The AMD Ryzen AI 5 340 is a powerful mobile processor from the Krakan Point family that was announced at CES in early 2025. The APU integrates 6 CPU cores (3x Zen 5 with up to 4.8 GHz and 3x Zen 5c with less cache and a maximum of 3.4 GHz) and a big 16 MB L3-Cache.
Architecture and features
The Krackan Point family APUs are powered by Zen 5 and Zen 5c microarchitecture cores located in separate clusters, the latter being a slightly slower, smaller and more energy efficient version of the former. One of the differences between Zen 5 and Zen 5c is the size of the cache; the Zen 5 cores have larger caches available.
However, the mobile Zen 5 implementation is reportedly (ChipsAndCheese) is closer to desktop Zen 4 than desktop Zen 5 due to the different cache sizes, large differences in AVX-512 throughput, and other factors.
Elsewhere, the Ryzen AI 5 chip supports DDR5-5600 and LPDDR5x-8000 RAM, giving system designers a choice between lower latency and higher throughput. The chip is natively compatible with USB 4 (and therefore Thunderbolt). It has PCIe 4.0 support for a throughput of 1.9 GB/s per lane, just like its 8000 series predecessors. The integrated XDNA 2 NPU, which is much more complex than the first generation XDNA, delivers up to 50 INT8 TOPS for accelerating various AI workloads.
As usual with laptop CPUs, the Ryzen 5 AI chip cannot be replaced by the user as it is soldered.
Performance
Thanks to the Zen 5 architecture and the high clock rates, the CPU performance should be very good.
Graphics
The Radeon 840M is a downscaled Radeon 890M that offers only 4 cores (CUs = 256 shaders) and clocks at up to 2.9 GHz. It uses the new RDNA 3.5 architecture.
Power consumption
The AI 340 is said to have a base TDP of 28 W, although laptop manufacturers are free to set the TDP between 15 and 54 W.
The 4 nm TSMC process with which these CPUs are manufactured ensures above-average energy efficiency.
| Codename | Krackan Point (Zen 5) |
| Clock Rate | 2000 - 4800 MHz |
| Level 2 Cache | 6 MB |
| Level 3 Cache | 16 MB |
| Number of Cores / Threads | 6 / 12 3 x 4.8 GHz AMD Zen 5 3 x 3.4 GHz AMD Zen 5c |
| Power Consumption (TDP = Thermal Design Power) | 28 Watt |
| TDP Turbo PL2 | 54 Watt |
| Manufacturing Technology | 4 nm |
| Socket | FP8 |
| Features | DDR5-5600/LPDDR5x-8000 RAM, PCIe 4, USB 4, XDNA 2 NPU (50 TOPS), Secure Processor, SMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A |
| GPU | AMD Radeon 840M ( - 2900 MHz) |
| 64 Bit | 64 Bit support |
| Architecture | x86 |
| Announcement Date | 01/06/2025 |
| Product Link (external) | www.amd.com |
- Average benchmark values
Dell 14 Plus 2-in-1, Ryzen AI 5 340: AMD Radeon 840M, 14.00", 1.6 kg
External Review » Dell 14 Plus 2-in-1, Ryzen AI 5 340
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