AMD Ryzen 9 7940HX vs Intel Core i7-14700KF Comparison

The Intel Core i7-14700KF and AMD Ryzen 9 7940HX are two of the most compelling high-end processors on the market, separated by an average benchmark score of just 0.4% in favor of the Intel part. Both sit at the 94th percentile of all CPUs, making them near-peers in overall performance. However, the data reveals a stark divergence in workload preferences: the Intel processor dominates heavily threaded and single-threaded tasks, while the AMD chip counters with decisive victories in specialized compute workloads. This is not a simple "fast versus slow" comparison; it is a study in architectural philosophy and market positioning.

Head-to-Head Benchmarks

The most striking result in the dataset is in Cinebench R23 multi-core, where the Intel Core i7-14700KF scores 44,167 points against the AMD Ryzen 9 7940HX's 29,400. That is a 50.2% advantage for Intel, a massive gap that suggests the 14700KF is in a different performance tier for heavily threaded rendering workloads. The single-core result is even more lopsided: 6,235 versus 1,807, a 245% delta. This enormous single-core lead is unusual and points to a major difference in clock behavior or benchmark conditions between the two platforms.

In PassMark's multi-thread test, however, the AMD Ryzen 9 7940HX takes a narrow win, scoring 53,204 versus 52,425, a 1.5% edge. This indicates that in certain mixed-thread workloads, the AMD chip's higher thread count (32 versus 28) can overcome the Intel part's raw core-count advantage. The AMD processor also wins in integer math (202,883 versus 183,056, a 9.8% lead) and random string sorting (81,775 versus 74,723, an 8.6% lead), showing strength in data manipulation and algorithmic tasks.

The Intel part strikes back in floating-point math, scoring 134,393 versus 121,383, a 10.7% victory. The physics test is another strong Intel showing, with a 28.9% lead (2,961 versus 2,297). In data compression, the two are virtually tied, with Intel ahead by just 0.2% (694,963 versus 693,741). Interestingly, the AMD chip wins encryption by 4.6% (41,974 versus 40,046) and extended instructions by a substantial 20.3% (51,029 versus 40,660). The prime numbers test also goes to AMD by 22.3% (273 versus 212).

The overall win count is nearly even: Intel takes 7 wins, AMD takes 6. But the magnitude of Intel's Cinebench victories dwarfs the margins of AMD's PassMark wins. The single-thread PassMark result favors Intel by 13.6% (4,480 versus 3,942), confirming that the 14700KF is the stronger choice for latency-sensitive applications. The data suggests that the AMD Ryzen 9 7940HX is a specialized tool, while the Intel Core i7-14700KF is a general-purpose powerhouse.

Architecture Differences

The architectural divide between these two processors is fundamental. The Intel Core i7-14700KF is built on the Raptor Lake architecture, specifically the Raptor Lake-R refresh, and manufactured on Intel's 10 nm process node. It features 20 cores and 28 threads, with a base clock of 3.40 GHz and a boost clock of 5.60 GHz. The AMD Ryzen 9 7940HX, in contrast, uses the Zen 4 architecture with the Dragon Range codename, fabricated by TSMC on a 5 nm process. It has 16 cores and 32 threads, with a lower base clock of 2.40 GHz and a boost clock of 5.20 GHz.

Cache configurations differ significantly. The Intel part allocates 80 KB of L1 cache per core, 2 MB of L2 per core, and 33 MB of shared L3 cache. The AMD chip has 64 KB L1 per core, 1 MB L2 per core, and a much larger 64 MB of L3 cache. This larger L3 cache likely contributes to the AMD chip's strong performance in encryption and extended instruction workloads. The AMD processor also integrates a Radeon 610M GPU, while the Intel part has no integrated graphics, requiring a discrete GPU for display output.

The memory support also diverges. Intel supports both DDR4 and DDR5 memory in a dual-channel configuration, while AMD supports only DDR5 with a quoted memory bandwidth of 83.2 GB/s. The Intel chip uses the LGA 1700 socket, whereas the AMD chip uses the FL1 socket, reflecting their different market segments: desktop versus mobile. The Intel part has a TDP of 125 watts, while the AMD part is rated at just 55 watts, a massive difference that highlights the latter's mobile orientation despite its performance capabilities.

The process node difference is notable: Intel's 10 nm versus TSMC's 5 nm. The AMD chip also lists 13,140 million transistors across a die size of 2x 71 mm², while Intel's die is 257 mm² with no transistor count provided. The PCIe support also differs, with AMD offering Gen 5 with 28 lanes (CPU only) versus Intel's Gen 5 with 16 lanes (CPU only). The AMD chip is unlocked for overclocking, as is the Intel part, but the Intel processor was released on 2023-10-16 with a launch MSRP of $384, while the AMD chip arrived on 2024-01-16 with no listed MSRP.

The Verdict

The benchmark data paints a clear picture. The Intel Core i7-14700KF is the superior processor for users who prioritize raw multi-core rendering performance and single-thread responsiveness. Its 50.2% lead in Cinebench R23 multi-core and 245% lead in single-core are decisive, making it the obvious choice for 3D rendering, video encoding, and applications that rely heavily on a few fast cores. The Intel chip also wins in physics and floating-point math, adding to its appeal for scientific and simulation workloads.

The AMD Ryzen 9 7940HX, despite its lower TDP and mobile pedigree, holds its own in specific areas. Its 20.3% lead in extended instructions and 22.3% lead in prime number finding suggest it is excellent for cryptography, data analysis, and other specialized compute tasks. The AMD chip also wins in integer math and multithread PassMark, indicating strong general-purpose throughput in mixed workloads. However, its single-core deficit of 13.6% in PassMark and catastrophic Cinebench single-core shortfall make it less suitable for everyday desktop responsiveness.

Strictly from the data, the Intel Core i7-14700KF is the better all-around desktop processor. The AMD Ryzen 9 7940HX is a niche performer that excels in specific instruction-heavy tasks but cannot match the Intel part's dominance in mainstream benchmarks. Users who need a high-core-count chip for a laptop or a low-power mobile workstation might prefer the AMD part, but for a desktop build where power limits are less restrictive, the Intel chip's performance wins are too large to ignore. The Intel part's higher TDP is a trade-off, but the benchmark results justify the power draw for performance-critical applications.

Specification Differences

| Specification | Intel Core i7-14700KF | AMD Ryzen 9 7940HX |

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

| Series | Core 14th Gen | 7000 series |

| Cores | 20 | 16 |

| Threads | 28 | 32 |

| Base Clock | 3.40 GHz | 2.40 GHz |

| Boost Clock | 5.60 GHz | 5.20 GHz |

| TDP | 125 W | 55 W |

| Socket | Intel Socket 1700 | AMD Socket FL1 |

| Architecture | Raptor Lake | Zen 4 |

| Codename | Raptor Lake-R | Dragon Range |

| Process Node | 10 nm | 5 nm |

| Foundry | Intel | TSMC |

| Transistors | Not listed | 13,140 million |

| Die Size | 257 mm² | 2x 71 mm² |

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

| L2 Cache | 2 MB (per core) | 1 MB (per core) |

| L3 Cache | 33 MB (shared) | 64 MB |

| Memory Support | DDR4, DDR5 | DDR5 |

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

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes (CPU only) | Gen 5, 28 Lanes (CPU only) |

| Integrated Graphics | None | Radeon 610M |

| Market Segment | Desktop | Mobile |

| Release Date | 2023-10-16 | 2024-01-16 |

| Launch MSRP | $384 | Not listed |

FAQ

Q: Which processor has more cores?

A: The Intel Core i7-14700KF has 20 cores, while the AMD Ryzen 9 7940HX has 16 cores. However, the AMD chip has more threads (32 versus 28).

Q: How much faster is the Intel chip in Cinebench R23 multi-core?

A: The Intel Core i7-14700KF scores 44,167 points, which is 50.2% higher than the AMD Ryzen 9 7940HX's score of 29,400.

Q: Does the AMD processor have a larger cache?

A: Yes. The AMD Ryzen 9 7940HX has 64 MB of L3 cache, nearly double the Intel Core i7-14700KF's 33 MB of shared L3 cache.

Q: What is the TDP difference between the two?

A: The Intel Core i7-14700KF has a TDP of 125 watts, while the AMD Ryzen 9 7940HX has a TDP of just 55 watts.

Q: Which chip wins in PassMark multi-thread performance?

A: The AMD Ryzen 9 7940HX wins, scoring 53,204 versus the Intel Core i7-14700KF's 52,425, a 1.5% difference.

Q: Does the Intel processor have integrated graphics?

A: No. The Intel Core i7-14700KF has no integrated graphics, while the AMD Ryzen 9 7940HX includes a Radeon 610M iGPU.