Atom x5-Z8300 vs Celeron B840

Primary details

Comparing Celeron B840 and Atom x5-Z8300 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2782	2860
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	5x Intel Atom
Power efficiency	1.64	no data
Architecture codename	Sandy Bridge (2011−2013)	Cherry Trail (2015−2016)
Release date	1 July 2011 (13 years ago)	2 March 2015 (9 years ago)
Launch price (MSRP)	$86	no data

Detailed specifications

Celeron B840 and Atom x5-Z8300 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	4
Base clock speed	1.9 GHz	1.44 GHz
Boost clock speed	1.9 GHz	1.84 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	no data
Multiplier	19	no data
L1 cache	128 KB	no data
L2 cache	512 KB	2 MB
L3 cache	2 MB (shared)	0 KB
Chip lithography	32 nm	14 nm
Die size	131 mm2	no data
Maximum core temperature	100 °C	90 °C
Number of transistors	504 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Celeron B840 and Atom x5-Z8300 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	FCPGA988,PGA988	UTFCBGA592
Power consumption (TDP)	35 Watt	no data

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B840 and Atom x5-Z8300. You'll probably need this information if you require some particular technology.

AES-NI	-	+
FMA	+	-
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Celeron B840 and Atom x5-Z8300 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Secure Boot	no data	+
Identity Protection	-	+
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron B840 and Atom x5-Z8300 are enumerated here.

VT-d	-	no data
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B840 and Atom x5-Z8300. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16 GB	2 GB
Max memory channels	2	1
Maximum memory bandwidth	21.335 GB/s	12.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	Intel HD Graphics
Max video memory	no data	2 GB
Graphics max frequency	1 GHz	500 MHz
Execution Units	no data	12

Graphics interfaces

Available interfaces and connections of Celeron B840 and Atom x5-Z8300 integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Celeron B840 and Atom x5-Z8300 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4

no data

1920x1080

Peripherals

Specifications and connection of peripherals supported by Celeron B840 and Atom x5-Z8300.

PCIe version	2.0	2.0
PCI Express lanes	16	1
USB revision	no data	3.0

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	0.63	0.53
Recency	1 July 2011	2 March 2015
Physical cores	2	4
Threads	2	4
Chip lithography	32 nm	14 nm

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Should you still have questions on choice between Celeron B840 and Atom x5-Z8300, ask them in Comments section, and we shall answer.

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