AMD Ryzen AI 7 345 vs AMD Ryzen Embedded 9900X Comparison

Where Each One Wins

The recorded data presents a sharply divided picture between these two AMD processors. The AMD Ryzen AI 7 345 is the only one of the pair with a completed benchmark suite in the database, and it posts a strong showing in every recorded test. Its average benchmark score of 29461 places it in the 81st percentile of all CPUs tracked. This is a mobile part, built for the AMD Socket FP8, with a 28 watt TDP, and it clearly delivers competitive results across both single-threaded and multi-threaded workloads.

The AMD Ryzen Embedded 9900X, on the other hand, has no recorded benchmark scores in the database. Its average benchmark score is listed as 0, its percentile versus all CPUs is 50, and its nearest rivals list is empty. This does not mean the chip is slow, only that the database contains no measured performance data for it. What the database does record is a specification sheet that points to a much larger and more capable desktop part. It uses 12 cores and 24 threads, double the core count of the Ryzen AI 7 345, with a base clock of 4.40 GHz and a boost clock of 5.60 GHz. Its TDP of 120 watts is more than four times higher, and it uses the desktop AMD Socket AM5.

Given the absence of benchmark scores for the Embedded 9900X, the win split in the database is zero for each side. However, the specification data allows for a clear qualitative distinction. The Ryzen AI 7 345 wins in the mobile efficiency segment, as it is the only one with recorded performance data and it achieves an 81st percentile ranking. The Ryzen Embedded 9900X wins in raw architectural capacity, offering double the cores, double the threads, and a substantially larger L3 cache, which should give it an advantage in heavily threaded desktop workloads if the benchmark data were present.

The Verdict

The selection between these two processors depends entirely on whether the workload is mobile or desktop. The database shows the AMD Ryzen AI 7 345 as a functional, measured mobile processor. Its 6 cores and 12 threads, combined with a 4.60 GHz boost clock and a 28 watt TDP, make it suitable for laptop-class systems. Its benchmark results, including a Cinebench R23 multi-core score of 11461 and a single-core score of 1818, indicate a balanced performer that sits in the 81st percentile of all CPUs. This is the only chip of the two with any performance validation in the database.

The AMD Ryzen Embedded 9900X is a desktop part with no measured performance. Its specification sheet is impressive: 12 cores, 24 threads, a 5.60 GHz boost clock, a 64 MB L3 cache, and PCIe Gen 5 support with 24 lanes. It also supports ECC memory, which the Ryzen AI 7 345 does not. These factors position it for embedded desktop applications where multi-threaded throughput and memory reliability are priorities. The data cannot confirm actual performance, but the core count and cache size alone imply a significantly higher multi-threaded ceiling than the mobile part.

For a laptop or low-power compact system, the Ryzen AI 7 345 is the only choice with verified results. For a desktop or embedded server-style workload where the socket and power envelope allow a 120 watt part, the Ryzen Embedded 9900X offers double the cores and a larger cache, which the data suggests will translate to higher multi-threaded performance, though that remains unmeasured.

Head-to-Head Benchmarks

The head-to-head benchmark table in the database is empty, so there are no direct comparison scores between the two parts. The only measurable data comes from the Ryzen AI 7 345, which stands alone. Its Cinebench R23 multi-core score of 11461 and single-core score of 1818 provide a reference point for mobile performance. The Cinebench R15 results, 1712 multi-core and 271 single-core, follow the same pattern. In PassMark tests, the Ryzen AI 7 345 records a multi-thread score of 19927, a single-thread score of 3875, and a floating point math score of 42621. Its integer math score is 63475, and its extended instructions score is 17003.

The nearest rivals for the Ryzen AI 7 345 offer context for its standing. The AMD Ryzen 7 3800X has an average score of 29447, which is essentially identical to the Ryzen AI 7 345's 29461, a delta of 0 percent. The AMD EPYC 9654 sits at 29409, a 0.2 percent difference. The Intel Core i5-13500HX scores 29270, which is 0.7 percent lower. The AMD Ryzen 7 PRO 5755GE scores 29656, which is 0.7 percent higher. These narrow deltas indicate that the mobile Ryzen AI 7 345 performs in the same tier as several established desktop and high-end mobile processors, despite its lower core count and power envelope.

For the Ryzen Embedded 9900X, no such comparisons exist in the database. Any head-to-head analysis is therefore limited to specification-based inference. The 12-core, 24-thread configuration with a 5.60 GHz boost clock and 64 MB of L3 cache would likely place it well above the Ryzen AI 7 345 in multi-threaded tests, but the database does not contain the numbers to prove it. The single-thread performance may also be higher, given the 1.0 GHz higher boost clock, but again, no data confirms this.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Embedded 9900X has 12 cores and 24 threads. The AMD Ryzen AI 7 345 has 6 cores and 12 threads.

Q: What are the recorded benchmark scores for the AMD Ryzen Embedded 9900X?

A: The database lists no benchmark scores for the AMD Ryzen Embedded 9900X. Its average benchmark score is 0, and its percentile versus all CPUs is 50.

Q: How does the Ryzen AI 7 345 compare to its nearest rivals?

A: Its average score of 29461 is 0 percent different from the AMD Ryzen 7 3800X (29447), 0.2 percent above the AMD EPYC 9654 (29409), 0.7 percent above the Intel Core i5-13500HX (29270), and 0.7 percent below the AMD Ryzen 7 PRO 5755GE (29656).

Q: Does the Ryzen Embedded 9900X support ECC memory?

A: Yes, the AMD Ryzen Embedded 9900X supports ECC memory. The AMD Ryzen AI 7 345 does not.

Q: What is the TDP difference between the two?

A: The AMD Ryzen AI 7 345 has a TDP of 28 watts. The AMD Ryzen Embedded 9900X has a TDP of 120 watts.

Q: Which socket does each processor use?

A: The AMD Ryzen AI 7 345 uses the AMD Socket FP8. The AMD Ryzen Embedded 9900X uses the AMD Socket AM5.

Architecture Differences

The two processors come from different design families. The AMD Ryzen AI 7 345 uses the Krackan Point codename and belongs to the Ryzen AI 300 generation, which is built on the Zen 5 and Zen 5c architecture mix. It is manufactured on a 4 nm process by TSMC. The AMD Ryzen Embedded 9900X uses the Granite Ridge codename and belongs to the Ryzen Embedded series, also based on Zen 5 architecture, with the same 4 nm TSMC process node.

The cache configurations differ significantly. The Ryzen AI 7 345 has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and a total of 4 MB of L3 cache. The Ryzen Embedded 9900X has the same per-core L1 and L2 sizes, but its L3 cache is 64 MB, sixteen times larger. This larger cache is typical of desktop and server-oriented parts and can reduce memory latency for frequently accessed data.

The Ryzen Embedded 9900X is also a chiplet design, with a die size listed as 2x 70.6 mm² and a transistor count of 16,630 million. The Ryzen AI 7 345 does not have listed die size or transistor data. The embedded part supports ECC memory and has an unlocked multiplier, while the mobile part has neither. The integrated graphics differ as well: the Ryzen AI 7 345 uses a Radeon 840M, while the Ryzen Embedded 9900X uses a generic Radeon Graphics solution.

Specification Differences

The core and thread counts are the most obvious difference. The Ryzen AI 7 345 has 6 cores and 12 threads, while the Ryzen Embedded 9900X has 12 cores and 24 threads. Base clocks are 2.00 GHz versus 4.40 GHz, and boost clocks are 4.60 GHz versus 5.60 GHz. The TDP is 28 watts versus 120 watts.

The sockets are incompatible: AMD Socket FP8 for the mobile part, AMD Socket AM5 for the desktop part. Memory support differs, with the Ryzen AI 7 345 supporting both DDR5 and LPDDR5X, while the Ryzen Embedded 9900X supports DDR5 only. Both use dual-channel memory buses with an identical memory bandwidth of 89.6 GB/s. ECC memory is supported only on the Embedded 9900X.

PCIe capabilities differ substantially. The Ryzen AI 7 345 uses PCIe Gen 4 with 14 lanes (CPU only). The Ryzen Embedded 9900X uses PCIe Gen 5 with 24 lanes (CPU only). The production status for both is listed as active. The release date for the Ryzen AI 7 345 is January 14, 2025, while the Ryzen Embedded 9900X was released on October 6, 2025. The multiplier is unlocked on the Embedded part but not on the mobile part. The part numbers are 100-000002122 for the Ryzen AI 7 345 and 100-000000662E for the Ryzen Embedded 9900X. Neither has a launch MSRP listed in the database.