AMD Ryzen AI 5 340 socket: FP8

What the Ryzen AI 5 340 is

The Ryzen AI 5 340 is the consumer 6-core of the Krackan Point family for slim mid-range laptops. Three full-size Zen 5 cores and three compact Zen 5c cores give 12 threads at 2.0 GHz base, with the fast cores boosting to 4.8 GHz and the compact cores to 3.4 GHz. Cache totals 6 MB of L2 plus 16 MB of L3, the same L3 size as the 8-core above it. The chip is built on TSMC 4 nm as a single monolithic die that is smaller than Strix Point, and its default TDP is 28 W inside a 15 to 54 W configurable range.

Graphics come from 4 RDNA 3.5 compute units as Radeon 840M at up to 2900 MHz. That size drives everyday displays, video playback and video calls with ease, while heavier 3D work wants a discrete card. The XDNA 2 NPU reaches up to 50 TOPS, with combined platform throughput up to 59 TOPS. Systems with enough memory earn Copilot+ certification, so background effects, transcription and on-device assistance run on the NPU.

Against the Ryzen AI 7 350 above it, the 340 keeps the same L3 cache and NPU rating with two fewer cores, a smaller GPU and 200 MHz less boost clock. Office work, study, browsing and streaming feel identical on either chip, and the 340 usually ships in cheaper laptops. AMD lists a February 18, 2025 launch date, and mainstream ultrabooks from the major makers carried this APU through that year.

Socket and motherboard compatibility

The chip solders into FP8, the 25 × 40 mm BGA that carries recent AMD mobile generations, so it cannot be removed or swapped after manufacture. Buyers choose a complete laptop with fixed processor, memory and cooling, and service means board replacement. There is no socket lever, no retention bracket and no secondhand upgrade market for the processor itself. The LGA, PGA and BGA: CPU package types explained guide explains how soldered packages differ from socketed ones.

Slim mid-range laptops pair this APU with either socketed DDR5 or soldered LPDDR5X, depending on whether the design favors serviceability or thinness. Firmware and drivers come from the laptop maker, so the support page for the exact laptop model is the reference that matters. Entry gaming designs add a discrete card over the PCIe lanes, while thin designs rely on the integrated Radeon alone.

Memory, PCIe and cooling

Systems pair the 340 with DDR5 SODIMM modules or soldered LPDDR5X, over two channels to 256 GB. DDR5-5600 is the fastest socketed speed AMD lists for the platform, while soldered LPDDR5X reaches 8000 MT/s for extra graphics bandwidth. Four compute units are modest, so a dual-channel memory configuration matters for the best graphics result. Soldered memory sizes freeze at purchase, and Copilot+ features need 16 GB or more in the system.

Expansion comes from 16 usable PCIe Gen4 lanes for NVMe storage and add-on devices. USB4 ports from the SoC handle docking stations, fast external drives and extra displays, with up to four monitors supported from the integrated graphics. Lane splits are fixed per board, so check the laptop specification sheet before assuming a second fast SSD slot.

Cooling spans 15 to 54 W around the 28 W default and belongs to the laptop maker, with heat pipes and fans drawn for the configured TDP of each model. Boost behavior tracks power and temperature on each machine, so the same APU scores differently in a thin ultrabook and a thicker performance chassis. Reviews of the exact laptop model show what sustained performance to expect.

Upgrade paths

Soldered laptop silicon cannot be upgraded, so buyers pick the core count, graphics size and memory at purchase and judge used machines on battery health, memory size and panel quality. The 340 suits buyers who want a modern Copilot+ laptop for office work, study and streaming at a fair price. Buyers who edit video, program with large projects or play 3D games should step to the 8-core above it or to a design with discrete graphics.

The PRO 340 twin shares the die and clocks but adds fleet management features that only IT departments use. A home buyer with one machine gains nothing from the PRO badge and should compare complete laptops on display, keyboard, battery and service options instead. Used buyers should weigh battery condition and memory size first, since neither can be fixed with a processor swap.