AMD Ryzen Embedded 8640U vs Intel Core Ultra 7 366H Comparison

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 7 366H has 16 cores and 16 threads, while the AMD Ryzen Embedded 8640U has 6 cores and 12 threads. The Intel part offers more than double the core count.

Q: What is the process node difference between the two?

A: The AMD Ryzen Embedded 8640U is built on a 4 nm process by TSMC, while the Intel Core Ultra 7 366H uses Intel's 3 nm process. The Intel chip uses a smaller fabrication node.

Q: Do both processors support ECC memory?

A: No. The AMD Ryzen Embedded 8640U supports ECC memory, while the Intel Core Ultra 7 366H does not. This makes the AMD part more suitable for reliability-focused embedded workloads.

Q: Which processor has higher memory bandwidth?

A: The Intel Core Ultra 7 366H has a memory bandwidth of 115.2 GB/s, compared to 89.6 GB/s for the AMD Ryzen Embedded 8640U. The Intel part has approximately 29% higher memory bandwidth.

Q: What is the release date difference?

A: The AMD Ryzen Embedded 8640U was released on April 1, 2024, while the Intel Core Ultra 7 366H was released on January 4, 2026. The Intel chip is nearly two years newer.

Q: How do the integrated graphics units differ?

A: The AMD Ryzen Embedded 8640U uses Radeon 760M graphics, while the Intel Core Ultra 7 366H uses Intel Xe3 Graphics. Both are integrated, but they belong to different GPU architectures.

Where Each One Wins

The benchmark data shows a clear division of strengths. The Intel Core Ultra 7 366H dominates in every recorded benchmark category, which is expected given its 16 cores versus 6 cores. The database contains 17 benchmark scores for the Intel part and none for the AMD Ryzen Embedded 8640U, meaning the Intel processor has a decisive advantage in all measured workloads.

For multi-threaded and highly parallel tasks such as Cinebench R15, R20, and R23 multicore tests, the Intel Core Ultra 7 366H delivers scores of 2870, 11960, and 28477 respectively. These are substantial numbers that indicate strong performance for rendering, video encoding, and other core-heavy applications.

The Intel part also wins in single-threaded workloads. Its Cinebench R23 single-core score of 4020 and PassMark single-thread score of 4043 show that it does not sacrifice single-core performance despite its many cores. The AMD processor, with its higher boost clock of 4.90 GHz versus 4.80 GHz, might be expected to compete in single-threaded tasks, but without any benchmark data recorded for the AMD part, the Intel chip holds the advantage by default in the database.

Specialized workloads such as PassMark data encryption, extended instructions, and floating-point math also favor the Intel Core Ultra 7 366H. Its data encryption score of 25845 and extended instructions score of 26901 indicate strong cryptographic and SIMD performance. The Intel part's physics score of 2880 rounds out its broad lead.

Architecture Differences

The AMD Ryzen Embedded 8640U uses the Zen 4 architecture under the codename Hawk Point, while the Intel Core Ultra 7 366H uses the Panther Lake architecture. These are fundamentally different designs from different manufacturers.

The AMD processor belongs to the Ryzen Embedded 8000 series and is fabricated by TSMC on a 4 nm process. It contains 25,000 million transistors on a die size of 178 mm². The Intel processor is built on Intel's 3 nm process and belongs to the Core Ultra Series 3. Its transistor count and die size are not recorded in the database.

Cache hierarchies differ significantly. The AMD Ryzen Embedded 8640U has 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 16 MB of shared L3 cache. The Intel Core Ultra 7 366H has 192 KB of L1 cache per core, 2.5 MB of L2 cache per core, and 18 MB of shared L3 cache. The Intel chip has larger per-core caches at every level, plus a larger L3 pool.

Memory support also differs. The AMD part supports DDR5 memory only, while the Intel part supports both DDR5 and LPDDR5X. Both use dual-channel memory buses. The Intel chip's memory bandwidth of 115.2 GB/s exceeds the AMD chip's 89.6 GB/s.

PCIe connectivity diverges as well. The AMD Ryzen Embedded 8640U provides PCIe Gen 4 with 20 lanes from the CPU. The Intel Core Ultra 7 366H provides PCIe Gen 5 with 12 lanes from the CPU. The AMD part has more lanes, but the Intel part supports a newer PCIe generation.

ECC memory support is exclusive to the AMD processor. The Ryzen Embedded 8640U supports ECC memory, while the Intel Core Ultra 7 366H does not. This is a notable feature for embedded and server-like applications where data integrity is critical.

Specification Differences

The two processors differ across nearly every specification field. Core counts stand out immediately: the AMD Ryzen Embedded 8640U has 6 cores and 12 threads, while the Intel Core Ultra 7 366H has 16 cores and 16 threads. The Intel part has more cores but no hyperthreading, resulting in 16 threads total, while the AMD part has fewer cores but hyperthreading, giving 12 threads.

Clock speeds differ in both directions. The AMD processor has a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The Intel processor has a base clock of 2.00 GHz and a boost clock of 4.80 GHz. The AMD chip has higher clocks at both base and boost, but the Intel chip compensates with more cores.

Thermal design power is close: the AMD Ryzen Embedded 8640U has a TDP of 28 watts, while the Intel Core Ultra 7 366H has a TDP of 25 watts. The AMD part draws slightly more power.

Sockets are incompatible. The AMD chip uses AMD Socket FP8, while the Intel chip uses Intel BGA 2540. Neither processor has an unlocked multiplier.

The process node favors Intel at 3 nm versus AMD's 4 nm. The AMD processor has a documented transistor count of 25,000 million and die size of 178 mm², while the Intel processor's transistor count and die size are not recorded.

Memory support favors Intel with both DDR5 and LPDDR5X support, versus DDR5 only for AMD. Memory bandwidth favors Intel at 115.2 GB/s versus 89.6 GB/s. ECC memory favors AMD, as it supports ECC while Intel does not.

PCIe capabilities split the difference: AMD offers Gen 4 with 20 lanes, Intel offers Gen 5 with 12 lanes. Integrated graphics differ, with AMD using Radeon 760M and Intel using Xe3 Graphics. Release dates differ by nearly two years, with AMD launching in April 2024 and Intel launching in January 2026.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results between these two specific processors. However, the Intel Core Ultra 7 366H has a full set of recorded benchmark scores, while the AMD Ryzen Embedded 8640U has none. This means the Intel part wins every comparison where data exists.

The Intel Core Ultra 7 366H achieves a Cinebench R23 multicore score of 28477 and a single-core score of 4020. These are strong results that place the processor in the 87th percentile of all CPUs in the database. Its average benchmark score is 41263.

The nearest rivals to the Intel Core Ultra 7 366H in the database are informative. The Intel Core Ultra 7 356H scores 41215, which is 0.1% lower. The AMD Ryzen AI 5 PRO 440 also scores 41208, another 0.1% difference. The AMD Ryzen 9 5900X scores 41376, which is 0.3% higher than the Core Ultra 7 366H. The Intel Core Ultra X7 358H scores 40967, which is 0.7% lower.

These close margins indicate that the Intel Core Ultra 7 366H sits in a competitive performance band. It trails the Ryzen 9 5900X by a small margin, but that processor is a desktop-class part from an older generation. The Intel chip's 87th percentile ranking confirms it is a high-performing mobile processor.

PassMark results for the Intel Core Ultra 7 366H show strong integer math at 83695, floating-point math at 103615, and multithread performance at 33429. Data compression scores 327455, while random string sorting scores 39814. Prime number finding scores 326, which is a lower result but expected for such a specialized workload.

The AMD Ryzen Embedded 8640U has a 50th percentile ranking among all CPUs, but with an average benchmark score of 0 and no recorded benchmarks, this percentile appears to reflect its specifications rather than measured performance. The Intel part's 87th percentile, by contrast, is backed by actual test scores.

The Verdict

The data in the database points to a clear winner: the Intel Core Ultra 7 366H outperforms the AMD Ryzen Embedded 8640U in every recorded benchmark category. The Intel part's 16 cores, larger caches, higher memory bandwidth, and newer 3 nm process give it a substantial performance advantage. Its 87th percentile ranking and average benchmark score of 41263 confirm its position as a high-performing mobile processor.

Who should pick the Intel Core Ultra 7 366H? Anyone whose workload demands maximum multi-threaded performance. The Cinebench R23 multicore score of 28477 and PassMark multithread score of 33429 indicate strong capability for rendering, simulation, and content creation. The Intel part also delivers excellent single-threaded performance, with a Cinebench R23 single-core score of 4020, so it handles both parallel and serial tasks well.

Who should pick the AMD Ryzen Embedded 8640U? The case rests on features rather than benchmark scores. The AMD part supports ECC memory, which the Intel chip does not. This makes the Ryzen Embedded 8640U the appropriate choice for embedded systems where data integrity is non-negotiable, such as industrial controllers, network appliances, or storage systems. The AMD part also provides more PCIe lanes at 20 versus 12, which could matter for systems requiring extensive I/O connectivity.

The AMD processor's higher clock speeds, with a boost of 4.90 GHz versus 4.80 GHz, suggest it could potentially offer competitive single-threaded performance, but no benchmark data exists in the database to confirm this. The Intel part's measured single-thread score of 4043 in PassMark is strong, so the AMD chip would need to perform exceptionally well to match it.

The release dates also matter. The AMD Ryzen Embedded 8640U launched in April 2024, while the Intel Core Ultra 7 366H launched in January 2026. The Intel chip is newer by nearly two years, which explains its architectural advantages in process node and memory support.

For general-purpose mobile computing where performance is the priority, the Intel Core Ultra 7 366H is the clear choice based on the recorded data. For embedded applications requiring ECC memory and more PCIe lanes, the AMD Ryzen Embedded 8640U has a specific, if narrower, role. The database shows no scenario where the AMD part wins on measured performance, so the Intel processor stands as the higher-performing option in every benchmarked workload.