AMD Ryzen AI 5 340 vs AMD Ryzen Embedded 9900X Comparison

FAQ

Q: How do the core counts differ between the AMD Ryzen AI 5 340 and the AMD Ryzen Embedded 9900X?

A: The Ryzen AI 5 340 has 6 cores and 12 threads, while the Ryzen Embedded 9900X has 12 cores and 24 threads. This gives the Embedded part twice the multi-threading capacity on paper.

Q: What are the boost clock speeds of each processor?

A: The Ryzen AI 5 340 boosts up to 4.80 GHz, while the Ryzen Embedded 9900X boosts up to 5.60 GHz. The Embedded processor holds a 0.80 GHz advantage in maximum single-thread frequency.

Q: Which processor supports ECC memory?

A: The Ryzen Embedded 9900X supports ECC memory, while the Ryzen AI 5 340 does not. This makes the Embedded part better suited for reliability-focused workloads.

Q: What is the process node for both chips?

A: Both processors are built on TSMC's 4 nm process node. The Ryzen AI 5 340 uses a single 195 mm² die, while the Ryzen Embedded 9900X uses two 70.6 mm² dies.

Q: How do their PCIe capabilities differ?

A: The Ryzen AI 5 340 provides PCIe Gen 4 with 16 lanes (CPU only), whereas the Ryzen Embedded 9900X provides PCIe Gen 5 with 24 lanes (CPU only). The Embedded chip offers both a newer generation and more lanes.

Q: Are benchmark scores available for both processors in the database?

A: The Ryzen AI 5 340 has a full set of recorded benchmark scores, including Cinebench R23, Geekbench, and Passmark results. The Ryzen Embedded 9900X has no recorded benchmark scores in the database, so its comparison is limited to specifications and architectural characteristics.

Where Each One Wins

The Ryzen AI 5 340 is a mobile-focused processor with a 28 W TDP, designed for efficiency in compact systems. Its recorded benchmark data shows a percentile rank of 78 against all CPUs, indicating strong relative performance for its class. It wins in scenarios where power constraints matter, such as thin-and-light laptops or small-form-factor mobile workstations. Its integrated Radeon 840M graphics provide a specific mobile-oriented feature set, and its dual-channel memory bus supports both DDR5 and LPDDR5X memory types, which is a flexibility advantage for portable designs.

The Ryzen Embedded 9900X targets desktop and embedded workloads where raw throughput and expansion capability dominate. It wins on core count (12 versus 6), thread count (24 versus 12), and maximum boost clock (5.60 GHz versus 4.80 GHz). It also supports ECC memory, a critical feature for servers, storage arrays, and industrial computing. Its PCIe Gen 5 interface with 24 lanes doubles the available bandwidth and adds 8 more lanes compared to the Ryzen AI 5 340's Gen 4 x16 setup, which matters for high-speed NVMe storage, accelerators, and network cards. The unlocked multiplier on the Embedded part allows tuning, while the mobile chip is locked.

In benchmark-derived use cases, the Ryzen AI 5 340 demonstrates strong single-thread and multi-thread scores: Cinebench R23 multicore at 12532, Geekbench single-core at 2140, and Passmark single-thread at 3683. These numbers place it in the upper quartile of all CPUs. The Embedded 9900X has no recorded benchmarks in the database, so its wins are projection-based on its specification sheet: more cores, higher clocks, larger L3 cache, and broader PCIe connectivity.

Architecture Differences

Both processors share the Zen 5 architecture generation and are fabricated by TSMC on a 4 nm process. The Ryzen AI 5 340 uses the Krackan Point codename and belongs to the Ryzen AI 300 generation, which incorporates a mix of Zen 5 and Zen 5c cores. It is built as a single die with an area of 195 mm². The Ryzen Embedded 9900X uses the Granite Ridge codename and is built from two chiplets, each measuring 70.6 mm², with a combined transistor count of 16,630 million.

The cache hierarchies differ substantially. Both parts have 80 KB of L1 cache per core and 1 MB of L2 cache per core. The L3 cache, however, is not equal: the Ryzen AI 5 340 has 8 MB of L3, while the Ryzen Embedded 9900X has 64 MB. This 56 MB difference is the largest architectural gap between the two, and it directly impacts workloads with large working sets, such as database processing, compilation, and scientific simulations.

The memory controllers differ in supported memory types. The Ryzen AI 5 340 supports both DDR5 and LPDDR5X, making it flexible for mobile designs. The Ryzen Embedded 9900X supports DDR5 only but adds ECC support. Both run on a dual-channel memory bus with 89.6 GB/s of memory bandwidth, so the raw bandwidth ceiling is identical; the difference lies in memory type flexibility and error correction capability.

The integrated graphics also differ. The Ryzen AI 5 340 uses a Radeon 840M, while the Ryzen Embedded 9900X uses a generic Radeon Graphics solution. The database does not provide detailed specifications for either GPU, but their market positioning suggests the mobile part carries a more performance-oriented iGPU.

Specification Differences

The two processors differ on nearly every core specification. The Ryzen AI 5 340 has 6 cores and 12 threads, a base clock of 2.00 GHz, and a boost clock of 4.80 GHz. The Ryzen Embedded 9900X has 12 cores and 24 threads, a base clock of 4.40 GHz, and a boost clock of 5.60 GHz. The Embedded part runs at a 2.40 GHz higher base clock and a 0.80 GHz higher boost clock.

Power and socket differ completely. The Ryzen AI 5 340 has a TDP of 28 W and uses AMD Socket FP8, a mobile platform. The Ryzen Embedded 9900X has a TDP of 120 W and uses AMD Socket AM5, a desktop platform. The production status for both is Active.

Memory support diverges: the Ryzen AI 5 340 supports DDR5 and LPDDR5X, while the Ryzen Embedded 9900X supports DDR5 only. ECC memory is supported only on the Embedded chip. PCIe capability differs as well: Gen 4 with 16 lanes on the mobile part versus Gen 5 with 24 lanes on the Embedded part.

The Ryzen AI 5 340 has a locked multiplier and a release date of 2025-01-05. The Ryzen Embedded 9900X has an unlocked multiplier and a release date of 2025-10-06. The part numbers are 100-000001602 for the mobile chip and 100-000000662E for the Embedded chip. The Embedded processor belongs to the 9000 series, while the mobile processor has no series designation.

Head-to-Head Benchmarks

Direct head-to-head benchmark results are not recorded in the database, so the comparison relies on the Ryzen AI 5 340's absolute scores and the Embedded 9900X's specification-derived expectations.

The Ryzen AI 5 340 delivers a Cinebench R23 multicore score of 12532 and a single-core score of 1915.5. In Geekbench, it scores 9165 multicore and 2140 single-core. These figures place it at the 78th percentile among all CPUs, with an average benchmark score of 25981. Its nearest rivals in the database include the Intel Core i7-14701TE (average score 26013, delta -0.1 percent), the AMD Ryzen 5 8640HS (average score 26106, delta -0.5 percent), the AMD Ryzen 5 PRO 5655GE (average score 25880, delta +0.4 percent), and the Intel Core i7-11700K (average score 25812, delta +0.7 percent). This places the Ryzen AI 5 340 within a tight band of mid-range desktop and mobile processors, slightly behind the Ryzen 5 8640HS and slightly ahead of the Ryzen 5 PRO 5655GE.

In Passmark tests, the Ryzen AI 5 340 scores 63078 in integer math, 39967 in floating-point math, 19506 in multithread, and 3683 in single-thread. It also posts 229796 in data compression, 11470 in data encryption, 16440 in extended instructions, and 24970 in random string sorting. The physics test shows 1095, and the find prime numbers test shows 72.

Against the Ryzen Embedded 9900X, the Ryzen AI 5 340 would likely trail in multi-threaded workloads given that the Embedded part has twice the cores and threads, a higher base clock, and a higher boost clock. The Embedded chip also has 8 times the L3 cache (64 MB versus 8 MB), which would favor it in cache-sensitive tasks. Single-thread performance is harder to project without recorded benchmarks, but the Embedded part's 5.60 GHz boost clock gives it a clock advantage that likely translates to higher peak performance in lightly threaded tasks. The Ryzen AI 5 340's only confirmed wins are in power efficiency, memory flexibility, and mobile integration, all of which are specification-level advantages rather than benchmark-derived ones.