AMD Ryzen 7 3700X vs Intel Core i7-12800HX Comparison

The AMD Ryzen 7 3700X and Intel Core i7-12800HX are both 84th-percentile CPUs by average benchmark score, yet they are built for entirely different machines and workloads. The data shows a decisive performance split: the Intel part wins every single head-to-head benchmark in this comparison, while the AMD chip counters with a far lower power envelope and a desktop platform. This analysis breaks down the raw numbers, the architectural reasons behind them, and which buyer each processor actually serves.

Head-to-Head Benchmarks

The Intel Core i7-12800HX dominates the benchmark comparison, winning all 13 shared tests. The largest gap appears in passmark_floating_point_math, where Intel scores 82122 against AMD’s 39005, a 52.5% advantage. This is not a marginal lead; it signals a massive difference in sustained floating-point throughput, which matters for scientific computing and physics simulations. The passmark_integer_math test tells a similar story: Intel’s 109968 beats AMD’s 66399 by 39.6%, showing a strong lead in general arithmetic workloads.

Multi-core rendering heavily favors Intel as well. In cinebench_r15_multicore, the i7-12800HX posts 3383 versus the 3700X’s 2092, a 38.2% win. The passmark_multithread score of 31585 for Intel against 22458 for AMD is a 28.9% gap, and the passmark_physics test shows Intel ahead by 32.2% (1743 vs 1181). For anyone running heavy multi-threaded tasks like video encoding or 3D rendering, the Intel chip is clearly the stronger performer.

Single-thread performance is also Intel’s territory. The cinebench_r15_singlecore result of 260 for Intel versus 204 for AMD is a 21.5% lead, while passmark_single_thread shows 3711 against 2656, a 28.4% difference. This carries over to the passmark_find_prime_numbers test, where Intel wins by 8.3% (108 vs 99), and passmark_data_compression, where Intel’s 387535 beats AMD’s 296379 by 23.5%. Even in passmark_random_string_sorting, Intel leads by 24.3% (42453 vs 32131). The smallest gap is in passmark_data_encryption, but Intel still wins by 14% (21972 vs 18900). The data is unambiguous: the i7-12800HX is faster in every measured category.

Architecture Differences

The performance gap stems from fundamentally different designs. The AMD Ryzen 7 3700X uses the Zen 2 architecture on TSMC’s 7 nm process, with a 74 mm² die size and 3,800 million transistors. It is a desktop part with 8 cores and 16 threads, running on the AMD Socket AM4 platform. Its cache layout is 64 KB L1 per core, 512 KB L2 per core, and a 32 MB L3 cache.

The Intel Core i7-12800HX is a mobile processor built on Alder Lake architecture using Intel’s 10 nm process, with a 215 mm² die. It packs 16 cores and 24 threads—a hybrid design that pairs performance and efficiency cores—on the Intel BGA 1964 socket. Its caches are larger per core: 80 KB L1 and 1.25 MB L2 per core, though the shared L3 is smaller at 25 MB. The Intel chip also supports both DDR4 and DDR5 memory, while the AMD part is limited to DDR4. Intel integrates UHD Graphics 770, whereas the 3700X has no integrated graphics at all.

Another key split is memory bandwidth and PCIe support. The AMD chip offers 51.2 GB/s of memory bandwidth and PCIe Gen 4 with 24 lanes. The Intel part’s memory bandwidth is not listed in the data, but it supports PCIe Gen 5 with 20 lanes. The AMD processor has a 65W TDP, while the Intel chip is rated at 55W—a notable point given the Intel chip’s higher performance, though the mobile vs desktop context changes how thermals are managed.

The process node difference is significant: AMD’s 7 nm versus Intel’s 10 nm. While the Intel chip uses a physically larger die (215 mm² vs 74 mm²), it compensates with a higher core count and clock speeds. The base clock of the 3700X is 3.60 GHz, boosting to 4.40 GHz. The i7-12800HX has a base clock of 2000.00 MHz, but boosts to 4.80 GHz—a higher peak frequency that helps explain its single-thread advantage.

The Verdict

The data points to one clear conclusion for raw performance: the Intel Core i7-12800HX is the faster processor in every benchmark recorded. If your priority is maximum throughput in multi-threaded workloads, single-thread responsiveness, or even encryption and compression tasks, the i7-12800HX wins outright. The 52.5% lead in floating-point math and 39.6% in integer math are not small margins; they represent a generational leap in compute capability.

However, the AMD Ryzen 7 3700X is not without its merits. It is a desktop processor with a 65W TDP, which is only 10W higher than the mobile Intel part, yet it offers 8 cores and 16 threads. For a desktop builder who values a lower power draw and the mature AM4 platform—with its PCIe Gen 4 support—the 3700X remains a viable option, especially if you already own an AM4 motherboard. The Intel chip requires a BGA 1964 socket, meaning it is soldered to the board and not upgradeable in the traditional sense.

The choice comes down to platform versus performance. If you need a mobile workstation or a laptop with high core counts, the i7-12800HX is the obvious pick based on its benchmark dominance. If you are building a desktop on a budget, the 3700X offers a capable 8-core setup with a lower TDP, but you will sacrifice significant performance in every measured test. The data does not support choosing the 3700X for speed; it only supports choosing it for platform fit and power efficiency.

FAQ

Q: Which processor is faster in multi-core benchmarks?

A: The Intel Core i7-12800HX wins all multi-core tests. It scores 3383 in cinebench_r15_multicore versus 2092 for the AMD Ryzen 7 3700X, a 38.2% lead. In passmark_multithread, Intel scores 31585 against 22458, a 28.9% gap.

Q: How do the single-core scores compare?

A: Intel is ahead by 21.5% in cinebench_r15_singlecore (260 vs 204) and by 28.4% in passmark_single_thread (3711 vs 2656). The Intel chip’s 4.80 GHz boost clock outpaces the AMD’s 4.40 GHz.

Q: What is the difference in core and thread counts?

A: The AMD Ryzen 7 3700X has 8 cores and 16 threads. The Intel Core i7-12800HX has 16 cores and 24 threads, giving it a 2x core advantage and 1.5x thread advantage.

Q: Do these processors support the same memory?

A: No. The AMD chip supports only DDR4, while the Intel chip supports both DDR4 and DDR5. Both use dual-channel memory buses.

Q: Which processor has integrated graphics?

A: Only the Intel Core i7-12800HX includes integrated graphics, specifically UHD Graphics 770. The AMD Ryzen 7 3700X has no integrated graphics, so a discrete GPU is required.

Q: What are the TDP ratings for each chip?

A: The AMD Ryzen 7 3700X has a 65W TDP, while the Intel Core i7-12800HX has a 55W TDP. The AMD chip is a desktop part, and the Intel chip is a mobile part.

Where Each One Wins

AMD Ryzen 7 3700X wins on:

• Desktop platform flexibility: It uses the AMD Socket AM4, which is a standard socketed desktop platform, allowing for traditional motherboard upgrades and cooler swaps.
• PCIe Gen 4 lane count: It offers 24 lanes of PCIe Gen 4, which is more than the Intel chip’s 20 lanes of PCIe Gen 5, potentially beneficial for multiple NVMe drives or GPUs.
• Memory bandwidth efficiency: It has a rated memory bandwidth of 51.2 GB/s, while the Intel chip’s bandwidth is not listed, suggesting AMD has a defined advantage in this metric.
• Lower die size: At 74 mm², it is far smaller than Intel’s 215 mm², which can be relevant for thermal density in some chassis.

Intel Core i7-12800HX wins on:

• Every benchmark in the comparison: From floating-point math to data compression, the Intel chip leads by margins ranging from 8.3% to 52.5%.
• Core and thread count: With 16 cores and 24 threads, it offers double the cores of the AMD part, which is critical for heavily threaded workloads.
• Single-thread performance: The 4.80 GHz boost clock and 28.4% lead in passmark_single_thread make it better for lightly threaded apps and games.
• Integrated graphics: The inclusion of UHD Graphics 770 means the chip can run without a discrete GPU for basic display output, unlike the AMD part.
• Modern memory support: Support for both DDR4 and DDR5 gives system builders more options for memory selection.

Specification Differences

| Specification | AMD Ryzen 7 3700X | Intel Core i7-12800HX |

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

| Cores | 8 | 16 |

| Threads | 16 | 24 |

| Base Clock | 3.60 GHz | 2000.00 MHz |

| Boost Clock | 4.40 GHz | 4.80 GHz |

| TDP | 65W | 55W |

| Socket | AMD Socket AM4 | Intel BGA 1964 |

| Architecture | Zen 2 | Alder Lake |

| Process Node | 7 nm | 10 nm |

| Die Size | 74 mm² | 215 mm² |

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

| L2 Cache | 512 KB (per core) | 1.25 MB (per core) |

| L3 Cache | 32 MB | 25 MB (shared) |

| Memory Support | DDR4 | DDR4, DDR5 |

| Memory Bandwidth | 51.2 GB/s | Not listed |

| PCIe | Gen 4, 24 Lanes | Gen 5, 20 Lanes |

| Integrated Graphics | None | UHD Graphics 770 |

| Market Segment | Desktop | Mobile |

| Launch MSRP | $329 | $457 |