AMD Ryzen Embedded 8640U vs Intel Core 7 251E Comparison

Head-to-Head Benchmarks

The recorded data shows no direct benchmark scores for either processor. The AMD Ryzen Embedded 8640U and the Intel Core 7 251E both hold a percentile rank of 50 against all CPUs in the database, and both carry an average benchmark score of zero in the current dataset. With no head-to-head benchmark entries, the comparison must rely on architectural and specification-based analysis rather than measured performance deltas.

The absence of benchmark results means the database does not provide a single confirmed win for either part. The wins tally stands at zero for both processors. This is not a statement about capability; it is a reflection of the data currently available. Without measured scores, performance conclusions cannot be drawn from direct comparison. The analysis that follows is therefore constrained to the recorded specifications, memory support, process technology, and platform characteristics.

What the data does show is a clear distinction in core counts. The Intel Core 7 251E offers 24 cores and 32 threads, while the AMD Ryzen Embedded 8640U offers 6 cores and 12 threads. This is a fourfold difference in core count and a 20-thread difference in threading capacity. For workloads that scale linearly with core availability, the Intel part has a structural advantage that cannot be offset by clock speed alone. The AMD part counters with a higher base clock, 3.50 GHz versus 2.10 GHz, and a boost clock that reaches 4.90 GHz against the Intel part's 5.60 GHz. The Intel boost advantage is 0.70 GHz, but the base clock advantage for AMD is 1.40 GHz.

Architecture Differences

The two processors come from fundamentally different design lineages. The AMD Ryzen Embedded 8640U uses the Zen 4 architecture under the Hawk Point codename, part of the 8000 series. It is built on a 4 nm process node at TSMC, with 25,000 million transistors on a 178 mm² die. The Intel Core 7 251E uses the Bartlett Lake codename, built on a 10 nm process node at Intel, with a larger 257 mm² die size. The process node difference, 4 nm versus 10 nm, suggests a significant density and efficiency gap in favor of AMD, though the Intel part compensates with a substantially larger physical die and more cores.

Cache hierarchies differ sharply. The AMD processor allocates 64 KB of L1 cache per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. The Intel processor allocates 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3 cache. Per-core cache allocations are higher on the Intel side, and the shared L3 pool is more than double that of the AMD part. For workloads that repeatedly access large working sets, the Intel part's 36 MB L3 cache provides more on-die storage capacity.

Memory support also diverges. The AMD Ryzen Embedded 8640U supports DDR5 exclusively, while the Intel Core 7 251E supports both DDR4 and DDR5. Both use a dual-channel memory bus, and both record a memory bandwidth of 89.6 GB/s. Both support ECC memory. The Intel part's additional DDR4 compatibility broadens its platform flexibility, allowing it to be paired with older memory technology without sacrificing the option to use DDR5.

PCIe capabilities differ by generation and lane count. The AMD processor uses PCIe Gen 4 with 20 CPU-only lanes. The Intel processor uses PCIe Gen 5 with 16 CPU-only lanes. The Intel part offers a newer PCIe generation, which doubles the per-lane bandwidth potential compared to Gen 4, though it provides four fewer CPU-only lanes. The AMD part has more total lanes, which can be advantageous for configurations that need to attach multiple devices directly to the CPU.

Integrated graphics differ as well. The AMD Ryzen Embedded 8640U ships with the Radeon 760M, while the Intel Core 7 251E ships with UHD Graphics 770. The database records the presence of both but does not include performance metrics for either. The market segments also differ: the AMD part is classified as mobile, while the Intel part is classified as desktop. The AMD processor uses AMD Socket FP8, and the Intel processor uses Intel Socket 1700. The production status for both is listed as active.

The Verdict

The data indicates two processors aimed at different deployment profiles. The AMD Ryzen Embedded 8640U, with its 28 W TDP and mobile classification, is positioned for power-conscious embedded systems. The Intel Core 7 251E, with its 65 W TDP and desktop classification, is positioned for higher-throughput environments where power draw is a secondary concern. The TDP difference is 37 W, which is substantial for thermal design and system cooling requirements.

For workloads that depend on core count and parallel throughput, the Intel Core 7 251E is the only choice supported by the recorded specifications. Its 24 cores and 32 threads, combined with 36 MB of shared L3 cache and PCIe Gen 5 support, align with multi-threaded server-style or workstation-style tasks. The AMD part's 6 cores and 12 threads, with 16 MB of shared L3 cache and PCIe Gen 4, align with lighter embedded workloads where the 4 nm process node and lower TDP carry more weight.

The Intel part carries a launch MSRP of $384, which is the only pricing data available in the database. The AMD part has no recorded launch MSRP. No comparison of price-to-performance is possible from the available data, and the database does not support any claim about relative cost efficiency.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 7 251E has 24 cores and 32 threads. The AMD Ryzen Embedded 8640U has 6 cores and 12 threads.

Q: What are the base and boost clock speeds for each processor?

A: The AMD Ryzen Embedded 8640U has a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The Intel Core 7 251E has a base clock of 2.10 GHz and a boost clock of 5.60 GHz.

Q: Which processor supports DDR4 memory?

A: The Intel Core 7 251E supports both DDR4 and DDR5. The AMD Ryzen Embedded 8640U supports DDR5 only.

Q: What is the TDP of each processor?

A: The AMD Ryzen Embedded 8640U has a TDP of 28 W. The Intel Core 7 251E has a TDP of 65 W.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen Embedded 8640U and the Intel Core 7 251E support ECC memory.

Q: What PCIe generation does each processor use?

A: The AMD Ryzen Embedded 8640U uses PCIe Gen 4 with 20 CPU-only lanes. The Intel Core 7 251E uses PCIe Gen 5 with 16 CPU-only lanes.

Q: What is the L3 cache capacity for each processor?

A: The AMD Ryzen Embedded 8640U has 16 MB of shared L3 cache. The Intel Core 7 251E has 36 MB of shared L3 cache.

Where Each One Wins

The AMD Ryzen Embedded 8640U wins in power efficiency and process technology. Its 4 nm TSMC node is the more advanced manufacturing process recorded in the comparison. The 28 W TDP is less than half of the Intel part's 65 W TDP, which makes the AMD processor more suitable for thermally constrained embedded systems. The higher base clock of 3.50 GHz provides a starting performance level that does not depend on boost behavior. The 20 PCIe Gen 4 lanes offer more direct CPU-attached connectivity for configurations requiring multiple devices.

The Intel Core 7 251E wins in core count, thread count, cache capacity, and PCIe generation. The 24-core, 32-thread configuration dominates on paper for parallel workloads. The 36 MB shared L3 cache is more than double the AMD part's 16 MB, which helps with larger working sets. The 5.60 GHz boost clock is the highest boost frequency recorded in this comparison. PCIe Gen 5 support provides a newer interconnect standard, even with fewer lanes. The dual memory support for DDR4 and DDR5 gives platform flexibility that the AMD part lacks. The Intel part also has a larger die at 257 mm², which supports the additional cores and cache.

The AMD part is the more compact design at 178 mm² and uses fewer transistors, 25,000 million, compared to the Intel part's unspecified transistor count. The recorded die size difference of 79 mm² reflects the different design targets. The Intel part's launch MSRP of $384 is the only price point recorded, so no cost comparison is possible.

Specification Differences

The two processors differ across nearly every recorded specification. Core count: 6 for AMD, 24 for Intel. Thread count: 12 for AMD, 32 for Intel. Base clock: 3.50 GHz for AMD, 2.10 GHz for Intel. Boost clock: 4.90 GHz for AMD, 5.60 GHz for Intel. TDP: 28 W for AMD, 65 W for Intel. Socket: AMD Socket FP8 for AMD, Intel Socket 1700 for Intel. Architecture: Zen 4 for AMD, no architecture field recorded for Intel. Codename: Hawk Point for AMD, Bartlett Lake for Intel. Process node: 4 nm for AMD, 10 nm for Intel. Foundry: TSMC for AMD, Intel for Intel. Die size: 178 mm² for AMD, 257 mm² for Intel. L1 cache: 64 KB per core for AMD, 80 KB per core for Intel. L2 cache: 1 MB per core for AMD, 2 MB per core for Intel. L3 cache: 16 MB shared for AMD, 36 MB shared for Intel. Memory support: DDR5 for AMD, DDR4 and DDR5 for Intel. PCIe: Gen 4 with 20 lanes for AMD, Gen 5 with 16 lanes for Intel. Integrated graphics: Radeon 760M for AMD, UHD Graphics 770 for Intel. Market segment: mobile for AMD, desktop for Intel. Release date: April 2024 for AMD, January 2025 for Intel. The Intel part has a recorded part number, SRQDUQ657, while the AMD part's part number is listed as unknown. Both processors have locked multipliers, both support ECC memory, both use dual-channel memory buses, and both record 89.6 GB/s memory bandwidth. The Intel part has a launch MSRP of $384. The AMD part has no launch MSRP recorded.