AMD Ryzen Embedded 8840U vs Intel Core Ultra 7 356H Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results for the AMD Ryzen Embedded 8840U against the Intel Core Ultra 7 356H. The Intel processor has a full set of recorded measurements, while the AMD part lacks any benchmark entries in the database. This asymmetry means the only quantitative comparison available comes from the Intel chip's own scores and its position relative to other CPUs.

The Intel Core Ultra 7 356H shows strong multi-core performance in the Cinebench series. Its Cinebench R23 multi-core score of 18395 places it well above typical mobile processors, while the single-core score of 2040 indicates solid per-thread capability. In Cinebench R20, the multi-core result of 12153 and single-core result of 1715 follow the same pattern. The older R15 test shows 3055 multi-core and 303 single-core.

PassMark results for the Intel part reveal its workload-specific strengths. The data compression score of 336177 is exceptionally high, suggesting strong integer throughput and memory subsystem efficiency. Floating point math reaches 103128, while integer math sits at 83111. The extended instructions score of 27898 and data encryption score of 26345 both indicate capable SIMD and cryptographic processing. Random string sorting completes at 40990, and the find prime numbers test yields 327. The multithread score of 33978 and physics score of 2895 round out the PassMark suite. Single-thread performance measures 4072.

The Intel processor holds an 87th percentile ranking among all CPUs in the database, with an average benchmark score of 41215. Its nearest rivals are tightly clustered: the AMD Ryzen AI 5 PRO 440 scores 41208 with a 0% delta, the Intel Core Ultra 7 366H scores 41263 with a -0.1% delta, the AMD Ryzen 9 5900X scores 41376 with a -0.4% delta, and the Intel Core Ultra X7 358H scores 40967 with a 0.6% delta. This grouping indicates the Core Ultra 7 356H sits in a highly competitive performance band where differences between chips are minimal.

Architecture Differences

The AMD Ryzen Embedded 8840U uses the Zen 4 architecture under the Hawk Point codename, built on a 4 nm process at TSMC. It integrates 25,000 million transistors on a 178 mm² die. The Intel Core Ultra 7 356H uses the Panther Lake architecture on a 3 nm process at Intel's own foundry. The database does not list transistor count or die size for the Intel part.

Core counts differ substantially. The AMD chip has 8 cores and 16 threads, while the Intel chip has 16 cores and 16 threads. This means the Intel part relies on more physical cores without hyper-threading, whereas the AMD part uses simultaneous multithreading to reach 16 threads from 8 cores. Base clocks are 3.30 GHz for AMD and 1.90 GHz for Intel, while boost clocks are 5.10 GHz for AMD and 4.70 GHz for Intel.

Cache hierarchies diverge as well. The AMD chip provides 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. The Intel chip offers 192 KB L1 per core, 2.5 MB L2 per core, and 18 MB shared L3. The larger per-core L1 and L2 on the Intel side could benefit latency-sensitive workloads, while the slightly larger shared L3 also favors Intel.

Memory support differs in scope. The AMD processor supports DDR5 with dual-channel configuration and 89.6 GB/s bandwidth, plus ECC memory support. The Intel processor supports both DDR5 and LPDDR5X, also dual-channel, with a higher 115.2 GB/s bandwidth but no ECC. PCIe connectivity also differs: AMD provides Gen 4 with 20 CPU lanes, while Intel provides Gen 5 with 12 CPU lanes. The newer PCIe generation on Intel offers higher per-lane bandwidth despite fewer lanes.

Integrated graphics differ by vendor. AMD ships the Radeon 780M, while Intel ships Xe3 Graphics. The database does not include benchmark scores for either integrated GPU, so no direct comparison is possible from the recorded data.

Thermal design power is close: 28 W for AMD and 25 W for Intel. The AMD socket is AMD Socket FP8, while Intel uses BGA 2540. Both target the mobile market segment and are listed as Active in production status. Release dates show AMD launching on 2024-04-01 and Intel on 2026-01-04, meaning the Intel part is a later product. Neither processor has a launch MSRP recorded in the database, and both have locked multipliers.

FAQ

Q: How many cores and threads does each processor have?

A: The AMD Ryzen Embedded 8840U has 8 cores and 16 threads. The Intel Core Ultra 7 356H has 16 cores and 16 threads.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen Embedded 8840U boosts to 5.10 GHz, while the Intel Core Ultra 7 356H boosts to 4.70 GHz.

Q: What memory types do the two processors support?

A: The AMD chip supports DDR5 with dual-channel configuration and ECC memory. The Intel chip supports DDR5 and LPDDR5X with dual-channel configuration but no ECC.

Q: What is the Intel Core Ultra 7 356H's average benchmark score and percentile ranking?

A: The Intel part scores 41215 on average and ranks in the 87th percentile among all CPUs in the database.

Q: Which processor has a larger shared L3 cache?

A: The Intel Core Ultra 7 356H has 18 MB of shared L3 cache, while the AMD Ryzen Embedded 8840U has 16 MB.

Q: What process nodes do the two chips use?

A: The AMD Ryzen Embedded 8840U uses a 4 nm process at TSMC. The Intel Core Ultra 7 356H uses a 3 nm process at Intel.

Specification Differences

The two processors differ in nearly every core specification. Core count is 8 for AMD versus 16 for Intel. Threads are 16 for both, but achieved differently. Base clock is 3.30 GHz for AMD versus 1.90 GHz for Intel. Boost clock is 5.10 GHz for AMD versus 4.70 GHz for Intel. TDP is 28 W for AMD versus 25 W for Intel.

Socket types differ: AMD uses AMD Socket FP8, Intel uses Intel BGA 2540. The architecture is Zen 4 for AMD versus Panther Lake for Intel. Codename is Hawk Point for AMD versus Panther Lake for Intel. Process node is 4 nm for AMD versus 3 nm for Intel. Foundry is TSMC for AMD versus Intel for Intel. Transistor count is 25,000 million for AMD, with no figure recorded for Intel. Die size is 178 mm² for AMD, with no figure recorded for Intel.

Cache sizes differ across all levels. L1 is 64 KB per core for AMD versus 192 KB per core for Intel. L2 is 1 MB per core for AMD versus 2.5 MB per core for Intel. L3 is 16 MB shared for AMD versus 18 MB shared for Intel.

Memory support differs: DDR5 only for AMD versus DDR5 and LPDDR5X for Intel. Memory bandwidth is 89.6 GB/s for AMD versus 115.2 GB/s for Intel. ECC memory is supported on AMD but not on Intel. PCIe is Gen 4 with 20 lanes for AMD versus Gen 5 with 12 lanes for Intel.

Integrated graphics differ: Radeon 780M for AMD versus Intel Xe3 Graphics for Intel. Release dates are 2024-04-01 for AMD versus 2026-01-04 for Intel. The part number is unknown for AMD versus SA4RGQ9EU for Intel. Both have locked multipliers, and neither has a recorded launch MSRP.

Where Each One Wins

Based strictly on the database, the Intel Core Ultra 7 356H holds every measured benchmark win because no benchmark results exist for the AMD Ryzen Embedded 8840U. The Intel chip demonstrates particular strength in data compression with a score of 336177, which is its highest individual PassMark result. The multi-core Cinebench R23 score of 18395 confirms that the 16 physical cores deliver substantial parallel throughput. The single-core Cinebench R23 score of 2040 shows that per-thread performance is also competitive despite the lower 1.90 GHz base clock.

The AMD processor's advantages are architectural rather than measured. Its 5.10 GHz boost clock is higher than the Intel chip's 4.70 GHz, which could favor lightly threaded workloads that depend on maximum single-core frequency. The 20 PCIe Gen 4 lanes provide more total lane count than Intel's 12 Gen 5 lanes, though the newer Gen 5 standard offers higher per-lane bandwidth. ECC memory support gives the AMD part a feature that the Intel chip lacks, which matters for reliability-sensitive embedded applications.

The Intel chip's higher memory bandwidth of 115.2 GB/s versus 89.6 GB/s suggests an advantage in memory-intensive workloads, and its support for LPDDR5X adds flexibility for low-power mobile designs. The larger L2 and L3 caches on Intel could reduce memory access pressure. The 3 nm process node gives Intel a density advantage over AMD's 4 nm process, although the database does not record transistor counts or die sizes for the Intel part to quantify this.

The Verdict

The recorded data overwhelmingly favors the Intel Core Ultra 7 356H for any user choosing between these two processors based on benchmark performance. The Intel chip scores in the 87th percentile of all CPUs in the database, while the AMD Ryzen Embedded 8840U has no recorded benchmark scores and sits at the 50th percentile with an average score of 0. The Intel part's Cinebench R23 multi-core score of 18395 and PassMark multithread score of 33978 indicate strong parallel capability, and its average benchmark score of 41215 places it alongside the AMD Ryzen AI 5 PRO 440, Intel Core Ultra 7 366H, AMD Ryzen 9 5900X, and Intel Core Ultra X7 358H in a tight performance cluster.

The AMD part should only be considered when its specific features are essential. Its ECC memory support is absent on the Intel chip, which can be a deciding factor for embedded systems requiring data integrity. The higher boost clock of 5.10 GHz could benefit single-threaded tasks, though the Intel chip's single-core Cinebench R23 score of 2040 demonstrates it is not weak in that area. The 20 PCIe Gen 4 lanes offer more connectivity options than Intel's 12 Gen 5 lanes.

For general mobile computing, the Intel Core Ultra 7 356H is the clear choice from the available data. Its 16 physical cores, larger caches, higher memory bandwidth, and 3 nm process node combine to produce benchmark results that rank it among the top processors in the database. The AMD Ryzen Embedded 8840U remains a viable option only for specialized embedded deployments where ECC memory or specific socket requirements take precedence over raw benchmark performance. The database currently provides no quantitative evidence that the AMD chip can match the Intel processor's measured capabilities.