AMD Ryzen AI 7 345 socket: FP8

What the Ryzen AI 7 345 is

The Ryzen AI 7 345 is a 6-core Krackan Point part with an unusual core split. Two full-size Zen 5 cores and four compact Zen 5c cores give 12 threads at 2.0 GHz base, with the fast cores boosting to 4.6 GHz and the compact cores to 3.4 GHz. Cache totals 6 MB of L2 plus 8 MB of L3, which is half the L3 of the Ryzen AI 5 340. The chip is built on TSMC 4 nm as a single monolithic die, 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, the same GPU size as the 340. Everyday displays, video playback and video calls run comfortably on the integrated graphics, 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 and on-device assistance run on the NPU.

Against the older Ryzen AI 5 340, the 345 trades boost clock, full-size cores and half the L3 cache for its place in the stack, so buyers should compare complete laptops rather than assuming a higher tier number means higher speed. Single-threaded bursts favor the 340, while threaded office work is close between them. AMD lists a January 15, 2025 launch date, and this SKU appeared in value oriented laptops where the Ryzen AI 7 name carried shelf weight.

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.

Value oriented laptops pair this APU with cost sensitive boards, often with socketed DDR5 for serviceability. Firmware and drivers come from the laptop maker, so the support page for the exact laptop model is the reference that matters. Fourteen usable PCIe Gen4 lanes are enough for a fast boot SSD plus card readers and networking, so check the board layout before assuming room for more.

Memory, PCIe and cooling

Systems pair the 345 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 14 usable PCIe Gen4 lanes for NVMe storage and add-on devices, two fewer than the 16-lane Krackan SKUs above it. 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 mainstream buyers should confirm the SSD and port layout in the laptop specification sheet.

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 345 suits buyers who find it in a well priced laptop with a good screen and enough memory. Buyers choosing between two machines should weigh the whole package, since the older 6-core 340 can outrun it in single-threaded bursts.

Shoppers should read the specification sheet instead of trusting the tier number alone. The Ryzen AI 5 340 keeps more L3 cache and a higher boost clock, while the 345 keeps the Ryzen AI 7 name and the same NPU. Compare complete laptops on display, keyboard, battery and service options, which decide daily experience more than the APU badge.