i5-8400B vs Atom N270

Primary details

Comparing Atom N270 and Core i5-8400B processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	3380	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Atom	Intel Core i5
Power efficiency	3.41	no data
Architecture codename	DiamondVille (2008−2009)	Coffee Lake (2017−2019)
Release date	2 April 2008 (16 years ago)	2 April 2018 (6 years ago)
Launch price (MSRP)	$44	$182

Detailed specifications

Atom N270 and Core i5-8400B 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	1 (Single-Core)	6 (Hexa-Core)
Threads	2	6
Base clock speed	1.6 GHz	2.8 GHz
Boost clock speed	0.1 GHz	4 GHz
Bus type	FSB	DMI 3.0
Bus rate	533.33 MT/s	4 × 8 GT/s
Multiplier	12	28
L1 cache	56 KB	384 KB
L2 cache	512 KB	1.5 MB
L3 cache	0 KB	9 MB
Chip lithography	45 nm	14 nm
Die size	25.9638 mm2	126 mm2
Maximum core temperature	90 °C	100 °C
Number of transistors	47 Million	no data
64 bit support	-	+
Windows 11 compatibility	-	+
VID voltage range	0.9V-1.1625V	no data

Compatibility

Information on Atom N270 and Core i5-8400B 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	PBGA437	FCBGA1440
Power consumption (TDP)	2.5 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom N270 and Core i5-8400B. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE, Intel® SSE2, Intel® SSE3, Intel® SSSE3	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	+	-
Idle States	-	+
Thermal Monitoring	+	+
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Atom N270 and Core i5-8400B technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Secure Key	no data	+
MPX	-	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom N270 and Core i5-8400B are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom N270 and Core i5-8400B. Depending on the motherboard, higher memory frequencies may be supported.

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

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	-	Intel UHD Graphics 630
Max video memory	-	64 GB
Quick Sync Video	-	+
Clear Video	-	+
Clear Video HD	-	+
Graphics max frequency	-	1.05 GHz
InTru 3D	-	+

Graphics interfaces

Available interfaces and connections of Atom N270 and Core i5-8400B integrated GPUs.

Number of displays supported

-

3

Graphics image quality

Maximum display resolutions supported by Atom N270 and Core i5-8400B integrated GPUs, including resolutions over different interfaces.

4K resolution support	-	+
Max resolution over HDMI 1.4	-	4096x2304@30Hz
Max resolution over eDP	-	4096x2304@60Hz
Max resolution over DisplayPort	-	4096x2304@60Hz

Graphics API support

APIs supported by Atom N270 and Core i5-8400B integrated GPUs, sometimes API versions are included.

DirectX	-	12
OpenGL	-	4.5

Peripherals

Specifications and connection of peripherals supported by Atom N270 and Core i5-8400B.

PCIe version	no data	3.0
PCI Express lanes	no data	16

Pros & cons summary

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Recency	2 April 2008	2 April 2018
Physical cores	1	6
Threads	2	6
Chip lithography	45 nm	14 nm
Power consumption (TDP)	2 Watt	65 Watt

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