AMD Ryzen Embedded 8640U vs Intel Core Ultra 7 356H Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries for the AMD Ryzen Embedded 8640U and the Intel Core Ultra 7 356H. The `headToHeadBenchmarks` field is empty, and the AMD side carries no benchmark scores at all. This means a direct, test-by-test comparison is impossible from the recorded data alone.

However, the Intel Core Ultra 7 356H has a substantial set of individual benchmark results, and its aggregate performance can be interpreted against its nearest rivals. The AMD Ryzen Embedded 8640U, by contrast, has no recorded benchmark scores in this database, so its performance can only be inferred from its architectural specifications, not from measured results.

The Intel Core Ultra 7 356H records an `avgBenchmarkScore` of 41215. Its nearest rivals in the database are the AMD Ryzen AI 5 PRO 440 with an average score of 41208 (a delta of 0 percent), the Intel Core Ultra 7 366H with 41263 (a delta of -0.1 percent), the AMD Ryzen 9 5900X with 41376 (a delta of -0.4 percent), and the Intel Core Ultra X7 358H with 40967 (a delta of 0.6 percent). These deltas are extremely small, all within a narrow band of roughly one percent. The data shows the Core Ultra 7 356H sits in a highly competitive cluster where no single chip dominates by a meaningful margin.

Looking at the specific Cinebench results for the Intel part, the multicore scores are 3055 in R15, 12153 in R20, and 18395 in R23. Single-core scores are 303 in R15, 1715 in R20, and 2040 in R23. The PassMark suite shows 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, find prime numbers at 327, physics at 2895, and random string sorting at 40990. These numbers establish a baseline for the Intel chip, but without comparable AMD measurements, the head-to-head narrative is one-sided.

Where Each One Wins

Since the AMD Ryzen Embedded 8640U has no benchmark data, the analysis of wins must rely on what is recorded. The Intel Core Ultra 7 356H wins every benchmark category it appears in, by default, because the AMD chip has no scores in those categories. The data does not indicate a single win for the AMD part.

The Intel chip's strong areas are evident from its scores. The data compression score of 336177 is its highest PassMark result, indicating a particular strength in compression workloads. Floating-point math at 103128 and integer math at 83111 are also substantial, suggesting broad computational capability. The multithread score of 33978, combined with the Cinebench R23 multicore score of 18395, points to strong parallel processing. The single-thread score of 4072 and Cinebench R23 single-core score of 2040 show competitive single-thread performance as well.

For the AMD side, the data offers no measured wins. Its architectural specifications, including a 4 nm process node from TSMC, a base clock of 3.50 GHz, and a boost clock of 4.90 GHz, suggest it could be competitive, but the database does not confirm this with any scores. The percentileVsAllCpus field for the AMD chip is 50, meaning it sits at the median of all CPUs in the database. The Intel chip's percentile is 87, placing it well above the median. This percentile gap is a clear indicator that, in the aggregate, the Intel part is expected to outperform the AMD part, even without direct head-to-head results.

Architecture Differences

The two processors are built on fundamentally different architectures. The AMD Ryzen Embedded 8640U uses the Zen 4 architecture, with the codename Hawk Point, and belongs to the 8000 series. It is manufactured on a 4 nm process node by TSMC, with 25,000 million transistors and a die size of 178 mm². The Intel Core Ultra 7 356H uses the Panther Lake architecture, with the same codename, and belongs to the Core Ultra Series 3. It is manufactured on a 3 nm process node by Intel itself, with no transistor count or die size recorded in the database.

Core counts differ sharply. The AMD chip has 6 cores and 12 threads, while the Intel chip has 16 cores and 16 threads. This is a notable distinction: the AMD chip uses simultaneous multithreading to double its thread count, while the Intel chip has more physical cores but no extra threads. The cache hierarchies also differ. AMD provides 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. Intel provides 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The Intel chip has more cache at every level, both per core and in total L3.

The process node difference is significant. Intel's 3 nm node is one step ahead of AMD's 4 nm node in the recorded data, which could impact power efficiency and density. The Intel chip also has a higher memory bandwidth at 115.2 GB/s compared to AMD's 89.6 GB/s. Intel supports both DDR5 and LPDDR5X memory, while AMD supports only DDR5. AMD supports ECC memory, while Intel does not. The PCIe capabilities differ as well: AMD offers Gen 4 with 20 lanes, while Intel offers Gen 5 with 12 lanes. This means AMD has more PCIe lanes but at an older generation, while Intel has fewer lanes but at a newer generation.

The integrated graphics also differ. AMD uses the Radeon 760M, while Intel uses Intel Xe3 Graphics. The database does not provide benchmark scores for either integrated GPU, so a direct comparison is not possible. The sockets are different as well: AMD uses AMD Socket FP8, while Intel uses Intel BGA 2540.

Specification Differences

The two chips differ across several specification fields. The base clock is 3.50 GHz for AMD and 1.90 GHz for Intel. The boost clock is 4.90 GHz for AMD and 4.70 GHz for Intel. The AMD chip has a higher base clock by a substantial margin, and a slightly higher boost clock. The TDP is 28 watts for AMD and 25 watts for Intel, a small difference of 3 watts.

The core and thread counts differ, as noted: 6 cores and 12 threads for AMD versus 16 cores and 16 threads for Intel. The L1 cache is 64 KB per core for AMD and 192 KB per core for Intel. The L2 cache is 1 MB per core for AMD and 2.5 MB per core for Intel. The L3 cache is 16 MB shared for AMD and 18 MB shared for Intel. Memory bandwidth is 89.6 GB/s for AMD and 115.2 GB/s for Intel. ECC support is present on AMD and absent on Intel. PCIe generation is Gen 4 for AMD and Gen 5 for Intel, with 20 lanes versus 12 lanes. Memory support is DDR5 for AMD and DDR5 plus LPDDR5X for Intel.

The process node is 4 nm for AMD and 3 nm for Intel. The transistor count is 25,000 million for AMD and null for Intel. The die size is 178 mm² for AMD and null for Intel. The release dates differ: AMD was released on 2024-04-01, while Intel was released on 2026-01-04. Both are marked as Active in production status. Neither has a launch MSRP recorded in the database. The AMD part number is unknown, while the Intel part number is SA4RGQ9EU. Neither chip has an unlocked multiplier. Both are in the Mobile market segment.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 7 356H has 16 cores and 16 threads, while the AMD Ryzen Embedded 8640U has 6 cores and 12 threads.

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

A: The AMD chip is manufactured on a 4 nm process node by TSMC, while the Intel chip is manufactured on a 3 nm process node by Intel.

Q: Which processor has higher clock speeds?

A: The AMD Ryzen Embedded 8640U has a base clock of 3.50 GHz and a boost clock of 4.90 GHz, both higher than the Intel Core Ultra 7 356H's base clock of 1.90 GHz and boost clock of 4.70 GHz.

Q: Does either processor support ECC memory?

A: The AMD Ryzen Embedded 8640U supports ECC memory, while the Intel Core Ultra 7 356H does not.

Q: What are the memory bandwidth figures?

A: The AMD chip has a memory bandwidth of 89.6 GB/s, while the Intel chip has a memory bandwidth of 115.2 GB/s.

Q: Which processor has a higher benchmark percentile?

A: The Intel Core Ultra 7 356H has a percentile of 87, while the AMD Ryzen Embedded 8640U has a percentile of 50.

The Verdict

The recorded data points to a clear distinction in measured performance. The Intel Core Ultra 7 356H has a percentile of 87, an average benchmark score of 41215, and a full set of Cinebench and PassMark results. The AMD Ryzen Embedded 8640U has a percentile of 50, an average benchmark score of 0, and no recorded benchmark results. In the database's aggregate view, the Intel chip is positioned far above the median, while the AMD chip sits exactly at the median.

The architectural data supports this disparity in some ways but not others. The Intel chip has more cores (16 versus 6), more cache at every level, a smaller process node (3 nm versus 4 nm), and higher memory bandwidth (115.2 GB/s versus 89.6 GB/s). These factors likely contribute to its higher percentile. The AMD chip counters with higher clock speeds, ECC support, more PCIe lanes, and a higher boost clock, but these do not translate into recorded benchmark wins.

For a user prioritizing measured multicore and single-core performance, the data favors the Intel Core Ultra 7 356H. Its Cinebench R23 scores of 18395 multicore and 2040 single-core, along with a PassMark multithread score of 33978, demonstrate strong capabilities. The AMD chip, with no scores, cannot be recommended on the basis of benchmark results. The data suggests the Intel part is the safer choice for performance-focused workloads, while the AMD part may appeal to those needing ECC memory or more PCIe lanes, but no benchmark evidence supports that choice.