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Overview

The Celeron 3855U is manufactured by Intel. It was released in 15 August 2015 (10 years ago). It is based on the Skylake (2015−2016) architecture. It features 2 cores and 2 threads. Base frequency is 1.6 GHz, with boost up to 1.6 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600. Passmark benchmark score: 1,215 points. Launch price was $107.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Celeron 3855U is positioned at rank #193 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar Celeron 3855U

#181

Atom x5-Z8300

MSRP: $20|Avg: N/A

362%

#182

Atom Z3735G

MSRP: $17|Avg: N/A

357%

#183

Core i5-480M

MSRP: $81|Avg: $77

328%

#184

Core i5-460M

MSRP: $80|Avg: $129

326%

#185

Core i5-2540M

MSRP: $266|Avg: $10

323%

#187

Core i5-450M

MSRP: $32|Avg: $31

312%

#188

Core i3-380M

MSRP: $49|Avg: $25

299%

#189

Core i5-430M

MSRP: N/A|Avg: $33

299%

#190

Core 2 Duo T6600

MSRP: N/A|Avg: $4

291%

#193

Celeron 3855U

MSRP: N/A|Avg: N/A

100%

#194

Pentium Gold 4417U

MSRP: $161|Avg: N/A

100%

#195

Atom N475

MSRP: $75|Avg: N/A

100%

Based on actual market prices and performance synthetic scores.

FPS Benchmarks

Predicted performance for Celeron 3855U across popular games. Tested paired with RTX 4090 to isolate CPU performance.

Technical Analysis

Detailed breakdown of Celeron 3855U specifications and capabilities.

⚡

Processing Power

The Celeron 3855U is a 2-core / 2-thread processor based on the Skylake (2015−2016) architecture, manufactured on a 14 nm process node. It reaches a maximum boost clock of 1.6 GHz from a base frequency of 1.6 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 2 MB of L3 cache, plus 512 kB of L2 cache and 128 kB of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 1,215, placing it in the Entry Level performance tier as a Legacy generation product. Geekbench 6 single-core (the most relevant metric for gaming FPS) records 361, while multi-core reaches 632.

Specification	Celeron 3855U
Cores / ThreadsPhysical/logical processing units	2C / 2T
Max Boost ClockPeak single-core speed under boost	1.6 GHz
Base ClockGuaranteed minimum operating frequency	1.6 GHz
ArchitectureCPU microarchitecture design	Skylake (2015−2016)
Process NodeFabrication technology — smaller = more efficient	14 nm
L3 CacheShared cache — reduces memory latency for all cores	2 MB
L2 CachePer-core fast cache for frequently accessed data	512 kB
L1 CacheUltra-fast per-core cache	128 kB
Die SizePhysical silicon area of the processor	98.57 mm2
Transistor CountMore transistors = more capabilities	1750 Million
Bus SpeedData bus frequency	4 GT/s
Max TemperatureMaximum safe operating temperature (Tjmax)	100 °C
64-bit Support	Yes
Windows 11 Compatible	No
PassMark ScoreOverall multi-threaded benchmark score	1,215
Geekbench 6 SingleSingle-core performance — most relevant for gaming	361
Geekbench 6 MultiMulti-core parallel workload performance	632

🧠

Memory & Platform

The Celeron 3855U fits into the BGA1356 socket and supports PCIe 3.0 with 10 total PCIe lanes for expansion cards and storage. It supports DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600 memory at speeds up to DDR4 2133 MHz (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 32 GB across 2 channels (dual-channel doubles bandwidth). Integrated graphics: Intel HD Graphics 510 — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.

Specification	Celeron 3855U
TypeDesktop or Laptop processor	Laptop
SeriesProduct family	Intel Celeron
SocketMotherboard socket required	BGA1356
PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth	PCIe 3.0
PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion	10
RAM TypeSupported memory standard	DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600
Max RAM SpeedMaximum officially supported memory frequency	DDR4 2133 MHz
Max RAM CapacityMaximum installable memory	32 GB
RAM ChannelsDual-channel doubles bandwidth vs single-channel	2
ECC SupportError-Correcting Code memory — prevents data corruption	No
Integrated GPUBuilt-in graphics processor	Intel HD Graphics 510
Compatible ChipsetsMotherboard chipsets that support this CPU	FCBGA1356
Max CPUs in ConfigMulti-socket support for servers	1 (Uniprocessor)

🔧

Advanced Features

The Celeron 3855U is primarily designed for Budget. Virtualization: true — enables running virtual machines efficiently (important for development and server workloads). Its primary market competitor is the Pentium 3825U.

Specification	Celeron 3855U
Primary Use CaseIntended workload category	Budget
OverclockingWhether CPU clock can be manually increased	🔒 Locked
AVX-512Advanced vector instructions for AI/ML workloads	❌ Not Supported
VirtualizationHardware-assisted virtualization technology	true
Direct CompetitorMarket equivalent from rival manufacturer	Pentium 3825U

🌡️

Power & Cooling

The Celeron 3855U has a rated TDP (Thermal Design Power) of 15 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately. Recommended cooling: Stock (Laptop).

Specification	Celeron 3855U
TDPThermal Design Power — heat output under sustained workload	15 Watt
Max TemperatureMaximum safe junction temperature (Tjmax)	100 °C
Included CoolerStock cooler bundled in the box	No
Recommended CoolerSuggested aftermarket cooling solution	Stock (Laptop)

💰

Value Analysis

It currently holds Rank #193 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #2939 out of all indexed processors.

Specification	Celeron 3855U
Launch PriceOriginal retail price at launch	$107
Cost-Benefit RankPosition in overall value ranking	#193
Performance RankPosition in overall performance ranking	#2939
Release DateLaunch date	15 August 2015 (10 years ago)
Release Year	2015
DesignerArchitecture designer (e.g. Intel, AMD)	Intel