AMD Ryzen Embedded 9900X vs Intel Core Ultra 7 356H Comparison

The Verdict

The recorded data presents a clear split between two processors built for entirely different environments. The AMD Ryzen Embedded 9900X is a desktop-class part with 12 cores and 24 threads, a 120 W TDP, and a boost clock of 5.60 GHz. The Intel Core Ultra 7 356H is a mobile processor with 16 cores and 16 threads, a 25 W TDP, and a boost clock of 4.70 GHz. The Intel part holds the 87th percentile among all CPUs in the database, while the AMD part sits at the 50th percentile. The Intel chip also carries an average benchmark score of 41215, while the AMD chip has no recorded average score or benchmark entries in the database. The available measurements therefore describe the Intel part in detail, while the AMD part remains unmeasured.

The Intel Core Ultra 7 356H is the only one of the two with actual benchmark results in the database. Its performance profile shows a strong multi-core showing in Cinebench R23 at 18395 points, with a single-core score of 2040. It also posts competitive numbers in PassMark tests, including a multithread score of 33978 and a single-thread score of 4072. The AMD Ryzen Embedded 9900X cannot be positioned against these figures directly because no benchmark data exists for it in the database. The choice between the two, based strictly on the data, favors the Intel part for anyone who needs verified performance numbers. The AMD part remains an option only for users who prioritize its desktop socket, ECC memory support, and higher boost clock, but the absence of measured scores means its performance cannot be confirmed from the database.

Architecture Differences

The two processors come from different foundries and process nodes. The AMD Ryzen Embedded 9900X uses a 4 nm process from TSMC, while the Intel Core Ultra 7 356H uses a 3 nm process from Intel. The AMD part is built on the Granite Ridge codename and belongs to the Ryzen Embedded generation based on Zen 5. The Intel part uses the Panther Lake codename and belongs to the Core Ultra Series 3 generation, specifically Panther Lake-H. The AMD chip has 12 cores and 24 threads, while the Intel chip has 16 cores and 16 threads. The AMD part has no simultaneous multithreading advantage in its thread count, but the Intel part has more physical cores.

Cache layouts differ substantially. The AMD chip provides 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3 cache. The Intel chip provides 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The AMD part offers a much larger L3 pool, while the Intel part allocates more L1 and L2 per core. The AMD chip supports DDR5 memory only, while the Intel chip supports both DDR5 and LPDDR5X. Both use dual-channel memory buses, but the Intel part has a higher memory bandwidth figure at 115.2 GB/s compared to 89.6 GB/s for the AMD part. ECC memory is supported on the AMD chip but not on the Intel chip. PCIe connectivity also differs: the AMD part provides Gen 5 with 24 lanes, while the Intel part provides Gen 5 with 12 lanes. Integrated graphics are present on both, with AMD using Radeon Graphics and Intel using Intel Xe3 Graphics. The AMD part is a desktop processor on AMD Socket AM5, while the Intel part is a mobile processor on Intel BGA 2540. The AMD part has an unlocked multiplier, while the Intel part does not.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 7 356H has 16 cores and 16 threads. The AMD Ryzen Embedded 9900X has 12 cores and 24 threads. The AMD part has more threads despite fewer cores.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen Embedded 9900X boosts to 5.60 GHz. The Intel Core Ultra 7 356H boosts to 4.70 GHz.

Q: Which processor supports ECC memory?

A: The AMD Ryzen Embedded 9900X supports ECC memory. The Intel Core Ultra 7 356H does not.

Q: Which processor has a higher memory bandwidth?

A: The Intel Core Ultra 7 356H has a memory bandwidth of 115.2 GB/s. The AMD Ryzen Embedded 9900X has a memory bandwidth of 89.6 GB/s.

Q: Which processor has a better percentile ranking in the database?

A: The Intel Core Ultra 7 356H ranks in the 87th percentile among all CPUs. The AMD Ryzen Embedded 9900X ranks in the 50th percentile.

Q: Which processor has benchmark results in the database?

A: Only the Intel Core Ultra 7 356H has recorded benchmark scores. The AMD Ryzen Embedded 9900X has no benchmark entries.

Specification Differences

The two processors differ on nearly every recorded specification. The AMD Ryzen Embedded 9900X uses 12 cores and 24 threads, while the Intel Core Ultra 7 356H uses 16 cores and 16 threads. Base clocks are 4.40 GHz for the AMD part and 1.90 GHz for the Intel part. Boost clocks are 5.60 GHz and 4.70 GHz, respectively. TDP ratings are 120 W for the AMD part and 25 W for the Intel part. The AMD chip fits AMD Socket AM5, while the Intel chip fits Intel BGA 2540. Process nodes are 4 nm for AMD at TSMC and 3 nm for Intel at its own foundry. Transistor count is listed as 16,630 million for the AMD part, with no figure for the Intel part. Die size is listed as 2x 70.6 mm² for the AMD part, with no figure for the Intel part.

Cache configurations differ per core and in total L3. The AMD part has 80 KB L1 per core, 1 MB L2 per core, and 64 MB L3. The Intel part has 192 KB L1 per core, 2.5 MB L2 per core, and 18 MB shared L3. Memory support is DDR5 only for AMD, while Intel supports DDR5 and LPDDR5X. Memory bandwidth is 89.6 GB/s for AMD and 115.2 GB/s for Intel. ECC memory is supported only on AMD. PCIe lanes are 24 for AMD and 12 for Intel, both Gen 5. Integrated graphics are Radeon Graphics on AMD and Intel Xe3 Graphics on Intel. The market segment is Desktop for AMD and Mobile for Intel. The AMD part has an unlocked multiplier, while the Intel part is locked. Release dates are 2025-10-06 for AMD and 2026-01-04 for Intel. The AMD part number is 100-000000662E, and the Intel part number is SA4RGQ9EU.

Head-to-Head Benchmarks

No direct head-to-head benchmark comparisons exist in the database for these two processors. The head-to-head record shows zero wins for either side. However, the Intel Core Ultra 7 356H has a complete set of recorded benchmark scores. The database shows a Cinebench R23 multi-core score of 18395 and a single-core score of 2040. In Cinebench R20, the Intel chip scores 12153 multi-core and 1715 single-core. In Cinebench R15, it scores 3055 multi-core and 303 single-core. PassMark results include a multithread score of 33978, a single-thread score of 4072, integer math at 83111, floating point math at 103128, data compression at 336177, data encryption at 26345, extended instructions at 27898, prime number finding at 327, physics at 2895, and random string sorting at 40990.

The AMD Ryzen Embedded 9900X has no benchmark scores in the database. Its percentile ranking of 50 suggests a median position among all CPUs, but without measured scores there is no way to compare its actual performance against the Intel chip. The Intel part sits at the 87th percentile, which places it well above the median. The nearest rivals to the Intel part in the database include the AMD Ryzen AI 5 PRO 440 with an average score of 41208 and a delta of 0 percent, the Intel Core Ultra 7 366H with an average score of 41263 and a delta of -0.1 percent, the AMD Ryzen 9 5900X with an average score of 41376 and a delta of -0.4 percent, and the Intel Core Ultra X7 358H with an average score of 40967 and a delta of 0.6 percent. These deltas are all within one percent, indicating that the Intel Core Ultra 7 356H performs essentially on par with those four processors in the database.

Where Each One Wins

The Intel Core Ultra 7 356H wins on the basis of verified data. It is the only processor of the two with benchmark results, and its scores place it in the 87th percentile. Its average benchmark score of 41215 puts it in the same performance class as the AMD Ryzen AI 5 PRO 440, the Intel Core Ultra 7 366H, the AMD Ryzen 9 5900X, and the Intel Core Ultra X7 358H, with deltas ranging from -0.4 percent to 0.6 percent. The Intel chip also wins on physical core count with 16 cores, on memory bandwidth with 115.2 GB/s, on L1 and L2 cache per core, and on power efficiency as indicated by its 25 W TDP. It also supports LPDDR5X memory, which the AMD part does not.

The AMD Ryzen Embedded 9900X wins on specifications that favor desktop integration. It has 24 threads versus 16, a much higher base clock of 4.40 GHz, a higher boost clock of 5.60 GHz, and a larger L3 cache at 64 MB. It supports ECC memory, which the Intel part does not. It provides 24 PCIe Gen 5 lanes, double the Intel part's 12 lanes. It uses a socketed AM5 platform rather than a soldered BGA package, and its multiplier is unlocked. Its 120 W TDP reflects a desktop power envelope rather than a mobile one. The AMD part also has a listed transistor count of 16,630 million and a die size of 2x 70.6 mm², details not recorded for the Intel part.

The database cannot award the AMD part any benchmark wins because it has no recorded scores. The Intel part wins every measured category by default. For workloads where a large L3 cache, ECC memory, high boost clocks, and desktop expandability matter, the AMD part offers the relevant specifications. For workloads where verified multi-core and single-core performance, higher memory bandwidth, and lower power draw matter, the Intel part is the only one with data to support a decision. The choice comes down to whether the user needs the AMD part's desktop features or the Intel part's measured performance.