i5-10400H vs Celeron B840

Primary details

Comparing Celeron B840 and Core i5-10400H processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2785	1166
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Comet Lake
Power efficiency	1.65	11.25
Architecture codename	Sandy Bridge (2011−2013)	Comet Lake-H (2020)
Release date	1 July 2011 (13 years ago)	2 April 2020 (4 years ago)
Launch price (MSRP)	$86	no data

Detailed specifications

Celeron B840 and Core i5-10400H 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	2	8
Base clock speed	1.9 GHz	2.6 GHz
Boost clock speed	1.9 GHz	4.6 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	8 GT/s
Multiplier	19	no data
L1 cache	128 KB	64K (per core)
L2 cache	512 KB	256K (per core)
L3 cache	2 MB (shared)	6 MB (shared)
Chip lithography	32 nm	14 nm
Die size	131 mm2	no data
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	504 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Celeron B840 and Core i5-10400H 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
Socket	FCPGA988,PGA988	FCBGA1440
Power consumption (TDP)	35 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B840 and Core i5-10400H. 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	-	+
FMA	+	-
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
My WiFi	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	-	+
Demand Based Switching	-	no data
Turbo Boost Max 3.0	no data	-
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Celeron B840 and Core i5-10400H technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	no data	+
Identity Protection	-	+
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 B840 and Core i5-10400H are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B840 and Core i5-10400H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4
Maximum memory size	16 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	21.335 GB/s	45.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	Intel® UHD Graphics for 10th Gen Intel® Processors
Quick Sync Video	-	+
Graphics max frequency	1 GHz	1.1 GHz

Graphics interfaces

Available interfaces and connections of Celeron B840 and Core i5-10400H integrated GPUs.

Number of displays supported	2	3
eDP	+	+
DisplayPort	+	+
HDMI	+	+
DVI	no data	+
SDVO	+	no data
CRT	+	no data

Graphics image quality

Maximum display resolutions supported by Celeron B840 and Core i5-10400H integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096 x 2304@30Hz
Max resolution over eDP	no data	4096 x 2304@60Hz
Max resolution over DisplayPort	no data	4096 x 2304@60Hz

Graphics API support

APIs supported by Celeron B840 and Core i5-10400H 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 B840 and Core i5-10400H.

PCIe version	2.0	3.0
PCI Express lanes	16	16

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	0.62	5.45
Recency	1 July 2011	2 April 2020
Physical cores	2	4
Threads	2	8
Chip lithography	32 nm	14 nm
Power consumption (TDP)	35 Watt	45 Watt

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Should you still have questions on choice between Celeron B840 and Core i5-10400H, ask them in Comments section, and we shall answer.

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