AMD Ryzen 5 PRO 8645HS vs Intel Core 7 251E Comparison

The AMD Ryzen 5 PRO 8645HS and Intel Core 7 251E occupy different positions in the database. The AMD part has a full set of recorded benchmark results, an average benchmark score of 30,879, and an 82nd percentile rank among all CPUs. The Intel part has no benchmark scores, an average benchmark score of 0, and a 50th percentile rank. No head-to-head benchmark entries exist for the pair, so the comparison must separate measured AMD results from the Intel part's specification-only listing.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark rows for these two processors, and the wins counters show 0 for both parts. Consequently, there is no direct Intel win to report. The AMD Ryzen 5 PRO 8645HS contributes the only measured workload results. In Cinebench R15, it scores 1,989 points multi-core and 280 points single-core. In Cinebench R20, it scores 8,291 multi-core and 1,170 single-core. In Cinebench R23, it scores 19,742 multi-core and 2,787 single-core. Those results indicate a processor whose multi-threaded output is substantially higher than its single-thread output.

PassMark results further define the AMD part. The multithread score is 23,569, the single-thread score is 3,858, integer math is 72,740, floating point math is 45,481, data encryption is 17,387, data compression is 265,826, extended instructions is 21,212, find prime numbers is 73, physics is 1,208, and random string sorting is 35,472. Data compression is the highest PassMark subscore, while find prime numbers is the lowest. These recorded scores are the only benchmark wins assignable in this comparison; the Intel Core 7 251E has no entries in the benchmark array.

The AMD part's average benchmark score of 30,879 places it very close to its nearest rivals. It is 0.4% above the AMD Ryzen 7 8700F (30,746), 0.5% below the Intel Core i7-13700TE (31,028), 0.6% below the AMD Ryzen 9 8945HS (31,074), and 0.6% below the Intel Core i7-12700F (31,081). The Intel Core 7 251E does not appear among those nearest rivals, which is consistent with its empty benchmark record.

FAQ

Q: What recorded benchmark scores exist for the AMD Ryzen 5 PRO 8645HS?

A: The database lists Cinebench R15 multi-core 1,989 and single-core 280, R20 multi-core 8,291 and single-core 1,170, and R23 multi-core 19,742 and single-core 2,787. PassMark results are multithread 23,569, single-thread 3,858, integer math 72,740, floating point math 45,481, data encryption 17,387, data compression 265,826, extended instructions 21,212, find prime numbers 73, physics 1,208, and random string sorting 35,472.

Q: Does the Intel Core 7 251E have any benchmark scores?

A: No. Its benchmark list is empty, its average benchmark score is 0, and its percentile versus all CPUs is 50. Its nearest rivals list is also empty.

Q: How does the AMD part compare to its nearest rivals?

A: Its average score is 30,879. It sits 0.4% above the AMD Ryzen 7 8700F (30,746), 0.5% below the Intel Core i7-13700TE (31,028), 0.6% below the AMD Ryzen 9 8945HS (31,074), and 0.6% below the Intel Core i7-12700F (31,081).

Q: What memory types do the two processors support?

A: The AMD Ryzen 5 PRO 8645HS supports DDR5 only, dual-channel, with 89.6 GB/s bandwidth and ECC. The Intel Core 7 251E supports DDR4 and DDR5, also dual-channel with 89.6 GB/s bandwidth and ECC.

Q: What are the core, thread, and cache differences?

A: AMD has 6 cores, 12 threads, 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. Intel has 24 cores, 32 threads, 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3.

Q: Which processor has the higher boost clock?

A: Intel Core 7 251E has a boost clock of 5.60, while AMD Ryzen 5 PRO 8645HS has a boost clock of 5.00. AMD has the higher base clock at 4.30 versus Intel's 2.10.

Architecture Differences

The AMD Ryzen 5 PRO 8645HS uses Zen 4 architecture under the Hawk Point codename. It is built on a 4 nm process at TSMC and integrates 25,000 million transistors on a 178 mm² die. The Intel Core 7 251E uses the Bartlett Lake codename and is built on a 10 nm process at Intel with a 257 mm² die; the database does not list a transistor count for it. These manufacturing differences place the AMD part on a smaller process and smaller die with a listed transistor count, while the Intel part uses a larger process and larger die.

Cache structures differ as well. AMD provides 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. Intel provides 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3. The Intel part has more L3 cache, more L2 per core, and more L1 per core in the listed specification. Core arrangement also differs: the AMD part is a 6-core, 12-thread design, while the Intel part is a 24-core, 32-thread design.

Other architectural features: AMD uses PCIe Gen 4 with 20 CPU-only lanes, while Intel uses PCIe Gen 5 with 16 CPU-only lanes. AMD supports DDR5 memory only, while Intel supports DDR4 and DDR5. Both use a dual-channel memory bus with 89.6 GB/s bandwidth and ECC support. The integrated graphics differ: AMD uses Radeon 760M, Intel uses UHD Graphics 770. The AMD part is listed for the mobile market segment on AMD Socket FP7, while the Intel part is listed for the desktop market segment on Intel Socket 1700.

Specification Differences

The table below records the fields where the two processors differ.

| Field | AMD Ryzen 5 PRO 8645HS | Intel Core 7 251E |

| --- | --- | --- |

| Cores | 6 | 24 |

| Threads | 12 | 32 |

| Base clock | 4.30 | 2.10 |

| Boost clock | 5.00 | 5.60 |

| TDP | 45 | 65 |

| Socket | AMD Socket FP7 | Intel Socket 1700 |

| Process node | 4 nm | 10 nm |

| Foundry | TSMC | Intel |

| Transistors | 25,000 million | not listed |

| Die size | 178 mm² | 257 mm² |

| L1 per core | 64 KB | 80 KB |

| L2 per core | 1 MB | 2 MB |

| L3 shared | 16 MB | 36 MB |

| Memory support | DDR5 | DDR4, DDR5 |

| PCIe | Gen 4, 20 Lanes (CPU only) | Gen 5, 16 Lanes (CPU only) |

| Integrated graphics | Radeon 760M | UHD Graphics 770 |

| Market segment | Mobile | Desktop |

| Release date | 2024-04-15 | 2025-01-12 |

| Part number | 100-000001315(FP7r2),100-000001388(FP7) | SRQDUQ657 |

| Launch MSRP | not listed | $384 |

Where Each One Wins

The recorded benchmark set gives the AMD Ryzen 5 PRO 8645HS wins in every measured category, simply because the Intel Core 7 251E has no benchmark scores. The largest AMD wins in the database are data compression at 265,826, integer math at 72,740, floating point math at 45,481, random string sorting at 35,472, multithread at 23,569, extended instructions at 21,212, data encryption at 17,387, physics at 1,208, and Cinebench R23 multi-core at 19,742. Single-thread results are also recorded: Cinebench R23 single-core 2,787 and PassMark single-thread 3,858.

The Intel part's specification advantages do not appear as wins because there are no measured results. The database's wins counters are 0 for both, and the head-to-head benchmark array is empty. Thus, for any workload represented in the database, the AMD part is the only one with a score. For workloads not represented, the data cannot assign a win to either part.

AMD therefore has benchmark-supported wins in multi-thread rendering, integer math, floating point math, encryption, compression, sorting, and physics simulation. Intel has no benchmark-supported win in the database, but its listed specifications include 24 cores, 32 threads, a 5.60 boost clock, 36 MB L3, DDR4 and DDR5 support, and PCIe Gen 5. Those specifications are not benchmark wins.

The Verdict

The database comparison is one-sided. The AMD Ryzen 5 PRO 8645HS has an average benchmark score of 30,879, an 82nd percentile rank, and a complete set of Cinebench and PassMark results. The Intel Core 7 251E has no benchmark scores, an average benchmark score of 0, and a 50th percentile rank. Based on measured data, the AMD part is the only processor with demonstrated performance. Based on listed specifications, the Intel part offers more cores, more threads, a higher boost clock, more cache, DDR4 compatibility, and PCIe Gen 5 support, but the database provides no benchmark evidence for those advantages. A strictly data-driven selection would choose the AMD Ryzen 5 PRO 8645HS for any workload with recorded scores; the Intel Core 7 251E cannot be chosen on the basis of benchmark results because none exist.