Intel® Celeron® 3955U

The Intel Celeron 3955U is a laptop processor with 2 cores and 2 threads, built on the Skylake architecture. It launched in Oct 2015. A 2-MB L3 cache backs the cores (1.3 MB per core). It addresses DDR4, LPDDR3 memory up to 32 GB across 2 channels. The chip drops into the FCBGA1356 socket and exposes PCIe 3.0 (12 lanes). Rated TDP is 15 W. Notable platform capabilities: Extended Page Tables (EPT).

The Intel Celeron 3955U scores 1,142 in single-core performance and 1,456 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 1,289 for overall performance, 2,545 for productivity performance, 2,856 for creator performance, 1,356 for engineering performance and 3,790 for gaming performance. Its multi-core throughput works out to 728 per core, 728 per thread and 97 per watt. Its computed efficiency index is 333. Its performance index is 16, so its overall performance is 84% below the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the Intel Celeron 3955U scores 4,011 in integer math, 3,485 in floating-point math, 21,503 in compression, 454 in cryptography, 159 in physics simulation, 774 in vector SIMD, 9 in the prime sieve and 2,706 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 93% below in integer math, 92% below in floating-point math, 91% below in compression, 96% below in cryptography, 85% below in physics simulation, 95% below in vector SIMD, 87% below in the prime sieve and 88% below in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The Intel Celeron 3955U has 2 physical cores and runs 2 logical threads. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 2.00 GHz.

The Intel Celeron 3955U is a laptop processor, belongs to the Intel Celeron family, uses the Skylake architecture, carries the codename Skylake and is manufactured on a 14 nm process. It launched in Oct 2015.

The Intel Celeron 3955U has 128 KB of L1 cache, 512 KB of L2 cache and 2 MB of L3 cache. That adds up to about 2.6 MB of cache, or 1.31 MB per core. Each core has 256 KB of private L2 cache.

The Intel Celeron 3955U has a 3-level cache hierarchy: L1 at 128 KB, L2 at 512 KB and L3 at 2 MB. L3 is the largest level and makes up about 76% of the cache listed here.

The Intel Celeron 3955U supports DDR4, LPDDR3 memory, addresses up to 32 GB of memory and uses 2 memory channels. It does not support DDR5 memory.

The Intel Celeron 3955U includes integrated graphics (Intel HD Graphics 510) and clocks the graphics up to 0.90 GHz.

The Intel Celeron 3955U uses the FCBGA1356 socket, supports PCI Express 3.0 and provides up to 12 PCIe lanes.

The Intel Celeron 3955U has a rated TDP of 15 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The Intel Celeron 3955U is manufactured by Intel. It launched at a price of $107.

The Intel Celeron 3955U is also identified by the model number 3955U.

Feex has recorded 59% of the specifications it tracks for the Intel Celeron 3955U. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Performance Cores, Efficiency Cores, Hybrid Architecture, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L4 Cache. Memory Support: Memory Bandwidth, ECC Memory and Max Memory Speed. Graphics: Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count and Foundry. Naming & Aliases: Normalized Name, SKU, Processor Number and Part Number.

Processors that use the same FCBGA1356 socket as the Intel Celeron 3955U and have the closest multi-core scores in the Feex database include Intel Celeron 3867U, Intel Celeron 3865U, Intel Celeron 3855U, Intel Celeron 3965U and Intel Pentium 4405U.