AMD Ryzen 5 8640U vs Intel Core i7-1280P Comparison

The Intel Core i7-1280P and AMD Ryzen 5 8640U are close competitors in the mobile processor space, with average benchmark scores of 26469 and 26462, respectively. The data shows a virtual tie in overall performance, with the Intel part holding a 0% deltaPct against the AMD chip, while the AMD Ryzen 5 8640U also shows a 0% deltaPct against the Intel part. Despite this parity, the two processors achieve their similar results through very different means, with the Intel chip winning 7 benchmark comparisons and the AMD chip winning 8. This split suggests that the choice between them depends heavily on the specific workload, as each processor demonstrates clear strengths and weaknesses across different test categories.

Head-to-Head Benchmarks

The most decisive Intel victories come in multi-threaded and physics-based workloads. In the Cinebench R15 multicore test, the Intel Core i7-1280P scores 2112 against the AMD Ryzen 5 8640U’s 1663, a substantial 27% advantage. The Cinebench R23 multicore test shows a smaller but still significant lead, with the Intel chip scoring 11666 versus 10433 for the AMD, a delta of 11.8%. The PassMark physics test is even more lopsided, with Intel scoring 1411 compared to AMD’s 1033, representing a 36.6% edge. These results indicate that the Intel processor’s core count and thread count provide a clear advantage in heavily parallelized computational tasks.

The AMD Ryzen 5 8640U fights back in several single-threaded and specialized workloads. In the Cinebench R15 singlecore test, AMD scores 256 against Intel’s 238, a 7% lead. The PassMark single_thread test shows AMD ahead at 3534 versus 3316 for Intel, a 6.2% difference. The PassMark extended_instructions test is AMD’s largest win, with a score of 16500 against Intel’s 12897, a 21.8% advantage. AMD also wins the data_compression test (230080 vs 220621, a 4.1% lead) and the data_encryption test (14013 vs 13179, a 6% lead). These wins suggest that AMD’s architecture is more efficient in certain instruction-heavy and data-handling scenarios.

Several benchmarks show a near tie, highlighting the overall balance between the two. The Cinebench R23 singlecore test shows both processors scoring exactly 1651, a 0% delta. The PassMark multithread test gives AMD a marginal win at 20322 versus Intel’s 20168, a 0.8% difference. Intel wins the integer_math test with 75485 against AMD’s 68051, a 10.9% lead, and the floating_point_math test with 51355 versus 40330, a 27.3% lead. Intel also wins the find_prime_numbers test (86 vs 69, a 24.6% advantage), while AMD takes the random_string_sorting test (28066 vs 24308, a 13.4% lead). The overall pattern is one of Intel dominating in raw compute and physics, while AMD excels in instruction-level and data-oriented tasks.

Where Each One Wins

The Intel Core i7-1280P is the stronger choice for workloads that demand high core counts and heavy parallel processing. Its wins in Cinebench R15 and R23 multicore tests, along with the PassMark physics test, indicate that it is better suited for video rendering, 3D modeling, and other multi-threaded applications. The 27% lead in Cinebench R15 multicore is particularly notable, as this benchmark is a common proxy for professional content creation performance. Additionally, the 24.6% win in find_prime_numbers and the 27.3% win in floating_point_math suggest that Intel has an edge in scientific computing and numerical analysis tasks that can utilize its 14 cores and 20 threads.

The AMD Ryzen 5 8640U is the better option for tasks that rely on single-threaded performance and specialized instruction sets. Its wins in the Cinebench R15 singlecore test and the PassMark single_thread test indicate that it provides snappier performance in everyday applications like web browsing, office productivity, and light photo editing. The 21.8% advantage in extended_instructions is significant for workloads that use advanced CPU instructions, such as encryption, compression, and certain types of data processing. The wins in data_compression and data_encryption further reinforce this, making the AMD chip a strong candidate for tasks involving file archiving, data transfer, and security-related operations.

For users who prioritize a balance of both, the data shows that neither processor has a universal advantage. The tie in Cinebench R23 singlecore and the near tie in PassMark multithread suggest that each processor can handle a mixed workload competently. However, the specific benchmark wins indicate that Intel is the clear choice for heavy compute, while AMD is the clear choice for efficiency in single-threaded and instruction-heavy tasks. The 36.6% physics score difference is the largest gap in either direction, making it the defining metric for users who rely on physics simulations or gaming physics engines.

Architecture Differences

The fundamental architectural difference lies in the core design and process technology. The Intel Core i7-1280P uses the Alder Lake architecture, built on Intel’s 10 nm process node, with a die size of 217 mm². It features 14 cores and 20 threads, which is made possible by a hybrid design that combines performance and efficiency cores. The AMD Ryzen 5 8640U, on the other hand, uses the Zen 4 architecture under the Hawk Point codename, built on TSMC’s 4 nm process node, with a die size of 178 mm². It has 6 cores and 12 threads, a more traditional uniform core design. The process node difference is significant, as the 4 nm node is more advanced than the 10 nm node, allowing for greater transistor density. The AMD chip has 25,000 million transistors, while the Intel chip’s transistor count is not listed in the data.

The cache hierarchy also differs substantially between the two processors. The Intel Core i7-1280P has 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and 24 MB of shared L3 cache. The AMD Ryzen 5 8640U has 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 16 MB of shared L3 cache. This means the Intel chip has a larger total cache pool, which can be beneficial for workloads that constantly access large datasets. However, the AMD chip’s smaller cache is paired with a different memory architecture, as it supports only DDR5 memory with a dual-channel bus and a memory bandwidth of 89.6 GB/s, while the Intel chip supports both DDR4 and DDR5 but does not list a memory bandwidth figure.

The integrated graphics differ as well, with the Intel Core i7-1280P featuring Iris Xe 96EU and the AMD Ryzen 5 8640U featuring Radeon 760M. Neither processor has a listed launch MSRP, and both are locked (multiplierUnlocked is false). The socket types are different: the Intel chip uses Intel BGA 1744, while the AMD chip uses AMD Socket FP8. The release dates show the Intel chip launching in February 2022 and the AMD chip launching in December 2023, but precise performance implications of this timing are not directly measurable from the benchmark data. Both processors are listed as Active in production status and target the Mobile market segment.

Specification Differences

The core and thread counts are the most obvious specification difference: the Intel Core i7-1280P has 14 cores and 20 threads, while the AMD Ryzen 5 8640U has 6 cores and 12 threads. The base clock speeds differ as well, with the Intel chip running at 1800.00 MHz and the AMD chip at 3500.00 MHz. The boost clocks are closer, with Intel reaching 4.80 GHz and AMD reaching 4.90 GHz. Both processors have a TDP of 28 watts, but the process nodes differ, with Intel using 10 nm and AMD using 4 nm. The L3 cache is larger on the Intel chip at 24 MB shared, versus 16 MB shared on the AMD chip. The memory support differs, with Intel supporting both DDR4 and DDR5, while AMD supports only DDR5. The AMD chip has a listed memory bandwidth of 89.6 GB/s, while the Intel chip does not have a bandwidth figure listed. Both use dual-channel memory buses and have the same PCIe configuration of Gen 4 with 20 lanes (CPU only).

The integrated graphics are named differently, with Intel using Iris Xe 96EU and AMD using Radeon 760M. The die sizes are slightly different (217 mm² for Intel, 178 mm² for AMD), and the AMD chip has a listed transistor count of 25,000 million, while the Intel chip does not. Neither processor supports ECC memory, and both are locked (no unlocked multiplier). The part numbers are distinct, with Intel using SRLD5 and AMD using multiple part numbers (100-000001324(FP7r2), 100-000001376(FP7), 100-000001313(FP8)). The release dates differ, as noted previously.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Core i7-1280P has an average benchmark score of 26469, while the AMD Ryzen 5 8640U has an average score of 26462. The difference is negligible, with a 0% deltaPct between them.

Q: How do the two processors compare in multi-core performance?

A: The Intel Core i7-1280P wins the Cinebench R15 multicore test with 2112 versus 1663 for the AMD Ryzen 5 8640U, a 27% advantage. In Cinebench R23 multicore, Intel leads 11666 to 10433, an 11.8% edge. The PassMark multithread test is nearly tied, with AMD winning 20322 to 20168, a 0.8% difference.

Q: Which processor is better for single-threaded tasks?

A: The AMD Ryzen 5 8640U wins the Cinebench R15 singlecore test with 256 versus 238 for Intel, a 7% lead. In the PassMark single_thread test, AMD scores 3534 against Intel’s 3316, a 6.2% advantage. The Cinebench R23 singlecore test shows a tie at 1651 for both.

Q: What are the core and thread counts for each processor?

A: The Intel Core i7-1280P has 14 cores and 20 threads. The AMD Ryzen 5 8640U has 6 cores and 12 threads.

Q: How do the process nodes differ?

A: The Intel Core i7-1280P is built on a 10 nm process node, while the AMD Ryzen 5 8640U is built on a 4 nm process node. The AMD chip uses TSMC as its foundry, while Intel uses its own foundry.

Q: Which processor has a larger L3 cache?

A: The Intel Core i7-1280P has 24 MB of shared L3 cache, while the AMD Ryzen 5 8640U has 16 MB of shared L3 cache.

The Verdict

The data presents a clear split: the Intel Core i7-1280P is the choice for users who need maximum multi-core throughput. Its 27% lead in Cinebench R15 multicore and 36.6% lead in PassMark physics make it the superior option for rendering, simulation, and heavy computational workloads. The Intel chip’s 14 cores and 20 threads provide a tangible advantage in these scenarios, despite the AMD chip’s higher base clock. Users who run video encodes, 3D renders, or scientific calculations will see meaningful performance gains from the Intel processor.

The AMD Ryzen 5 8640U is the better pick for users who prioritize single-threaded responsiveness and instruction-level efficiency. Its wins in singlecore benchmarks, extended_instructions, data_compression, and data_encryption indicate that it excels in everyday computing and data-focused tasks. The 21.8% advantage in extended_instructions is particularly compelling for developers and power users who utilize advanced CPU features. While it has fewer cores, the AMD chip’s 4 nm process node and higher base clock of 3500.00 MHz contribute to its efficiency in these areas.

For a general-purpose user, the choice is less clear-cut. The overall average scores are nearly identical, and the tie in Cinebench R23 singlecore shows that both chips can handle typical office and multimedia tasks without issue. The decision should be driven by the specific workload mix. If the workload is dominated by parallel compute, the Intel Core i7-1280P is the clear winner. If the workload involves a lot of single-threaded tasks, data compression, or encryption, the AMD Ryzen 5 8640U offers a measurable advantage. The benchmark data does not indicate a universal winner, making the choice dependent on the user’s primary applications.