Celeron N4000 vs 3855U

Place in the ranking	2634	2509
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Celeron
Power efficiency	4.84	14.61
Architecture codename	Skylake (2015−2016)	Goldmont Plus (2017)
Release date	15 August 2015 (9 years ago)	11 December 2017 (6 years ago)
Launch price (MSRP)	$107	$107

Detailed specifications

Celeron 3855U and Celeron N4000 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	2.6 GHz
Bus type	OPI	no data
Bus rate	4 GT/s	no data
Multiplier	16	11
L1 cache	128 KB	112 KB
L2 cache	512 KB	4 MB
L3 cache	2 MB	4 MB
Chip lithography	14 nm	14 nm
Die size	98.57 mm²	no data
Maximum core temperature	100 °C	105 deg C
Number of transistors	1750 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Celeron 3855U and Celeron N4000 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	FCBGA1090
Power consumption (TDP)	15 Watt	6 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 3855U and Celeron N4000. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE4.2
AES-NI	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	-
My WiFi	+	no data
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Smart Response	+	-
GPIO	no data	+
Turbo Boost Max 3.0	no data	-

Security technologies

Celeron 3855U and Celeron N4000 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 3855U and Celeron N4000 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 3855U and Celeron N4000. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600	DDR4
Maximum memory size	32 GB	8 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	38.397 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 510	Intel UHD Graphics 600
Max video memory	32 GB	8 GB
Quick Sync Video	+	+
Clear Video HD	+	no data
Graphics max frequency	900 MHz	650 MHz
Execution Units	no data	12

Graphics interfaces

Available interfaces and connections of Celeron 3855U and Celeron N4000 integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Celeron 3855U and Celeron N4000 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	+
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 N4000 integrated GPUs, sometimes API versions are included.

DirectX	12	12
OpenGL	4.4	4.4

Peripherals

Specifications and connection of peripherals supported by Celeron 3855U and Celeron N4000.

PCIe version	2.0	2.0
PCI Express lanes	10	6
USB revision	no data	2.0/3.0
Total number of SATA ports	no data	2
Max number of SATA 6 Gb/s Ports	no data	2
Number of USB ports	no data	8
Integrated LAN	no data	-
UART	no data	+

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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 3855U 0.77

Celeron N4000 0.93
+20.8%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Celeron 3855U 1219

Celeron N4000 1472
+20.8%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Celeron 3855U 315

Celeron N4000 325
+3.2%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Celeron 3855U 538
+1.9%

Celeron N4000 528