Celeron 3855U vs 3865U

General info

Comparing Celeron 3865U and Celeron 3855U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2433	2449
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Celeron
Architecture codename	Kaby Lake-U	Skylake (2015−2016)
Release date	3 January 2017 (7 years ago)	15 August 2015 (8 years ago)
Launch price (MSRP)	$107	$107
Current price	$296 (2.8x MSRP)	$315 (2.9x MSRP)

Technical specs

Celeron 3865U and Celeron 3855U 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	1.8 GHz	1.6 GHz
Boost clock speed	1.8 GHz	1.6 GHz
Bus support	no data	4 GT/s
L1 cache	64K (per core)	128 KB
L2 cache	256K (per core)	512 KB
L3 cache	2 MB (shared)	2 MB
Chip lithography	14 nm	14 nm
Die size	98.7 mm2	98.57 mm210.3 mm × 9.57 mm
Maximum core temperature	100 °C	100 °C
Number of transistors	no data	1750 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Celeron 3865U and Celeron 3855U 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	FCBGA1356,FPBGA1356	FCBGA1356
Power consumption (TDP)	15 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 3865U and Celeron 3855U. 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	+	+
AVX	+	no data
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
My WiFi	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	+	-
TSX	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	-	-
Smart Response	+	+
Status	Discontinued	Discontinued

Security technologies

Celeron 3865U and Celeron 3855U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 3865U and Celeron 3855U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 3865U and Celeron 3855U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4, DDR3	DDR4-1866, DDR4-2133, LPDDR3-1600, LPDDR3-1866, DDR3L-1333, DDR3L-1600
Maximum memory size	32 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	34.1 GB/s	34.1 GB/s
ECC memory support	-	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 610	Intel HD Graphics 510
Max video memory	32 GB	32 GB
Quick Sync Video	+	+
Clear Video	+	no data
Clear Video HD	+	+
Graphics max frequency	900 MHz	900 MHz

Graphics interfaces

Available interfaces and connections of Celeron 3865U and Celeron 3855U integrated GPUs.

Number of displays supported	3	3
eDP	+	+
DisplayPort	+	+
HDMI	+	+
DVI	+	+

Graphics image quality

Maximum display resolutions supported by Celeron 3865U and Celeron 3855U integrated GPUs, including resolutions over different interfaces.

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

Graphics API support

APIs supported by Celeron 3865U and Celeron 3855U integrated GPUs, sometimes API versions are included.

DirectX	12	12
OpenGL	4.4	4.4

Peripherals

Specifications and connection of peripherals supported by Celeron 3865U and Celeron 3855U.

PCIe version	2.0	2.0
PCI Express lanes	10	10

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.

3865U outperforms 3855U by 2% based on our aggregated benchmark results.

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Advantages and disadvantages

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Performance score	0.85	0.83
Integrated graphics card	1.84	1.37
Recency	3 January 2017	15 August 2015

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Should you still have questions on choice between Celeron 3865U and Celeron 3855U, ask them in Comments section, and we shall answer.

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