AMD Ryzen 5 7645HX vs Intel Core i5-12600HX Comparison

The AMD Ryzen 5 7645HX and Intel Core i5-12600HX are two mobile processors aimed at high-performance laptops, but they achieve their results through very different designs. The data shows a clear split: AMD’s chip wins the majority of benchmark comparisons, taking 9 out of 15 head-to-head tests, while Intel counters with decisive victories in a few key heavy-threaded and single-core workloads. The Ryzen 5 7645HX sits at the 84th percentile of all CPUs, just ahead of the Core i5-12600HX at the 83rd percentile, with average benchmark scores of 33668 and 33375, respectively.

Where Each One Wins

The AMD Ryzen 5 7645HX establishes its dominance in a wide range of PassMark workloads that favor its architecture. Its largest victory comes in the `passmark_find_prime_numbers` test, where it scores 178 versus Intel’s 83, a staggering 114.5% advantage. This indicates a massive lead in integer-heavy, latency-sensitive calculations. Similarly, in `passmark_extended_instructions`, the AMD chip scores 22969, which is 32.6% higher than Intel’s 17328, showing superior execution of complex instruction sets. The Ryzen also wins in data compression (302256 vs 292256, a 3.4% lead) and data encryption (17900 vs 17506, a 2.3% lead), making it the stronger choice for archival, compression, and security-related tasks.

The Intel Core i5-12600HX, however, takes the crown in the most popular rendering benchmark. In `cinebench_cinebench_r23_multicore`, Intel scores 20714, a massive 32.5% advantage over AMD’s 13985. This is a crucial win for content creators and engineers who rely on Cinebench as a proxy for 3D rendering and video encoding performance. Intel also wins in floating-point math (58378 vs 48798, a 16.4% lead) and integer math (79339 vs 77432, a 2.4% lead), suggesting better raw number-crunching throughput in certain scientific and financial applications. The Intel part also edges out a narrow victory in `passmark_physics` (1504 vs 1497, a 0.5% lead).

For overall multithreaded performance in the PassMark suite, the AMD Ryzen 5 7645HX wins with a score of 26476 versus Intel’s 24681, a 7.3% advantage. This is complemented by a 7.8% win in single-thread performance (3907 vs 3623), meaning the AMD chip generally feels snappier in everyday use and lightly-threaded applications. The pattern is clear: AMD wins in most security, compression, and single-core tasks, while Intel wins decisively in Cinebench and floating-point math.

Architecture Differences

The two processors are built on fundamentally different foundations. The AMD Ryzen 5 7645HX is part of the 7000 series, using the Zen 4 architecture on a 5 nm process node from TSMC. Its codename is Dragon Range, and it features 6 cores and 12 threads. In contrast, the Intel Core i5-12600HX is a Core 12th Gen part using the Alder Lake architecture on Intel’s 10 nm node, with the codename Alder Lake-HX. The Intel chip has 12 cores and 16 threads, which explains its strong showing in heavily multithreaded workloads like Cinebench R23.

Cache configurations differ significantly. The AMD chip has 64 KB of L1 cache per core, 1 MB of L2 per core, and 32 MB of shared L3 cache. The Intel chip has 80 KB of L1 per core, 1.25 MB of L2 per core, but only 18 MB of shared L3 cache. The larger L3 pool on the AMD part likely contributes to its wins in data compression and random string sorting (34434 vs 33110, a 4% lead), as more cache reduces memory access latency for repetitive data patterns. The Intel chip’s larger L2 cache per core may help in floating-point math where data locality is higher.

Process technology and die size also tell a story. The AMD Ryzen 5 7645HX has a die size of 71 mm² and contains 6,570 million transistors, while the Intel Core i5-12600HX has a much larger die at 215 mm² (transistor count not listed). The smaller 5 nm process allows AMD to pack its 6 cores into a tiny area, whereas Intel’s 10 nm process and 12-core layout require a significantly larger physical die. This difference in efficiency is reflected in their TDPs: the AMD chip is rated at 45 W, while the Intel chip is rated at 55 W.

Memory support also diverges. The AMD Ryzen 5 7645HX supports DDR5 only, with a dual-channel memory bus and a maximum bandwidth of 83.2 GB/s. The Intel Core i5-12600HX supports both DDR4 and DDR5, also dual-channel, but its memory bandwidth figure is not listed. Both support ECC memory. On the PCIe front, AMD offers Gen 5 with 28 lanes (CPU only), while Intel also offers Gen 5 but with 20 lanes (CPU only). The AMD chip’s higher lane count gives it more headroom for multiple NVMe drives or discrete GPUs. Integrated graphics differ as well: AMD uses the Radeon 610M, while Intel uses UHD Graphics 770.

Head-to-Head Benchmarks

The most dramatic single benchmark result is in `cinebench_cinebench_r23_multicore`. The Intel Core i5-12600HX scores 20714, which is 32.5% higher than the AMD Ryzen 5 7645HX’s 13985. This is a massive gap that any professional doing CPU-rendering will notice. Similarly, in `cinebench_cinebench_r23_singlecore`, Intel wins with 2924 versus AMD’s 1809, a 38.1% advantage. This is surprising given that AMD wins the PassMark single-thread test by 7.8%, but the Cinebench R23 single-core test clearly favors Intel’s architecture.

The AMD Ryzen 5 7645HX answers back with a 114.5% blowout in `passmark_find_prime_numbers`, scoring 178 versus Intel’s 83. This is a workload that heavily rewards AMD’s Zen 4 design. In `passmark_extended_instructions`, AMD also wins by 32.6% (22969 vs 17328), showing superiority in AVX-512 or similar extended instruction processing. The AMD chip also takes `cinebench_cinebench_r15_multicore` by 9.1% (2276 vs 2087), which is notable because Intel wins the newer R23 multicore test by such a large margin. This suggests that the workload scaling between the two Cinebench versions differs significantly for these parts.

In the PassMark suite, AMD’s wins are consistent but often narrow. It takes `passmark_multithread` with 26476 versus 24681 (7.3% lead), `passmark_single_thread` with 3907 versus 3623 (7.8% lead), and `passmark_random_string_sorting` with 34434 versus 33110 (4% lead). Intel’s wins in PassMark are limited to `passmark_floating_point_math` (58378 vs 48798, a 16.4% lead) and `passmark_integer_math` (79339 vs 77432, a 2.4% lead), plus the negligible `passmark_physics` win (1504 vs 1497, 0.5%). The Cinebench R15 single-core test goes to Intel by a hair (294 vs 289, a 1.7% lead).

FAQ

Q: Which processor is faster in Cinebench R23 multicore?

A: The Intel Core i5-12600HX is significantly faster, scoring 20714 compared to the AMD Ryzen 5 7645HX’s 13985, a 32.5% advantage.

Q: Which CPU wins the most benchmark comparisons?

A: The AMD Ryzen 5 7645HX wins 9 out of 15 head-to-head benchmarks, while the Intel Core i5-12600HX wins 6.

Q: What is the biggest performance gap in favor of the AMD chip?

A: In the `passmark_find_prime_numbers` test, the AMD Ryzen 5 7645HX scores 178 versus Intel’s 83, a 114.5% advantage.

Q: How do their core counts differ?

A: The AMD Ryzen 5 7645HX has 6 cores and 12 threads, while the Intel Core i5-12600HX has 12 cores and 16 threads.

Q: Which processor supports more memory types?

A: The Intel Core i5-12600HX supports both DDR4 and DDR5, while the AMD Ryzen 5 7645HX supports DDR5 only.

Q: What is the launch MSRP of the Intel processor?

A: The launch MSRP of the Intel Core i5-12600HX is $284. The AMD Ryzen 5 7645HX does not have a listed launch MSRP.

Specification Differences

| Specification | AMD Ryzen 5 7645HX | Intel Core i5-12600HX |

| :--- | :--- | :--- |

| Cores | 6 | 12 |

| Threads | 12 | 16 |

| Base Clock | 4.00 GHz | 2.50 GHz |

| Boost Clock | 5.00 GHz | 4.60 GHz |

| TDP | 45 W | 55 W |

| Socket | AMD Socket FL1 | Intel BGA 1964 |

| Architecture | Zen 4 | Alder Lake |

| Process Node | 5 nm (TSMC) | 10 nm (Intel) |

| Die Size | 71 mm² | 215 mm² |

| Transistors | 6,570 million | Not listed |

| L1 Cache (per core) | 64 KB | 80 KB |

| L2 Cache (per core) | 1 MB | 1.25 MB |

| L3 Cache (shared) | 32 MB | 18 MB |

| Memory Support | DDR5 | DDR4, DDR5 |

| Memory Bandwidth | 83.2 GB/s | Not listed |

| PCIe | Gen 5, 28 Lanes (CPU only) | Gen 5, 20 Lanes (CPU only) |

| Integrated Graphics | Radeon 610M | UHD Graphics 770 |

| Multiplier Unlocked | No | Yes |

| Part Number | 100-000000872 | SRLGJ |

| Launch MSRP | Not listed | $284 |