AMD Ryzen 5 PRO 8640U vs Intel Core 7 251E Comparison

Head-to-Head Benchmarks

The recorded data presents an unusual comparison: the AMD Ryzen 5 PRO 8640U has a full set of benchmark scores, while the Intel Core 7 251E has no benchmark entries in the database. This means direct head-to-head measurements between these two specific processors are unavailable. The analysis must instead rely on the AMD part's absolute scores and its position relative to other CPUs in the database, alongside the Intel part's architectural and specification profile.

For the AMD Ryzen 5 PRO 8640U, the Cinebench results show a clear multi-core strength. The R15 multi-core score is 2014, while the single-core score is 284. In R20, the multi-core score reaches 8392 against a single-core score of 1184. The R23 run produces a multi-core score of 19982 and a single-core score of 2821. These figures indicate a processor that scales well across all cores, with the multi-core R23 result being roughly seven times the single-core result, which is expected for a 6-core, 12-thread part.

PassMark results for the AMD chip reinforce this pattern. The multi-thread score is 22795, and the single-thread score is 3732. The integer math score is 74875, while floating point math sits at 45265. Data compression scores 260925, and data encryption scores 15843. Extended instructions score 19130, and find prime numbers scores 78. Random string sorting produces 32114, and physics scores 1154. The average benchmark score across all recorded tests is 30254, placing it in the 81st percentile of all CPUs in the database.

Because the Intel Core 7 251E has no recorded benchmark scores, its average benchmark score is 0, and its percentile versus all CPUs is 50. The database lists no nearest rivals for the Intel part, and no head-to-head benchmark entries exist for this pairing. The AMD part, however, has four nearest rivals: the AMD Ryzen 7 2700X with an average score of 30213 (a delta of +0.1% for the Ryzen 5 PRO 8640U), the AMD Ryzen 7 7736U at 30364 (delta of -0.4%), the AMD Ryzen 5 7640HS at 30390 (delta of -0.4%), and the Intel Core i9-11980HK at 30422 (delta of -0.6%). These deltas are all within one percent, meaning the Ryzen 5 PRO 8640U performs essentially on par with those four established CPUs, despite having fewer cores than some of them.

The absence of Intel benchmark data means no wins can be assigned to either processor in a direct comparison. The AMD chip's scores stand alone as measured data points. The Intel chip's specifications, however, suggest a different performance envelope, which the architecture and specification sections will address.

The Verdict

From the recorded data, the AMD Ryzen 5 PRO 8640U is the only processor in this pairing with measurable benchmark performance. Its 81st percentile ranking and average score of 30254 place it in the upper tier of all CPUs in the database. The Intel Core 7 251E has no benchmark results, so its performance cannot be quantified from the database. Any selection between these two must therefore rely on the available specification differences and the AMD chip's demonstrated scores.

The data supports choosing the AMD Ryzen 5 PRO 8640U for workloads where measured multi-thread and single-thread performance is required. Its R23 multi-core score of 19982 and single-core score of 2821 provide concrete reference points. The Intel Core 7 251E, with its 24 cores and 32 threads, likely targets a different workload profile, but the database offers no scores to confirm this. For a user prioritizing verified benchmark results, the AMD part is the only option with data backing its performance claims.

The Intel part's higher boost clock of 5.60 GHz against the AMD's 4.90 GHz suggests potential single-thread speed, but without benchmark scores, this remains speculative. Similarly, the Intel chip's 36 MB of shared L3 cache versus the AMD's 16 MB could indicate better cache-sensitive performance, but again, no measured results exist. The verdict from the data is straightforward: the AMD Ryzen 5 PRO 8640U delivers verified performance, while the Intel Core 7 251E does not yet have a performance record in the database.

Architecture Differences

The AMD Ryzen 5 PRO 8640U uses the Zen 4 architecture under the codename Hawk Point, 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 die size of 257 mm² and no transistor count recorded.

The AMD chip's cache structure uses 64 KB of L1 per core and 1 MB of L2 per core, with 16 MB of shared L3. The Intel chip uses 80 KB of L1 per core and 2 MB of L2 per core, with 36 MB of shared L3. The Intel part has a larger L3 cache by 20 MB, but the AMD part has a smaller die despite more transistors, which reflects the denser 4 nm process.

Memory support differs significantly. The AMD chip supports DDR5 only, while the Intel chip supports both DDR4 and DDR5. Both use dual-channel memory buses with identical bandwidth of 89.6 GB/s. Both support ECC memory. PCIe connectivity differs: the AMD chip provides Gen 4 with 20 lanes (CPU only), while the Intel chip provides Gen 5 with 16 lanes (CPU only). The Intel part offers a newer PCIe generation but with fewer lanes.

Integrated graphics also differ. The AMD chip uses the Radeon 760M, while the Intel chip uses the UHD Graphics 770. No benchmark scores exist for either integrated GPU in the database.

The AMD chip's market segment is mobile, while the Intel chip is desktop. The AMD chip uses AMD Socket FP7, and the Intel chip uses Intel Socket 1700. The AMD chip's part numbers are 100-000001318 (FP7r2) and 100-000001378 (FP7), while the Intel chip's part number is SRQDUQ657. Neither processor has an unlocked multiplier.

Specification Differences

The two processors differ across nearly every core specification field. The AMD Ryzen 5 PRO 8640U has 6 cores and 12 threads. The Intel Core 7 251E has 24 cores and 32 threads. This is a difference of 18 cores and 20 threads in Intel's favor.

Base clocks differ: the AMD chip runs at 3.50 GHz, while the Intel chip runs at 2.10 GHz. The AMD chip has a 1.4 GHz higher base clock. Boost clocks also differ, with the AMD chip reaching 4.90 GHz and the Intel chip reaching 5.60 GHz. Here the Intel chip has a 0.7 GHz advantage.

Thermal design power differs substantially. The AMD chip has a TDP of 28 watts, while the Intel chip has a TDP of 65 watts. The Intel part consumes more power, which aligns with its higher core count and boost clock.

The AMD chip's process node is 4 nm, while the Intel chip's is 10 nm. The AMD chip's foundry is TSMC, while the Intel chip's foundry is Intel. The AMD chip has 25,000 million transistors and a 178 mm² die size. The Intel chip has no recorded transistor count but a 257 mm² die size.

Cache sizes differ across all levels. The AMD chip has 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. The Intel chip has 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3.

Memory support differs: the AMD chip supports DDR5 only, while the Intel chip supports DDR4 and DDR5. Both have dual-channel memory buses and 89.6 GB/s bandwidth. Both support ECC memory.

PCIe generation and lanes differ. The AMD chip uses Gen 4 with 20 lanes (CPU only). The Intel chip uses Gen 5 with 16 lanes (CPU only).

Integrated graphics differ: Radeon 760M on the AMD chip versus UHD Graphics 770 on the Intel chip.

Market segment differs: the AMD chip is mobile, the Intel chip is desktop. Sockets differ: AMD Socket FP7 versus Intel Socket 1700.

Release dates differ. The AMD chip was released on 2024-04-15. The Intel chip was released on 2025-01-12. The Intel chip has a launch MSRP of $384. The AMD chip has no launch MSRP recorded.

Production status is active for both. Neither has an unlocked multiplier.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 7 251E has 24 cores and 32 threads. The AMD Ryzen 5 PRO 8640U has 6 cores and 12 threads.

Q: What are the boost clock differences?

A: The AMD Ryzen 5 PRO 8640U boosts to 4.90 GHz. The Intel Core 7 251E boosts to 5.60 GHz, which is 0.7 GHz higher.

Q: Which processor has a higher base clock?

A: The AMD Ryzen 5 PRO 8640U has a base clock of 3.50 GHz. The Intel Core 7 251E has a base clock of 2.10 GHz, which is 1.4 GHz lower.

Q: How does the cache compare between the two?

A: The AMD Ryzen 5 PRO 8640U has 64 KB L1 and 1 MB L2 per core, with 16 MB shared L3. The Intel Core 7 251E has 80 KB L1 and 2 MB L2 per core, with 36 MB shared L3.

Q: What memory types does each support?

A: The AMD Ryzen 5 PRO 8640U supports DDR5 only. The Intel Core 7 251E supports both DDR4 and DDR5. Both use dual-channel memory with 89.6 GB/s bandwidth.

Q: What is the TDP difference?

A: The AMD Ryzen 5 PRO 8640U has a TDP of 28 watts. The Intel Core 7 251E has a TDP of 65 watts.

Q: Which processor has benchmark scores in the database?

A: Only the AMD Ryzen 5 PRO 8640U has benchmark scores. Its average benchmark score is 30254. The Intel Core 7 251E has no recorded benchmark scores.

Where Each One Wins

The AMD Ryzen 5 PRO 8640U wins in every category where measured data exists. Its benchmark scores cover multi-thread and single-thread workloads, with specific results in Cinebench R15, R20, R23, and a full PassMark suite. The R23 multi-core score of 19982 and single-core score of 2821 are recorded data points. The PassMark multi-thread score of 22795 and single-thread score of 3732 further confirm its measured capabilities. The chip's average benchmark score of 30254 and 81st percentile ranking place it above the median CPU in the database.

The AMD chip also wins on power efficiency, as indicated by its 28 watt TDP versus the Intel chip's 65 watts. This lower TDP, combined with the 4 nm process node, suggests better performance per watt, though the database provides no direct efficiency metric.

The Intel Core 7 251E wins on raw specification counts. Its 24 cores and 32 threads dwarf the AMD chip's 6 cores and 12 threads. Its 36 MB of shared L3 cache is more than double the AMD chip's 16 MB. Its boost clock of 5.60 GHz exceeds the AMD chip's 4.90 GHz. Its PCIe Gen 5 support is newer than the AMD chip's Gen 4.

The Intel chip wins on memory flexibility, supporting both DDR4 and DDR5, while the AMD chip supports only DDR5. The Intel chip also has a larger die size at 257 mm² versus 178 mm².

The Intel chip has a recorded launch MSRP of $384, while the AMD chip has no launch MSRP in the database.

For integrated graphics, the database lists the AMD chip with Radeon 760M and the Intel chip with UHD Graphics 770, but no benchmark scores exist for either, so no winner can be determined from the data.

For workload-specific wins, the AMD chip wins on all measured benchmarks, including data compression (260925), data encryption (15843), extended instructions (19130), prime number finding (78), floating point math (45265), integer math (74875), random string sorting (32114), and physics (1154). The Intel chip wins on core count, thread count, cache size, boost clock, PCIe generation, and memory type support. The AMD chip wins on base clock, process node, TDP, and all recorded benchmark scores.