Intel® Core™ Ultra 7 355

The Intel Core Ultra 7 355 is a laptop processor with 8 cores and 8 threads, built on the Panther Lake architecture. It launched in Jan 2026. Clocks run from 2.3 GHz base to 4.7 GHz boost. A 12-MB L3 cache backs the cores (1.9 MB per core). It addresses LPDDR5X, DDR5 memory up to 128 GB across 2 channels. The chip drops into the FCBGA2540 socket and exposes PCIe 5.0 (12 lanes). Rated TDP is 25 W. Notable platform capabilities: Extended Page Tables (EPT), Control-flow Enforcement (CET).

The Intel Core Ultra 7 355 scores 4,128 in single-core performance and 20,997 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 9,310 for overall performance, 19,427 for productivity performance, 18,979 for creator performance, 21,522 for engineering performance and 17,633 for gaming performance. Its multi-core throughput works out to 2,625 per core, 2,625 per thread and 840 per watt. Its computed efficiency index is 1,862. Its performance index is 115, so its overall performance is 15% above 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 Core Ultra 7 355 scores 44,177 in integer math, 60,501 in floating-point math, 184,700 in compression, 14,688 in cryptography, 1,885 in physics simulation, 17,048 in vector SIMD, 188 in the prime sieve and 23,269 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 25% below in integer math, 32% above in floating-point math, 19% below in compression, 28% above in cryptography, 73% above in physics simulation, 10% above in vector SIMD, 181% above in the prime sieve and 3% above 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 Core Ultra 7 355 has 8 physical cores and runs 8 logical threads. It does not use a hybrid performance and efficiency core layout. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 2.30 GHz and boosts up to 4.70 GHz.

The Intel Core Ultra 7 355 is a laptop processor, belongs to the Intel Core Ultra 7 family, uses the Panther Lake architecture, carries the codename Panther Lake and is manufactured on a 2 nm process. It launched in Jan 2026.

The Intel Core Ultra 7 355 has 832 KB of L1 cache, 2 MB of L2 cache and 12 MB of L3 cache. That adds up to about 14.8 MB of cache, or 1.85 MB per core.

The Intel Core Ultra 7 355 has a 3-level cache hierarchy: L1 at 832 KB, L2 at 2 MB and L3 at 12 MB. L3 is the largest level and makes up about 81% of the cache listed here.

The Intel Core Ultra 7 355 supports LPDDR5X, DDR5 memory, addresses up to 128 GB of memory and uses 2 memory channels. It does not support DDR4 memory.

The Intel Core Ultra 7 355 includes integrated graphics (Intel Graphics) and clocks the graphics up to 2.50 GHz.

The Intel Core Ultra 7 355 uses the FCBGA2540 socket, supports PCI Express 5.0 and provides up to 12 PCIe lanes.

The Intel Core Ultra 7 355 has a rated TDP of 25 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 Core Ultra 7 355 is also identified by the model number 355.

Feex has recorded 59% of the specifications it tracks for the Intel Core Ultra 7 355. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L2 Cache (per Core) and L4 Cache. Memory Support: Memory Bandwidth, ECC Memory and Max Memory Speed. Graphics: Graphics Base Clock, 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, Foundry and Launch Price. Naming & Aliases: SKU, Processor Number and Part Number.

Processors that use the same FCBGA2540 socket as the Intel Core Ultra 7 355 and have the closest multi-core scores in the Feex database include Intel Core Ultra 7 365, Intel Core Ultra 5 325, Intel Core Ultra 5 335, Intel Core Ultra 5 322 and Intel Core Ultra 5 332.