Celeron 3865U vs Pentium 3805U

Primary details

Comparing Pentium 3805U and Celeron 3865U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2552	2473
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Pentium	Intel Celeron
Architecture codename	Broadwell-U (2015)	Kaby Lake-U
Release date	1 March 2015 (9 years ago)	3 January 2017 (7 years ago)
Launch price (MSRP)	$161	$107
Current price	$317 (2x MSRP)	$296 (2.8x MSRP)

Detailed specifications

Pentium 3805U and Celeron 3865U 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	1.9 GHz	1.8 GHz
Boost clock speed	1.9 GHz	1.8 GHz
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	2 MB (shared)	2 MB (shared)
Chip lithography	14 nm	14 nm
Die size	82 mm2	98.7 mm2
Maximum core temperature	105 °C	100 °C
Maximum case temperature (TCase)	105 °C	no data
Number of transistors	1300 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Pentium 3805U and Celeron 3865U 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	FCBGA1168	FCBGA1356,FPBGA1356
Power consumption (TDP)	15 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium 3805U and Celeron 3865U. 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	no data	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	+
TSX	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	-	-
Smart Response	-	+
FDI	+	no data
Fast Memory Access	+	no data
Status	Discontinued	Discontinued

Security technologies

Pentium 3805U and Celeron 3865U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium 3805U and Celeron 3865U are enumerated here.

AMD-V	+	+
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium 3805U and Celeron 3865U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3, DDR4
Maximum memory size	16 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	34.1 GB/s
ECC memory support	no data	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 5th Generation Intel® Processors	Intel HD Graphics 610
Max video memory	no data	32 GB
Quick Sync Video	+	+
Clear Video	+	+
Clear Video HD	-	+
Graphics max frequency	800 MHz	900 MHz
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Pentium 3805U and Celeron 3865U integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Pentium 3805U and Celeron 3865U integrated GPUs, including resolutions over different interfaces.

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

Graphics API support

APIs supported by Pentium 3805U and Celeron 3865U integrated GPUs, sometimes API versions are included.

DirectX	11.2/12	12
OpenGL	no data	4.4

Peripherals

Specifications and connection of peripherals supported by Pentium 3805U and Celeron 3865U.

PCIe version	2.0	2.0
PCI Express lanes	12	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.

Celeron 3865U outperforms Pentium 3805U by 12% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	0.76	0.85
Recency	1 March 2015	3 January 2017
Cost	$161	$107

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Should you still have questions on choice between Pentium 3805U and Celeron 3865U, ask them in Comments section, and we shall answer.

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