Celeron 3955U

Details and Benchmarks for Intel Celeron 3955U

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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 3955U based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,278 Rank: 1551
Rank Name Score Visual
1547 Athlon II X2 255 4,281
+0.1%
1548 A4-5300B 4,281
+0.1%
1549 Phenom II X4 830 4,279
+0%
1550 Core 2 Quad Q9550 4,279
+0%
1551 Celeron 3955U 4,278
1552 Core i3-2328M 4,277
+-0%
1553 A8-3850 4,277
+-0%
1554 Core i5-540M 4,276
+-0%
1555 Phenom II X4 B95 4,276
+-0%
1556 A10-5757M 4,275
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Celeron 3955U based on multi-threaded benchmark results.

4,331 Rank: 1646
Rank Name Score Visual
1642 A6-3410MX 4,332
+0%
1643 E2-9010 4,332
+0%
1644 Pentium 3825U 4,332
+0%
1645 A8-6410 4,332
+0%
1646 Celeron 3955U 4,331
1647 Core i3-2330M 4,331
+0%
1648 Atom x7-Z8700 4,331
+0%
1649 Pentium E5800 4,331
+0%
1650 A6-3500 4,331
+0%
1651 Core i3-4012Y 4,331
+0%

View full ranking →

Singlecore Score

Single-core performance score for Celeron 3955U based on single-threaded benchmark results.

4,243 Rank: 1534
Rank Name Score Visual
1530 Athlon II X2 255 4,252
+0.2%
1531 Core 2 Quad Q8300 4,248
+0.1%
1532 Phenom II X2 555 4,246
+0.1%
1533 Core i3-2370M 4,244
+0%
1534 Celeron 3955U 4,243
1535 Intel Core i5-580M 4,242
+-0%
1536 Xeon L5420 4,241
+-0%
1537 Intel Core i7-720QM 4,240
-0.1%
1538 A10-5750M 4,240
-0.1%
1539 Phenom II X4 945 4,239
-0.1%

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 3955U based on integer math, floating point math, and prime number computation benchmarks.

4,501 Rank: 1522
Rank Name Score Visual
1518 Phenom II X2 560 4,502
+0%
1519 Pentium 3805U 4,502
+0%
1520 Celeron 2980U 4,502
+0%
1521 A6-5357M 4,502
+0%
1522 Celeron 3955U 4,501
1523 Core i7-2610UE 4,501
+0%
1524 Athlon II X3 435 4,501
+0%
1525 Xeon W3503 4,501
+0%
1526 A4-5300B 4,501
+0%
1527 Celeron 4305U 4,501
+0%

View full ranking →

Data Processing

Aggregated score for Celeron 3955U based on data encryption, data compression, and string sorting benchmarks.

4,463 Rank: 1580
Rank Name Score Visual
1576 Pentium E6300 4,464
+0%
1577 Pentium E5500 4,464
+0%
1578 Pentium G640T 4,464
+0%
1579 Core i3-350M 4,464
+0%
1580 Celeron 3955U 4,463
1581 Core i5-2537M 4,463
+0%
1582 Celeron G530 4,463
+0%
1583 Athlon II X2 240 4,463
+0%
1584 Core i5-4210Y 4,463
+0%
1585 A4-3400 4,463
+0%

View full ranking →

Physics & Compute

Aggregated score for Celeron 3955U based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,488 Rank: 1481
Rank Name Score Visual
1477 A6-9500 4,489
+0%
1478 Celeron G1610T 4,489
+0%
1479 Phenom II X3 B73 4,489
+0%
1480 Phenom II X3 700e 4,489
+0%
1481 Celeron 3955U 4,488
1482 Athlon II X3 450 4,488
+0%
1483 Xeon W3505 4,488
+0%
1484 A8-7100 4,488
+0%
1485 Core i3-4012Y 4,488
+0%
1486 Core i5-540M 4,488
+0%

View full ranking →

Celeron 3955U Details

The Intel Celeron 3955U is a budget-oriented mobile processor from Intel's Skylake-U lineup, designed for entry-level laptops and thin-and-light systems where power efficiency and cost are prioritized over raw performance. Released in 2016, this chip is now over seven years old, placing it firmly in the category of legacy hardware. While it no longer competes with modern processors in terms of speed or feature set, it remains a functional option for basic computing tasks such as web browsing, office applications, and light multimedia consumption.

Based on the Skylake microarchitecture and fabricated on a 14 nm process, the Celeron 3955U features two cores and two threads, running at a base frequency of 2.0 GHz with no turbo boost capability. It includes 2 MiB of L3 cache, 0.5 MiB of L2 cache, and 0.125 MiB of L1 cache, split into 64 KiB for data and 64 KiB for instructions. The processor operates at a TDP of 15 W, with a configurable down to 10 W, making it suitable for low-power devices. It supports DDR4-2133, LPDDR3-1866, and DDR3L-1600 memory across two channels, with a maximum memory capacity of 32 GiB and a peak bandwidth of 31.79 GiB/s. The chip is packaged in a BGA-1356 format and uses the FCBGA-1356 socket.

Integrated graphics are provided by the Intel HD Graphics 510, which includes 12 execution units and a maximum frequency of 900 MHz. This GPU supports up to three displays and can handle basic video playback and light gaming, though it is not suited for modern 3D applications. The processor also supports a range of Intel technologies, including Intel VT-x and VT-d virtualization, AES-NI encryption, AVX2, and Intel Enhanced SpeedStep for power management. Despite its age, the Celeron 3955U retains support for 64-bit computing, MMX, SSE, and other x86-64 extensions.

In benchmark testing, the Celeron 3955U achieves an overall score of 4278, placing it at #1551 out of 2060 processors in the PassMark rankings. Its single-core score of 4243 ranks it #1534, while its multicore score of 4331 lands at #1646. These results indicate that the processor performs roughly in line with mid-range CPUs from the mid-2010s, such as the Core i3-2370M and Phenom II X2 555, but trails significantly behind current-generation hardware. In the top 50 overall performance list, the Celeron 3955U is far from competitive, with the highest-ranked processor scoring over twice as much.

Given its age and modest performance, the Celeron 3955U is best suited for users who need a low-cost, energy-efficient system for basic computing tasks. It is not appropriate for demanding applications such as video editing, gaming, or virtualization. As of March 2026, this processor serves as a reminder of a bygone era in mobile computing, where performance was traded for affordability and battery life.
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Intel Celeron 3955U

Main Specifications

Designer: Intel
Name: Celeron 3955U
Family: Celeron
Series: 3000
Model Number: 3955U
Cores: 2
Threads: 2
Base Frequency: 2000 MHz
Clock Multiplier: 20x (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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