Celeron 3855U

Details and Benchmarks for Intel Celeron 3855U

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Celeron 3855U based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,087 Rank: 1810
Rank Name Score Visual
1806 Core i3-2357M 4,094
+0.2%
1807 Pentium 967 4,090
+0.1%
1808 Athlon 64 X2 5400+ 4,089
+0%
1809 Core 2 Duo P7570 4,088
+0%
1810 Celeron 3855U 4,087
1811 E2-9000 4,087
+0%
1812 Celeron 3205U 4,086
+-0%
1813 Core 2 Duo E6550 4,084
-0.1%
1814 Xeon E5504 4,083
-0.1%
1815 Core i5-4200Y 4,082
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Celeron 3855U based on multi-threaded benchmark results.

4,297 Rank: 1764
Rank Name Score Visual
1760 E2-6110 4,299
+0%
1761 Core 2 Duo P9600 4,298
+0%
1762 A4-6210 4,298
+0%
1763 Sempron 3850 4,298
+0%
1764 Celeron 3855U 4,297
1765 Core i3-6006U 4,297
+0%
1766 Pentium G645 4,297
+0%
1767 Xeon E5506 4,297
+0%
1768 Intel Atom x5-E8000 4,296
+-0%
1769 Celeron 1000M 4,296
+-0%

View full ranking →

Singlecore Score

Single-core performance score for Celeron 3855U based on single-threaded benchmark results.

3,947 Rank: 1797
Rank Name Score Visual
1793 Core 2 Duo L9400 3,955
+0.2%
1794 Xeon E5320 3,952
+0.1%
1795 Intel Pentium P6300 3,948
+0%
1796 FX-7500 3,948
+0%
1797 Celeron 3855U 3,947
1798 Celeron 3205U 3,947
+0%
1799 Athlon 64 X2 5400+ 3,947
+0%
1800 Intel Core i3-330M 3,946
+-0%
1801 Celeron 900 3,946
+-0%
1802 Athlon 64 X2 5600+ 3,946
+-0%

View full ranking →

Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Celeron 3855U based on integer math, floating point math, and prime number computation benchmarks.

4,496 Rank: 1559
Rank Name Score Visual
1555 Pentium J2900 4,497
+0%
1556 Core i3-350M 4,497
+0%
1557 Phenom II X2 B57 4,497
+0%
1558 Celeron 4205U 4,497
+0%
1559 Celeron 3855U 4,496
1560 Celeron G530 4,496
+0%
1561 Pentium E6700 4,496
+0%
1562 Pentium E6600 4,496
+0%
1563 Pentium 2127U 4,496
+0%
1564 A6-9220 4,496
+0%

View full ranking →

Data Processing

Aggregated score for Celeron 3855U based on data encryption, data compression, and string sorting benchmarks.

4,452 Rank: 1642
Rank Name Score Visual
1638 E2-3800 4,454
+0%
1639 Celeron 1005M 4,453
+0%
1640 Core i3-4012Y 4,453
+0%
1641 A4-9120 4,453
+0%
1642 Celeron 3855U 4,452
1643 Core i3-2377M 4,452
+0%
1644 Celeron 3965Y 4,452
+0%
1645 Celeron B840 4,452
+0%
1646 A6-9210 4,452
+0%
1647 Pentium 2127U 4,452
+0%

View full ranking →

Physics & Compute

Aggregated score for Celeron 3855U based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,479 Rank: 1540
Rank Name Score Visual
1536 Celeron B840 4,480
+0%
1537 Athlon II X3 425 4,480
+0%
1538 Pentium 2127U 4,480
+0%
1539 A8-3550MX 4,480
+0%
1540 Celeron 3855U 4,479
1541 Core i3-2365M 4,479
+0%
1542 A6-6400K 4,479
+0%
1543 A4-6320 4,479
+0%
1544 A8-7410 4,479
+0%
1545 Celeron 1000M 4,479
+0%

View full ranking →

Celeron 3855U Details

Built on Intel's Skylake microarchitecture and manufactured using a 14 nm process, the Celeron 3855U represents an older generation of mobile processors that were released several years ago. As of March 2026, it is no longer competitive in the modern computing landscape, particularly when compared to today’s top-tier CPUs. Designed for low-power mobile devices, this processor is part of Intel’s Celeron lineup, which targets budget-conscious users and entry-level computing needs. Its modest performance and limited feature set reflect its position as a value-oriented solution rather than a high-performance option.

The Celeron 3855U features two cores and two threads, operating at a base clock speed of 1.6 GHz with no turbo boost capability. It includes 0.125 MiB of L1 cache, 0.5 MiB of L2 cache, and 2 MiB of shared L3 cache. The processor supports DDR4-2133, LPDDR3-1866, and DDR3L-1600 memory types, with a maximum memory capacity of 32 GiB and a peak memory bandwidth of 31.79 GiB/s. With a TDP of 15 W and a downclocked power state of 10 W, the chip emphasizes energy efficiency over raw performance, making it suitable for light-duty laptops and ultrabooks.

Integrated into the processor is Intel’s HD Graphics 510 GPU, which features 12 execution units and a base frequency of 300 MHz, capable of boosting up to 900 MHz. This GPU supports up to three display outputs and is adequate for basic multimedia playback and light graphical tasks, though it falls far short of modern integrated graphics solutions. The processor is packaged in a BGA form factor, specifically FCBGA-1356, and uses the Socket BGA1356 interface, which is common in thin and light mobile systems.

In terms of supported features, the Celeron 3855U includes a range of Intel technologies such as AES-NI, AVX2, and Intel VT-x for virtualization, along with Intel SpeedStep and Enhanced SpeedStep for dynamic power management. However, it lacks support for ECC memory and advanced security features like Intel SGX, which limits its suitability for enterprise environments. The processor also supports up to 10 PCIe lanes, allowing for basic expansion options.

Benchmark data shows the Celeron 3855U scoring 4087 overall, 3947 in single-core, and 4297 in multi-core performance. These results place it at rank #1810 of 2060 in overall performance, with single-core and multi-core ranks of #1797 and #1764 respectively. While its multicore performance is slightly better than its single-core score, both are far behind contemporary processors. It is outperformed by many budget and mid-range CPUs from both Intel and AMD, including the Celeron 1000M and the A4-4000, and it ranks below the top 50 in all three benchmark categories.

In conclusion, the Celeron 3855U is best suited for basic computing tasks such as web browsing, office applications, and media playback. Its low power consumption makes it a viable option for lightweight laptops, but its outdated architecture and limited capabilities render it obsolete for modern workloads. As of 2026, it serves as a historical example of Intel’s efforts to deliver affordable mobile computing, but it is no longer recommended for users seeking performance or future-proofing.
Frequently Compared

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Intel Celeron 3855U

Main Specifications

Designer: Intel
Name: Celeron 3855U
Family: Celeron
Series: 3000
Model Number: 3855U
Cores: 2
Threads: 2
Base Frequency: 1600 MHz
Clock Multiplier: 16x (locked)
Microarchitecture: Skylake
Core Name: Skylake
Core Family: 6
Core Model: 78
Package: FCBGA-1356
Target Segment: Mobile
Max CPUs: 1
TDP: 15 W
Release Price: $107.00

Cache Specifications

L1 Cache: 128 KiB
L1 Instruction Cache: 64 KiB (8-way set associative)
L1 Data Cache: 64 KiB (8-way set associative)
L2 Cache: 0.5 MiB (4-way set associative)
L3 Cache: 2 MiB

Memory Specifications

Supported Memory Type: DDR4-2133 LPDDR3-1866 and DDR3L-1600
Memory Channels: 2
Maximum Memory: 32 GB
Maximum Bandwidth: 31.79 GB/s
ECC Support: No

Integrated Graphics

GPU: HD Graphics 510
GPU Designer: Intel
GPU Max Frequency: 900 MHz
Execution Units: 12

Physical Specifications

Process: 14 nm
Die Area: 98.57 mm²
Transistor Count: 1.75 billion
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 ABM BMI1 BMI2 FMA3 AES RdRand ADX CLMUL F16C x86-16 x86-32 x86-64 Real Protected SMM FPU NX HT TBT 2.0 EIST TXT vPro VT-x VT-d EPT SGX Secure Key IPT TSX Flex Memory MWT ISRT
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