AMD Ryzen 7 8745HX vs Intel Core i9-14900 Comparison

Head-to-Head Benchmarks

The benchmark comparison between the AMD Ryzen 7 8745HX and Intel Core i9-14900 shows a decisive result: Intel wins all 11 recorded head-to-head tests. The most dramatic gap appears in floating-point math, where the i9-14900 scores 120262 against the AMD's 61972, a 48.5% advantage. Integer math tells a similar story: the Intel part posts 175010 versus 100328, a 42.7% lead. These are not marginal differences; they represent substantial performance deltas in raw computational throughput.

The gap narrows considerably in other workloads. In extended instructions, the i9-14900 leads by only 9.8%, scoring 30624 against 27638. Single-thread performance shows a 10.3% delta, with Intel at 4323 and AMD at 3879. Data compression results give Intel a 33.9% edge (550271 vs. 363759), while data encryption shows a 34.9% difference (33540 vs. 21840). The multithread score favors Intel by 29.3% (44578 vs. 31517), and physics tests show a 32.4% gap (2486 vs. 1681).

Random string sorting results in a 27.1% Intel advantage (61060 vs. 44494), and prime number finding shows a 15.4% lead (188 vs. 159). Every recorded metric favors the Intel processor, with deltas ranging from under 10% to nearly half the performance in some cases. The database records zero wins for the AMD chip in these head-to-head comparisons.

Context matters here. The i9-14900 belongs to the desktop segment with 24 cores and 32 threads, while the 8745HX is a mobile part with 8 cores and 16 threads. That core count difference explains much of the margin in heavily threaded workloads, but the single-thread and extended-instruction gaps show that Intel also holds a lead in efficiency per thread in these tests.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Ryzen 7 8745HX uses Zen 4 architecture on a 5 nm TSMC process, with a die size of 71 mm² and 6,570 million transistors. It is built on the Dragon Range codename, part of the 8000 series, and targets the mobile market segment. The Intel Core i9-14900 uses Raptor Lake architecture on Intel's 10 nm process, with a 257 mm² die and no transistor count recorded in the database. It belongs to the Core 14th Gen series and targets desktop systems.

Core configuration differs sharply. The AMD chip has 8 cores and 16 threads, while the Intel part has 24 cores and 32 threads. Cache hierarchies also diverge: AMD provides 64 KB L1 per core, 1 MB L2 per core, and 32 MB shared L3. Intel provides 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3. The Intel chip's larger cache allocation per core and bigger L3 pool align with its higher core count.

Clock speeds favor Intel in boost frequency. The i9-14900 boosts to 5.80 GHz from a 2.00 GHz base, while the 8745HX boosts to 5.10 GHz from a 3.60 GHz base. The AMD part's higher base clock suggests better sustained performance at lower power envelopes, though the database records TDP as 55 W for AMD and 65 W for Intel. Memory support differs as well: AMD supports only DDR5 with dual-channel, while Intel supports both DDR4 and DDR5, also dual-channel. The AMD chip records 83.2 GB/s memory bandwidth; no bandwidth figure exists for the Intel part.

PCIe lanes differ significantly. AMD provides Gen 5 with 28 lanes (CPU only), while Intel provides Gen 5 with 16 lanes (CPU only). Integrated graphics also differ: AMD includes Radeon 610M, Intel includes UHD Graphics 770. ECC memory support is absent on AMD but present on Intel. The AMD multiplier is unlocked, while Intel's is not. Sockets are incompatible: AMD Socket FL1 versus Intel Socket 1700.

Process node and foundry differences are notable. AMD uses TSMC's 5 nm process, which typically allows higher transistor density in a smaller die. Intel uses its own 10 nm process with a much larger die. The 71 mm² AMD die versus 257 mm² Intel die reflects both the process difference and the core count gap. The AMD part's production status is active, as is Intel's, with release dates of 2025-04-22 for AMD and 2024-01-07 for Intel.

Where Each One Wins

The Intel Core i9-14900 wins every recorded benchmark, so the use-case split is straightforward. In workloads that stress floating-point math, integer math, or data compression, the i9-14900's 24-core, 32-thread configuration provides a massive advantage. The 48.5% lead in floating-point math and 42.7% lead in integer math suggest that scientific computing, financial modeling, and video encoding would favor Intel heavily.

Data encryption and compression workloads similarly benefit from the higher core count. Intel leads by 34.9% in encryption and 33.9% in compression. These tasks scale well with thread count, and the i9-14900 has twice the cores and threads of the AMD part. Multithread performance shows a 29.3% Intel advantage, which would translate to faster rendering, compilation, and batch processing.

The AMD Ryzen 7 8745HX shows its best relative results in extended instructions (9.8% deficit) and single-thread performance (10.3% deficit). These are the closest margins in the entire comparison. For an 8-core mobile processor, the 8745HX remains competitive in lightly threaded tasks, where the difference is within a tenth of the Intel part's performance. The higher base clock of 3.60 GHz likely helps maintain responsiveness in short bursts.

Physics and random string sorting favor Intel by 32.4% and 27.1%, respectively. These tests involve a mix of memory access and compute, and the Intel chip's larger L3 cache (36 MB vs. 32 MB) plus higher thread count contribute to the margin. Prime number finding shows a 15.4% Intel lead, which is a moderate gap.

For mobile workloads, the AMD part's 55 W TDP versus Intel's 65 W TDP suggests better power efficiency, though the database does not record battery life or sustained performance figures. The AMD chip's 5 nm process and smaller die (71 mm² vs. 257 mm²) indicate lower power density, which matters for laptops. The Intel chip, being a desktop part, is not designed for battery operation.

FAQ

Q: Which processor has more cores?

A: The Intel Core i9-14900 has 24 cores and 32 threads, while the AMD Ryzen 7 8745HX has 8 cores and 16 threads.

Q: What is the single-thread performance difference?

A: The Intel part scores 4323 in PassMark single-thread tests, while the AMD part scores 3879. Intel leads by 10.3%.

Q: Does the AMD chip support ECC memory?

A: No, the AMD Ryzen 7 8745HX does not support ECC memory. The Intel Core i9-14900 does support ECC memory.

Q: What is the largest benchmark gap between the two?

A: The largest gap is in floating-point math, where the Intel part scores 120262 versus the AMD's 61972, a 48.5% difference.

Q: Which processor has a higher boost clock?

A: The Intel Core i9-14900 has a boost clock of 5.80 GHz, while the AMD Ryzen 7 8745HX has a boost clock of 5.10 GHz.

Q: Are the sockets interchangeable?

A: No, the AMD chip uses AMD Socket FL1, while the Intel chip uses Intel Socket 1700.

The Verdict

The data is unambiguous: the Intel Core i9-14900 outperforms the AMD Ryzen 7 8745HX in every recorded benchmark. The Intel part wins all 11 head-to-head tests, with advantages ranging from 9.8% in extended instructions to 48.5% in floating-point math. The core count disparity, 24 versus 8, is the primary driver of these results, but the Intel part also leads in single-thread performance by 10.3%.

Users who need maximum multi-threaded throughput should choose the Intel Core i9-14900. Rendering, scientific computation, data compression, and encryption all favor the Intel part by margins of 27% or more. The 32-thread configuration provides raw compute that the 8-core AMD chip cannot match. The Intel part also offers ECC memory support and support for both DDR4 and DDR5, which may matter in workstation environments.

The AMD Ryzen 7 8745HX remains a viable option for mobile systems where power efficiency and size matter. Its 55 W TDP is lower than Intel's 65 W, and its 5 nm process allows a 71 mm² die versus Intel's 257 mm². The closest margins are in single-thread and extended-instruction workloads, where the AMD chip trails by roughly 10%. For laptop users who need occasional bursts of performance without the desktop power draw, the 8745HX offers a reasonable balance.

However, the database provides no benchmark category where the AMD chip wins. Every test, from prime numbers to physics to random string sorting, shows Intel ahead. The AMD part's higher base clock (3.60 GHz vs. 2.00 GHz) does not translate into benchmark wins. The Intel Core i9-14900 is the clear performance leader across all measured workloads, and the data supports its selection for any compute-intensive application.