Celeron 847 vs 3855U

Primary details

Comparing Celeron 3855U and Celeron 847 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2652	3113
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Celeron
Power efficiency	4.85	1.67
Architecture codename	Skylake (2015−2016)	Sandy Bridge (2011−2013)
Release date	15 August 2015 (9 years ago)	19 June 2011 (13 years ago)
Launch price (MSRP)	$107	$134

Detailed specifications

Celeron 3855U and Celeron 847 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)	2 (Dual-core)
Threads	2	2
Base clock speed	1.6 GHz	1.1 GHz
Boost clock speed	1.6 GHz	1.1 GHz
Bus type	OPI	DMI 2.0
Bus rate	4 GT/s	4 × 5 GT/s
Multiplier	16	11
L1 cache	128 KB	64K (per core)
L2 cache	512 KB	256K (per core)
L3 cache	2 MB	2 MB (shared)
Chip lithography	14 nm	32 nm
Die size	98.57 mm2	131 mm2
Maximum core temperature	100 °C	100 °C
Number of transistors	1750 Million	504 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Celeron 3855U and Celeron 847 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	FCBGA1356	FCBGA1023
Power consumption (TDP)	15 Watt	17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 3855U and Celeron 847. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	-
FMA	-	+
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	no data
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
Smart Response	+	no data
Demand Based Switching	no data	-
FDI	no data	+
Fast Memory Access	no data	+

Security technologies

Celeron 3855U and Celeron 847 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 3855U and Celeron 847 are enumerated here.

VT-d	+	-
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 3855U and Celeron 847. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600	DDR3
Maximum memory size	32 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	21.335 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 510	Intel HD Graphics (Sandy Bridge) (350 - 800 MHz)
Max video memory	32 GB	no data
Quick Sync Video	+	-
Clear Video HD	+	-
Graphics max frequency	900 MHz	800 MHz

Graphics interfaces

Available interfaces and connections of Celeron 3855U and Celeron 847 integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Celeron 3855U and Celeron 847 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data
Max resolution over VGA	N/A	no data

Graphics API support

APIs supported by Celeron 3855U and Celeron 847 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.4	no data

Peripherals

Specifications and connection of peripherals supported by Celeron 3855U and Celeron 847.

PCIe version	2.0	2.0
PCI Express lanes	10	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	0.77	0.30
Integrated graphics card	1.61	0.34
Recency	15 August 2015	19 June 2011
Chip lithography	14 nm	32 nm
Power consumption (TDP)	15 Watt	17 Watt

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Should you still have questions on choice between Celeron 3855U and Celeron 847, ask them in Comments section, and we shall answer.

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