Core i5-8400B vs Celeron N2840

Primary details

Comparing Celeron N2840 and Core i5-8400B processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Core i5
Architecture codename	Bay Trail-M (2013−2014)	Coffee Lake (2017−2019)
Release date	22 May 2014 (10 years ago)	2 April 2018 (6 years ago)
Launch price (MSRP)	no data	$182
Current price	$287	$54 (0.3x MSRP)

Detailed specifications

Celeron N2840 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	2 (Dual-core)	6 (Hexa-Core)
Threads	2	6
Base clock speed	2.16 GHz	2.8 GHz
Boost clock speed	2.58 GHz	4 GHz
Bus support	no data	4 × 8 GT/s
L1 cache	56K (per core)	384 KB
L2 cache	512K (per core)	1.5 MB
L3 cache	0 KB	9 MB
Chip lithography	22 nm	14 nm
Die size	no data	126 mm2
Maximum core temperature	100 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	No	No

Compatibility

Information on Celeron N2840 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	1
Socket	FCBGA1170	FCBGA1440
Power consumption (TDP)	7.5 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron N2840 and Core i5-8400B. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	-	+
AVX	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	-
TSX	no data	-
Idle States	+	+
Thermal Monitoring	no data	+
SIPP	no data	-
Smart Connect	+	no data
Status	Discontinued	Discontinued

Security technologies

Celeron N2840 and Core i5-8400B technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron N2840 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 Celeron N2840 and Core i5-8400B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-2666
Maximum memory size	8 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	21.32 GB/s	42.671 GB/s
ECC memory support	-	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Intel Atom® Processor Z3700 Series	Intel UHD Graphics 630
Max video memory	no data	64 GB
Quick Sync Video	+	+
Clear Video	no data	+
Clear Video HD	-	+
Graphics max frequency	792 MHz	1.05 GHz
InTru 3D	-	+

Graphics interfaces

Available interfaces and connections of Celeron N2840 and Core i5-8400B integrated GPUs.

Number of displays supported

2

3

Graphics image quality

Maximum display resolutions supported by Celeron N2840 and Core i5-8400B integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096x2304@30Hz
Max resolution over eDP	no data	4096x2304@60Hz
Max resolution over DisplayPort	no data	4096x2304@60Hz

Graphics API support

APIs supported by Celeron N2840 and Core i5-8400B integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.5

Peripherals

Specifications and connection of peripherals supported by Celeron N2840 and Core i5-8400B.

PCIe version	2.0	3.0
PCI Express lanes	4	16
USB revision	3.0 and 2.0	no data
Total number of SATA ports	2	no data
Number of USB ports	5	no data

Pros & cons summary

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Recency	22 May 2014	2 April 2018
Physical cores	2	6
Threads	2	6
Chip lithography	22 nm	14 nm
Power consumption (TDP)	7 Watt	65 Watt

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