AMD Ryzen 9 3900 vs Intel Core i7-14650HX Comparison

The Intel Core i7-14650HX and AMD Ryzen 9 3900 represent two distinct approaches to high-core-count computing, separated by several years of architectural evolution. The data shows a clear overall winner in the Intel part, which secures 13 benchmark victories against 4 for the AMD processor. However, the AMD Ryzen 9 3900 retains specific strengths that make this comparison more nuanced than the raw win tally suggests.

Head-to-Head Benchmarks

The most decisive victories for the Intel Core i7-14650HX come in single-threaded workloads. In PassMark single-thread testing, the Intel part scores 3862 against 2604 for AMD, a 48.3% advantage. This gap is nearly identical in the Cinebench suite, where the Intel processor leads by 14.1% in both R15 and R23 single-core tests, posting scores of 421 and 4188 respectively versus 369 and 3669 for the Ryzen 9 3900.

Multi-core results follow a similar pattern, though with a smaller margin. Across all three Cinebench versions (R15, R20, R23), the Intel Core i7-14650HX maintains a consistent 14.2% lead in multicore performance. The R23 multicore score of 29669 for Intel versus 25988 for AMD demonstrates that the newer architecture translates its thread-count advantage into tangible rendering performance. PassMark multithread testing confirms this, with Intel scoring 34927 versus 30586, a 14.2% edge.

The largest single delta appears in PassMark floating-point math, where Intel scores 88746 against 56730, a 56.4% advantage. This suggests a substantially more capable FPU design. Integer math also favors Intel heavily, with scores of 122004 versus 97698, a 24.9% lead. PassMark physics shows a 44.7% advantage for Intel (2339 versus 1617), indicating superior simulation and physics-acceleration capabilities.

The AMD Ryzen 9 3900’s wins are narrower but notable. Its biggest victory comes in PassMark find prime numbers, where it scores 203 versus 161, a 20.7% advantage. Data encryption also favors AMD, with 26657 versus 23949, a 10.2% lead. Extended instructions show a 3.6% AMD edge (26073 versus 25139), and random string sorting is essentially tied, with AMD ahead by just 1.1% (44902 versus 44413). Data compression is nearly identical, with Intel winning by a razor-thin 0.3% (414971 versus 413887).

Architecture Differences

The Intel Core i7-14650HX is built on Raptor Lake architecture using a 10 nm process at Intel’s own foundry. It features 16 cores and 24 threads, with a base clock of 2.20 GHz and a boost clock of 5.20 GHz. The chip carries 30 MB of shared L3 cache, with 2 MB of L2 per core and 80 KB of L1 per core. It supports both DDR4 and DDR5 memory in dual-channel mode and includes ECC memory support. The integrated UHD Graphics 710 provides basic display output, and PCIe connectivity is Gen 5 with 16 lanes from the CPU. The die size is 257 mm², and the socket is Intel BGA 1964, indicating a mobile-focused design with a 55 W TDP.

The AMD Ryzen 9 3900 uses Zen 2 architecture (Matisse) built on a 7 nm process at TSMC. It has 12 cores and 24 threads, with a base clock of 3.10 GHz and a boost clock of 4.30 GHz. The L3 cache is a larger 64 MB shared pool, but L2 is smaller at 512 KB per core, and L1 is 64 KB per core. It supports only DDR4 memory in dual-channel mode with a memory bandwidth of 51.2 GB/s, and lacks ECC support. There is no integrated graphics, requiring a discrete GPU. PCIe connectivity is Gen 4 with 24 lanes from the CPU. The chip uses two 74 mm² dies (totaling 7,600 million transistors) on the AMD Socket AM4 platform, with a 65 W TDP and a desktop market segment.

Where Each One Wins

The Intel Core i7-14650HX is the clear choice for workloads that benefit from high single-thread frequency and modern vector processing. The 48.3% lead in PassMark single-thread performance, combined with 56.4% and 24.9% advantages in floating-point and integer math respectively, makes it suitable for scientific computing, financial modeling, and any application with heavy arithmetic operations. The 44.7% physics advantage also points to strong performance in simulation and game-physics tasks. The consistent 14.2% multicore lead across Cinebench versions indicates solid all-around rendering performance.

The AMD Ryzen 9 3900 retains specific niches despite its older architecture. Its 20.7% lead in prime-number finding suggests superior integer-based cryptographic or number-theoretic workloads. The 10.2% encryption advantage reinforces this, indicating that security-focused tasks may run better on the AMD chip. Extended instructions (3.6% lead) and random string sorting (1.1% lead) show that certain specialized instruction patterns still favor the Zen 2 design. For users running encryption-heavy services or applications that rely on specific cryptographic primitives, the Ryzen 9 3900 remains competitive.

FAQ

Q: How significant is the Intel Core i7-14650HX’s single-thread advantage?

A: The Intel chip leads by 48.3% in PassMark single-thread testing (3862 versus 2604) and by 14.1% in Cinebench R15 and R23 single-core tests. This represents a substantial generational improvement in per-core performance.

Q: Does the AMD Ryzen 9 3900 beat the Intel chip in any major benchmark?

A: Yes. The AMD processor wins PassMark data encryption by 10.2%, find prime numbers by 20.7%, extended instructions by 3.6%, and random string sorting by 1.1%. These are focused wins in specific workload categories.

Q: What is the core and thread configuration difference?

A: The Intel Core i7-14650HX has 16 cores and 24 threads, while the AMD Ryzen 9 3900 has 12 cores and 24 threads. Both support the same thread count, but Intel uses four additional physical cores.

Q: How do the cache hierarchies compare?

A: Intel provides 30 MB of shared L3 cache with 2 MB of L2 per core, while AMD offers a larger 64 MB of L3 cache but smaller 512 KB of L2 per core. Intel also has larger 80 KB L1 per core versus AMD’s 64 KB.

Q: Which processor has a higher boost clock?

A: The Intel Core i7-14650HX boosts to 5.20 GHz, which is 0.90 GHz higher than the AMD Ryzen 9 3900’s 4.30 GHz boost clock. This contributes directly to its single-thread performance lead.

Q: Are both processors currently in production?

A: Yes, both the Intel Core i7-14650HX and the AMD Ryzen 9 3900 have a production status of Active. The Intel chip was released on 2024-01-07, while the AMD chip launched on 2019-09-23.

The Verdict

The benchmark data strongly favors the Intel Core i7-14650HX for most computing scenarios. It wins 13 of 17 head-to-head comparisons, with its most decisive margins in single-thread performance (48.3%), floating-point math (56.4%), and physics (44.7%). The consistent 14.2% multicore advantage across all Cinebench versions indicates that its 16-core configuration outperforms the 12-core AMD part in rendering and parallel workloads. The newer architecture, with a 5.20 GHz boost clock and 10 nm process, delivers superior per-core capabilities that translate to broad application wins.

The AMD Ryzen 9 3900 should be selected specifically for workloads that match its proven strengths: encryption, prime-number operations, and certain extended instruction patterns. Its 64 MB L3 cache and 7 nm process provide advantages in these narrow areas, and its desktop platform with 24 PCIe Gen 4 lanes may suit systems requiring more expansion options. However, for users needing the best single-thread responsiveness, highest multi-thread throughput in rendering, or superior arithmetic performance, the Intel Core i7-14650HX is the empirically stronger choice based on the available benchmark data.

Specification Differences

| Specification | Intel Core i7-14650HX | AMD Ryzen 9 3900 |

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

| Cores | 16 | 12 |

| Threads | 24 | 24 |

| Base Clock | 2.20 GHz | 3.10 GHz |

| Boost Clock | 5.20 GHz | 4.30 GHz |

| TDP | 55 W | 65 W |

| Socket | Intel BGA 1964 | AMD Socket AM4 |

| Architecture | Raptor Lake | Zen 2 |

| Codename | Raptor Lake-HX | Matisse |

| Process Node | 10 nm | 7 nm |

| Foundry | Intel | TSMC |

| Die Size | 257 mm² | 2x 74 mm² |

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

| L2 Cache | 2 MB (per core) | 512 KB (per core) |

| L3 Cache | 30 MB (shared) | 64 MB |

| Memory Support | DDR4, DDR5 | DDR4 |

| Memory Bus | Dual-channel | Dual-channel |

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

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes (CPU only) | Gen 4, 24 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 710 | None |

| Market Segment | Mobile | Desktop |

| Release Date | 2024-01-07 | 2019-09-23 |

| Transistors | Not specified | 7,600 million |

| Part Number | SRMXH | 100-000000070 |