AMD Ryzen 7 PRO 8840U vs Intel Core i5-14450HX Comparison

The AMD Ryzen 7 PRO 8840U and Intel Core i5-14450HX are two mobile processors that end up in a statistical dead heat on average benchmark scores, yet they achieve that parity through fundamentally different strengths. The AMD chip wins 11 of the 17 head-to-head comparisons, but the Intel part takes the remaining 6 with larger margins in specific workloads. The data shows a clear split: the Ryzen 7 PRO 8840U dominates integer-heavy and encryption tasks, while the Core i5-14450HX pulls ahead in floating-point math, physics simulations, and prime number calculations. With the AMD chip posting an average benchmark score of 32233 against the Intel’s 32040, the difference is less than 1%, placing both in the same performance tier—83rd and 82nd percentile of all CPUs, respectively.

Where Each One Wins

The AMD Ryzen 7 PRO 8840U is the clear winner for general productivity and security-related workloads. Its largest victory comes in PassMark integer math, where it scores 88339 against Intel’s 78330—a 12.8% advantage. This pattern repeats in data encryption (16441 vs 15574, a 5.6% win) and extended instructions (19132 vs 17207, an 11.2% win). For users running code compilation, database operations, or any task that relies on integer arithmetic, the AMD chip consistently delivers better results. Its random string sorting score of 33109 also beats Intel’s 29565 by 12%, indicating stronger memory and cache handling for pointer-chasing workloads.

The Intel Core i5-14450HX takes the crown in math-heavy scientific and physics workloads. Its floating-point math score of 58037 surpasses the AMD’s 50746 by 12.6%, a substantial margin. The physics test shows an even bigger gap: 1475 vs 1174, a 20.4% advantage for Intel. The find prime numbers test is the largest single win for either chip, with Intel scoring 98 against AMD’s 76—a 22.4% difference. These results suggest the Intel part is better suited for rendering, scientific computing, and any workload that leverages AVX-512-style floating-point throughput.

In the all-important Cinebench suite, the AMD chip wins every single test, but by narrow margins. The R23 multicore score is 20254 vs 20108 (0.7% lead), while the single-core score is 2859 vs 2838 (0.7% lead). These are effectively ties, but they indicate the AMD chip has a slight edge in both lightly-threaded and fully-threaded rendering tasks. The PassMark multithread score also goes to AMD (23850 vs 23680), reinforcing its narrow but consistent lead in overall throughput.

Architecture Differences

The two processors come from opposite design philosophies. The AMD Ryzen 7 PRO 8840U uses 8 cores with 16 threads, built on the Zen 4 architecture codenamed Hawk Point. It is manufactured on TSMC’s 4 nm process, packing 25,000 million transistors into a 178 mm² die. The Intel Core i5-14450HX uses 10 cores with 16 threads, based on Raptor Lake-HX architecture. It uses Intel’s 10 nm process and has a larger 257 mm² die size. The core count difference is notable: Intel has two more physical cores, but both chips expose the same 16 threads, meaning the AMD part relies on its 8-core/16-thread configuration while Intel uses a mix of performance and efficiency cores to reach 16 threads.

Cache configuration differs significantly. The AMD chip provides 64 KB of L1 cache and 1 MB of L2 cache per core, with a shared 16 MB L3 cache. The Intel chip offers 80 KB of L1 and 2 MB of L2 per core, with a larger 20 MB shared L3 cache. The extra L3 capacity likely helps Intel in some memory-intensive workloads, though the AMD chip’s smaller die and higher efficiency may compensate elsewhere.

Memory support also diverges. The AMD Ryzen 7 PRO 8840U supports DDR5 only, with dual-channel memory and a measured bandwidth of 89.6 GB/s. The Intel Core i5-14450HX supports both DDR4 and DDR5, also dual-channel, though no bandwidth figure is listed. Both support ECC memory, making them suitable for workstation use. PCIe connectivity differs as well: AMD offers Gen 4 with 20 lanes, while Intel provides Gen 5 with 16 lanes, giving Intel a bandwidth advantage for future NVMe drives and GPUs.

The integrated graphics are another major differentiator. The AMD chip features the Radeon 780M, while Intel uses the UHD Graphics 710. The AMD solution is widely considered more capable for gaming and media work, though the benchmark data does not include graphics tests. The Intel chip is unlocked for overclocking, while the AMD chip is locked, appealing to enthusiasts who want manual tuning.

FAQ

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 7 PRO 8840U boosts to 5.10 GHz, while the Intel Core i5-14450HX reaches 4.80 GHz. The AMD chip also has a higher base clock at 3.30 GHz versus Intel’s 2.40 GHz.

Q: How do the two chips compare in single-threaded performance?

A: The PassMark single-thread test shows a virtual tie: the Intel scores 3643 against AMD’s 3641, a 0.1% difference. In Cinebench R23 single-core, AMD wins 2859 vs 2838, a 0.7% edge. The data indicates neither chip has a meaningful lead in single-threaded workloads.

Q: What is the thermal design power difference?

A: The AMD Ryzen 7 PRO 8840U is rated at 28 W TDP, while the Intel Core i5-14450HX is rated at 55 W. The Intel chip draws nearly double the power, which is reflected in its larger die and higher core count.

Q: Which processor is better for encryption tasks?

A: The AMD chip is clearly superior in data encryption, scoring 16441 versus Intel’s 15574, a 5.6% advantage. This suggests the AMD hardware-accelerated AES instructions are more effective in this workload.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen 7 PRO 8840U and Intel Core i5-14450HX support ECC memory, making them viable for error-sensitive workstation tasks.

Specification Differences

| Specification | AMD Ryzen 7 PRO 8840U | Intel Core i5-14450HX |

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

| Cores | 8 | 10 |

| Base Clock | 3.30 GHz | 2.40 GHz |

| Boost Clock | 5.10 GHz | 4.80 GHz |

| TDP | 28 W | 55 W |

| Socket | AMD Socket FP7 | Intel BGA 1964 |

| Process Node | 4 nm (TSMC) | 10 nm (Intel) |

| Die Size | 178 mm² | 257 mm² |

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

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

| L3 Cache (shared) | 16 MB | 20 MB |

| Memory Support | DDR5 | DDR4, DDR5 |

| Memory Bandwidth | 89.6 GB/s | Not listed |

| PCIe | Gen 4, 20 Lanes | Gen 5, 16 Lanes |

| Integrated Graphics | Radeon 780M | UHD Graphics 710 |

| Multiplier Unlocked | No | Yes |

| Part Number | 100-000001317, 100-000001377 | SRMXK |

Head-to-Head Benchmarks

The biggest win for the AMD Ryzen 7 PRO 8840U comes in PassMark integer math, where it scores 88339 against Intel’s 78330—a 12.8% lead. This is followed closely by the extended instructions test, where AMD wins 19132 vs 17207 (11.2%). The random string sorting test shows a 12% advantage for AMD (33109 vs 29565), and data encryption gives AMD a 5.6% win (16441 vs 15574). In Cinebench, the AMD chip wins all six tests, but the margins are slim: R15 multicore (2041 vs 2026, 0.7%), R15 single-core (288 vs 285, 1.1%), R20 multicore (8506 vs 8445, 0.7%), R20 single-core (1200 vs 1191, 0.8%), R23 multicore (20254 vs 20108, 0.7%), and R23 single-core (2859 vs 2838, 0.7%). The PassMark multithread test also goes to AMD by a narrow 0.7% margin (23850 vs 23680).

The Intel Core i5-14450HX counters with its own set of decisive wins. The find prime numbers test is its largest victory: 98 vs 76, a 22.4% advantage. The physics test shows Intel winning 1475 vs 1174, a 20.4% lead. Floating-point math goes to Intel by 58037 vs 50746, a 12.6% margin. Data compression is another Intel win, with 278538 vs 272664 (2.1%). The PassMark single-thread test gives Intel a razor-thin 0.1% edge (3643 vs 3641), the same result as the singlethread test. These wins are concentrated in math-heavy, physics-based, and compression workloads, while AMD’s wins span a broader range of integer and general-purpose tasks.

The Verdict

The benchmark data points to a clear conclusion: the AMD Ryzen 7 PRO 8840U is the better all-around processor, winning 11 of 17 tests and taking the slightly higher average score (32233 vs 32040). Its wins in integer math, encryption, extended instructions, and random string sorting represent the kinds of workloads found in everyday productivity, database management, and security applications. The Cinebench dominance, however marginal, also suggests better rendering performance for creative professionals.

The Intel Core i5-14450HX is the specialist choice for floating-point-heavy and physics-based workloads. Its 12.6% lead in floating-point math and 20.4% lead in physics make it the better option for scientific simulations, certain financial modeling, and 3D rendering that relies on floating-point calculations. The 22.4% win in find prime numbers is notable for anyone running primality testing or similar number-theoretic tasks.

For most users, the AMD chip’s combination of lower TDP (28 W vs 55 W), higher clock speeds, and broader benchmark wins makes it the recommended choice. The Intel chip’s extra two physical cores and larger L3 cache do not translate into overall superiority, and its higher power draw is a significant drawback for mobile applications. Those who specifically need floating-point throughput or plan to overclock (since the Intel chip is unlocked) may prefer the Core i5-14450HX, but the data shows the AMD Ryzen 7 PRO 8840U delivers more consistent performance across a wider range of tasks.