AMD Ryzen 7 7745HX vs Intel Core Ultra 7 155H Comparison

The Verdict

The benchmark database presents a decisive picture: the AMD Ryzen 7 7745HX wins 14 of the 15 head-to-head comparisons against the Intel Core Ultra 7 155H. This is not a close contest. The AMD part leads by double-digit percentages in the majority of tests, including a 22.8% advantage in Cinebench R23 multi-core and a 38.2% lead in data compression. The Intel chip manages only a single victory, and it is a narrow one at that, a 1.7% edge in PassMark physics.

The Ryzen 7 7745HX is the pick for anyone prioritizing raw CPU throughput, particularly in multi-threaded workloads like rendering, encoding, and scientific computation. Its Cinebench R23 score of 18452.5 versus 15028 for the Intel part represents a substantial gap. The Core Ultra 7 155H, with its lower TDP of 28 watts compared to 55 watts, appears tuned for efficiency, but the data shows it sacrifices significant performance to achieve that. The single-thread results also favor AMD, with a 13.8% lead in PassMark single-thread and a 6.1% lead in Cinebench R23 single-core. For a user who must have the fastest possible processor in this segment, regardless of power draw, the choice is unambiguous.

The Intel Core Ultra 7 155H is not without merit, but its strengths are not visible in this benchmark set. Its sole win in physics scoring suggests a specific optimization in that particular test, but this does not offset the broad deficit elsewhere. The database places both processors at the 83rd percentile among all CPUs, indicating they are both above-average parts. However, within this direct comparison, the AMD processor is the clear performance leader. The data implies that the Intel part's higher core count and thread count (16 cores, 22 threads versus 8 cores, 16 threads) does not translate into a performance advantage in these measured workloads.

Architecture Differences

The two processors represent fundamentally different design philosophies. The AMD Ryzen 7 7745HX is built on the Zen 4 architecture, codenamed Dragon Range, and fabricated on a 5 nm process by TSMC. It is a monolithic design with 8 cores and 16 threads, all of which are full-performance cores. The Intel Core Ultra 7 155H, in contrast, uses the Meteor Lake architecture, built on Intel's 7 nm process. It is a hybrid design with 16 cores and 22 threads, which implies a mix of performance and efficiency cores, a common approach for balancing power consumption.

Cache hierarchies also differ significantly. The AMD chip has 64 KB of L1 cache per core, 1 MB of L2 per core, and a large 32 MB shared L3 pool. The Intel part has a larger L1 cache at 112 KB per core and 2 MB of L2 per core, but its shared L3 is smaller at 24 MB. This difference in L3 capacity could influence workloads that benefit from large, shared caches. The AMD processor's transistor count is listed at 6,570 million on a 71 mm² die, while the Intel chip's transistor count and die size are not recorded in the database.

Memory support is another point of divergence. Both support DDR5 and dual-channel memory buses, but the AMD part offers ECC memory support, while the Intel chip does not. The Intel processor has a higher theoretical memory bandwidth at 89.6 GB/s versus 83.2 GB/s for AMD. PCIe connectivity also differs: the AMD chip provides Gen 5 with 28 lanes (CPU only), whereas the Intel part offers Gen 5 with just 8 lanes (CPU only). This is a substantial difference in expansion capability. The integrated graphics are also different, with AMD using Radeon 610M and Intel using Arc Xe-LPG 128EU, though no benchmark data for these iGPUs is in the database. The AMD chip has an unlocked multiplier, allowing overclocking, while the Intel part is locked.

FAQ

Q: Which processor has a higher multi-core performance in Cinebench R23?

A: The AMD Ryzen 7 7745HX scores 18452.5, which is 22.8% higher than the Intel Core Ultra 7 155H's score of 15028.

Q: Does the Intel Core Ultra 7 155H win any benchmark against the AMD Ryzen 7 7745HX?

A: Yes, it wins the PassMark physics test with a score of 1727, which is 1.7% higher than the AMD's 1697.

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 7 155H has 16 cores and 22 threads, while the AMD Ryzen 7 7745HX has 8 cores and 16 threads.

Q: What is the difference in single-thread performance?

A: The AMD Ryzen 7 7745HX is faster. In PassMark single-thread, it scores 3947 versus 3468 for Intel, a 13.8% lead. In Cinebench R23 single-core, AMD scores 1850 versus 1743, a 6.1% lead.

Q: Which processor supports ECC memory?

A: The AMD Ryzen 7 7745HX supports ECC memory, while the Intel Core Ultra 7 155H does not.

Q: What are the power consumption ratings (TDP) for these two processors?

A: The AMD Ryzen 7 7745HX has a TDP of 55 watts, and the Intel Core Ultra 7 155H has a TDP of 28 watts.

Specification Differences

The two processors differ across nearly every major specification. The AMD Ryzen 7 7745HX has 8 cores and 16 threads, while the Intel Core Ultra 7 155H has 16 cores and 22 threads. Base clocks are 3.60 GHz for AMD and 3.80 GHz for Intel, but the AMD chip boosts higher at 5.10 GHz versus 4.80 GHz for Intel. The AMD part has a higher TDP at 55 watts, compared to 28 watts for Intel.

The AMD processor uses AMD Socket FL1, while Intel uses Intel BGA 2049. The process nodes differ: AMD is on 5 nm (TSMC), Intel is on 7 nm (Intel). Cache configurations are distinct, with AMD offering 64 KB L1, 1 MB L2 per core, and 32 MB shared L3, while Intel has 112 KB L1, 2 MB L2 per core, and 24 MB shared L3. Memory bandwidth favors Intel at 89.6 GB/s versus 83.2 GB/s, but only AMD supports ECC memory. PCIe lanes are heavily in AMD's favor at 28 lanes versus 8 lanes, both Gen 5. The AMD chip has an unlocked multiplier; the Intel chip does not. The integrated graphics are Radeon 610M for AMD and Arc Xe-LPG 128EU for Intel. The Intel part has a recorded launch MSRP of $503. The AMD part was released in January 2023, while Intel's release date is December 2023.

Head-to-Head Benchmarks

The data reveals a consistent pattern of AMD dominance. In Cinebench R15 multi-core, the AMD Ryzen 7 7745HX scores 2986, a 21.9% improvement over Intel's 2450. The R15 single-core test shows a 15.5% AMD lead, with scores of 294.5 versus 255. The newer Cinebench R23 tests continue this trend: multi-core yields a 22.8% advantage for AMD (18452.5 vs 15028), while single-core shows a smaller but still clear 6.1% lead (1850 vs 1743).

PassMark results amplify the AMD advantage in several specialized workloads. Data compression shows AMD at 383322 versus Intel's 277353, a 38.2% lead. Data encryption is even more lopsided, with AMD scoring 22967 against Intel's 16358, a 40.4% difference. The largest gap appears in extended instructions, where AMD's 28966 is a stunning 76% ahead of Intel's 16456. Integer math favors AMD by 21.8% (105773 vs 86870), and floating-point math is close, with AMD's 64297 edging Intel's 63703 by just 0.9%. Random string sorting shows a 39% AMD advantage (44474 vs 31990), and the multithread test has AMD ahead by 31% (32581 vs 24873). Prime number finding also favors AMD by 38.1% (156 vs 113).

The single-thread PassMark tests are consistent with the Cinebench results, showing AMD at 3947 versus Intel's 3468, a 13.8% lead. The only Intel victory is in PassMark physics, where Intel scores 1727 versus AMD's 1697, a marginal 1.7% edge. This single win does little to alter the overall picture of AMD superiority across the benchmark suite.

Where Each One Wins

The AMD Ryzen 7 7745HX wins in almost every measured category. It is the clear choice for multi-threaded productivity tasks, content creation, and any workload that leverages heavy compute. Its 22.8% lead in Cinebench R23 multi-core and 31% lead in PassMark multithread make it ideal for video editing, 3D rendering, and software compilation. The 38.2% advantage in data compression and 40.4% lead in encryption suggest strong performance in file archiving and security-focused tasks. The 76% gap in extended instructions points to a significant advantage in workloads using advanced CPU instruction sets, such as certain scientific or cryptographic applications. Its higher TDP and unlocked multiplier indicate it is designed for performance, not efficiency, and the data supports that positioning.

The Intel Core Ultra 7 155H wins only in the PassMark physics test, with a 1.7% margin. This is a narrow victory and does not suggest a broad strength. Its lower TDP of 28 watts, however, is a notable qualitative difference. The data does not include power efficiency benchmarks, but the specification difference implies that the Intel part could be more suitable for thin-and-light laptops where lower heat output and power draw are priorities. Its higher memory bandwidth and larger per-core L2 cache are also differentiators, though these do not translate into wins in the recorded tests. The Intel chip's integrated Arc Xe-LPG graphics may offer better iGPU performance, but no benchmark data in the database confirms this. For a user who values the lowest power consumption and is willing to accept a significant performance deficit in most CPU-bound tasks, the Intel part has a place. For anyone seeking the fastest processor in this comparison, the AMD Ryzen 7 7745HX is the definitive winner.