05 GHz	667 MHz
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-5257U and Atom Z3740 integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-

Graphics image quality

Maximum display resolutions supported by Core i5-5257U and Atom Z3740 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	2560X1600@60Hz	no data
Max resolution over DisplayPort	3840x2160@60Hz	no data

Graphics API support

APIs supported by Core i5-5257U and Atom Z3740 integrated GPUs, sometimes API versions are included.

DirectX	11.2/12	no data
OpenGL	4.3	no data

Peripherals

Specifications and connection of peripherals supported by Core i5-5257U and Atom Z3740.

PCIe version	2.0	no data
PCI Express lanes	12	no data

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	1.77	0.39
Integrated graphics card	2.32	0.77
Recency	1 March 2015	27 September 2013
Physical cores	2	4
Chip lithography	14 nm	22 nm
Power consumption (TDP)	28 Watt	2 Watt

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Should you still have questions on choice between Core i5-5257U and Atom Z3740, ask them in Comments section, and we shall answer.

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