AMD® Ryzen™ 5 40

The AMD Ryzen 5 40 is a laptop processor with 4 cores and 8 threads, built on the Zen 2 architecture (6 nm process). It launched in Oct 2025. Clocks run from 2.8 GHz base to 4.3 GHz boost. A 4-MB L3 cache backs the cores (1.6 MB per core). It addresses LPDDR5 memory up to 16 GB across 2 channels. The chip drops into the FT6 socket and exposes PCIe 3.0 (4 lanes). Rated TDP is 15 W.

The AMD Ryzen 5 40 scores 2,462 in single-core performance and 9,317 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 4,789 for overall performance, 9,503 for productivity performance, 9,556 for creator performance, 8,968 for engineering performance and 9,715 for gaming performance. Its multi-core throughput works out to 2,329 per core, 1,165 per thread and 621 per watt. Its computed efficiency index is 1,237. Its performance index is 59, so its overall performance is 41% 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 AMD Ryzen 5 40 scores 31,577 in integer math, 15,198 in floating-point math, 140,441 in compression, 6,583 in cryptography, 432 in physics simulation, 6,386 in vector SIMD, 20 in the prime sieve and 15,098 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 46% below in integer math, 67% below in floating-point math, 38% below in compression, 43% below in cryptography, 60% below in physics simulation, 59% below in vector SIMD, 70% below in the prime sieve and 33% 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 AMD Ryzen 5 40 has 4 physical cores and runs 8 logical threads. It runs 2 threads per core. It runs at a base clock of 2.80 GHz and boosts up to 4.30 GHz.

The AMD Ryzen 5 40 is a laptop processor, belongs to the AMD Ryzen 5 family, uses the Zen 2 architecture, carries the codename Mendocino and is manufactured on a 6 nm process. It launched in Oct 2025.

The AMD Ryzen 5 40 has 256 KB of L1 cache, 2 MB of L2 cache and 4 MB of L3 cache. That adds up to about 6.3 MB of cache, or 1.56 MB per core. Each core has 512 KB of private L2 cache.

The AMD Ryzen 5 40 has a 3-level cache hierarchy: L1 at 256 KB, L2 at 2 MB and L3 at 4 MB. L3 is the largest level and makes up about 64% of the cache listed here.

The AMD Ryzen 5 40 supports LPDDR5 memory, addresses up to 16 GB of memory, uses 2 memory channels and runs memory at up to 5,500 MT/s. It does not support DDR5 and DDR4 memory.

The AMD Ryzen 5 40 includes integrated graphics.

The AMD Ryzen 5 40 uses the FT6 socket, supports PCI Express 3.0 and provides up to 4 PCIe lanes.

The AMD Ryzen 5 40 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 AMD Ryzen 5 40 is manufactured by TSMC.

Feex has recorded 56% of the specifications it tracks for the AMD Ryzen 5 40. 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 and ECC Memory. Graphics: Graphics Base Clock, Graphics Max 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 and Launch Price. Naming & Aliases: Normalized Name, SKU, Model Number, Processor Number and Part Number.

Processors close to the AMD Ryzen 5 40 in the Feex database, matched by socket, family, segment, architecture, core count, TDP and benchmark scores, include AMD Ryzen 3 30, AMD Ryzen 3 7320C, AMD Ryzen 5 PRO 8540U, AMD Ryzen 5 PRO 8640HS and AMD Ryzen 5 PRO 8640U.