AMD Ryzen Embedded 8645HS vs Intel Core Ultra 7 356H Comparison

Head-to-Head Benchmarks

The database contains complete benchmark results for the Intel Core Ultra 7 356H, while the AMD Ryzen Embedded 8645HS has no recorded benchmark scores in this dataset. The head-to-head comparison therefore relies on the Intel part's measured performance and the architectural parameters of both processors.

The Intel Core Ultra 7 356H posts a Cinebench R23 multi-core score of 18395 and a single-core score of 2040. Its Cinebench R20 results show 12153 multi-core and 1715 single-core, while Cinebench R15 records 3055 multi-core and 303 single-core. These scores place the chip at the 87th percentile among all CPUs in the database, with an average benchmark score of 41215.

The AMD Ryzen Embedded 8645HS carries no benchmark entries in the database, so no direct score comparison is possible. What the data does provide is a clear architectural matchup. The AMD part uses 6 cores and 12 threads, while the Intel chip uses 16 cores and 16 threads. The Intel processor also holds an advantage in cache hierarchy, with 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3, versus the AMD part's 64 KB L1, 1 MB L2, and 16 MB shared L3.

The Intel chip's nearest rivals 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 at 41263 with a delta of -0.1 percent, the AMD Ryzen 9 5900X at 41376 with a delta of -0.4 percent, and the Intel Core Ultra X7 358H at 40967 with a delta of 0.6 percent. These figures indicate that the Core Ultra 7 356H sits in a tightly contested performance band, with all four rivals within roughly one percent of its average score.

Where Each One Wins

The Intel Core Ultra 7 356H demonstrates strengths across every benchmark category recorded in the database. In PassMark tests, it scores 33978 in multithread, 4072 in single-thread, 103128 in floating point math, 83111 in integer math, 336177 in data compression, 26345 in data encryption, 27898 in extended instructions, 2895 in physics, 40990 in random string sorting, and 327 in find prime numbers.

The AMD Ryzen Embedded 8645HS has no measured wins in this dataset, as no benchmark results are recorded for it. The database comparison therefore defaults to the Intel part's recorded performance. However, the AMD processor's specifications suggest capabilities in areas not covered by the benchmark suite. It supports ECC memory, which the Intel chip does not. The AMD part also uses a 4 nm process from TSMC, while Intel uses a 3 nm process from its own foundry. The AMD chip's base clock of 4.30 GHz and boost clock of 5.00 GHz both exceed the Intel part's 1.90 GHz base and 4.70 GHz boost, indicating that in lightly threaded workloads where clock speed dominates, the AMD processor may hold an edge, though no direct measurement exists to confirm this.

The Intel chip's memory bandwidth of 115.2 GB/s exceeds the AMD part's 89.6 GB/s. The AMD chip supports DDR5 memory, while the Intel chip supports both DDR5 and LPDDR5X. Both use dual-channel memory buses. The Intel part provides PCIe Gen 5 with 12 lanes from the CPU, while the AMD part provides PCIe Gen 4 with 20 lanes.

The Verdict

The data supports the Intel Core Ultra 7 356H as the measured performer in this pairing, given that it is the only processor with recorded benchmark results. Its 87th percentile ranking and average score of 41215 place it among the stronger mobile processors in the database, with nearest rivals clustered within a single percentage point.

The AMD Ryzen Embedded 8645HS cannot be evaluated on benchmark performance from this dataset, as no scores are recorded. Its specifications do indicate certain advantages: ECC memory support, a higher boost clock of 5.00 GHz, and a 4 nm TSMC manufacturing process. The Intel chip answers with a higher core count, more cache, higher memory bandwidth, and PCIe Gen 5 connectivity.

For workloads that depend on multi-threaded throughput, the Intel chip's 16 cores and 16 threads, along with its recorded Cinebench and PassMark scores, give it the clear measured advantage. For embedded applications requiring ECC memory or maximum single-thread clock speed, the AMD chip's specifications make it a candidate, but the database contains no performance measurements to quantify that potential.

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 8645HS has 6 cores and 12 threads.

Q: What is the boost clock of each processor?

A: The AMD Ryzen Embedded 8645HS boosts to 5.00 GHz, and the Intel Core Ultra 7 356H boosts to 4.70 GHz.

Q: Which processor has a higher average benchmark score?

A: The Intel Core Ultra 7 356H has an average benchmark score of 41215 and is at the 87th percentile. The AMD Ryzen Embedded 8645HS has no recorded benchmark scores in the database.

Q: Does either processor support ECC memory?

A: The AMD Ryzen Embedded 8645HS supports ECC memory. The Intel Core Ultra 7 356H does not.

Q: What are the manufacturing processes for these chips?

A: The AMD Ryzen Embedded 8645HS uses a 4 nm process from TSMC. The Intel Core Ultra 7 356H uses a 3 nm process from Intel.

Q: Which processor has more L3 cache?

A: The Intel Core Ultra 7 356H has 18 MB of shared L3 cache. The AMD Ryzen Embedded 8645HS has 16 MB of shared L3 cache.

Q: What is the memory bandwidth of each processor?

A: The Intel Core Ultra 7 356H has 115.2 GB/s of memory bandwidth. The AMD Ryzen Embedded 8645HS has 89.6 GB/s.

Architecture Differences

The AMD Ryzen Embedded 8645HS belongs to the 8000 series and uses the Zen 4 architecture under the Hawk Point codename. It is built on a 4 nm process at TSMC with 25,000 million transistors on a 178 mm² die. The processor uses AMD Socket FP8 and has a TDP of 45 watts. Its cache layout includes 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. The integrated graphics are Radeon 760M. The chip supports DDR5 memory on a dual-channel bus with 89.6 GB/s of bandwidth, along with ECC memory. PCIe connectivity is Gen 4 with 20 lanes from the CPU. The multiplier is locked, and the release date is April 1, 2024.

The Intel Core Ultra 7 356H belongs to the Core Ultra Series 3 and uses the Panther Lake architecture under the Panther Lake-H codename. It is built on a 3 nm process at Intel. The processor uses Intel BGA 2540 and has a TDP of 25 watts. Its cache layout includes 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The integrated graphics are Intel Xe3 Graphics. The chip supports DDR5 and LPDDR5X memory on a dual-channel bus with 115.2 GB/s of bandwidth, without ECC support. PCIe connectivity is Gen 5 with 12 lanes from the CPU. The multiplier is locked, and the release date is January 4, 2026.

The process node difference is notable: Intel's 3 nm process versus TSMC's 4 nm for AMD. The transistor count and die size for the Intel chip are not recorded in the database, while the AMD chip's figures are documented. The core count difference is substantial, with Intel offering 16 cores and 16 threads against AMD's 6 cores and 12 threads. The Intel chip also has a larger L3 cache at 18 MB versus 16 MB, and its per-core L1 and L2 allocations are larger as well.

The memory controllers differ in supported types, with Intel accepting both DDR5 and LPDDR5X, while AMD supports only DDR5. The AMD part's ECC support is a distinguishing feature for embedded applications. PCIe generation and lane counts also differ, with AMD providing more lanes at Gen 4 and Intel providing fewer lanes at Gen 5. The power envelopes show AMD at 45 watts TDP and Intel at 25 watts TDP, a significant difference for thermal and battery considerations in mobile systems.

Both processors have locked multipliers and are classified as mobile market segments. The AMD part's production status is active, as is the Intel part's. The Intel chip's part number is SA4RGQ9EU, while the AMD part's part number is listed as unknown. Neither processor has a recorded launch MSRP in the database.