AMD Ryzen 9 7900X vs Intel Core i9-14900HX Comparison

The Verdict

The benchmark database presents a clear statistical split between these two processors, despite both sitting at the 91st percentile among all CPUs. The AMD Ryzen 9 7900X wins 14 of the 17 recorded head-to-head comparisons, while the Intel Core i9-14900HX takes only 3. The average benchmark score for the Intel part is 56004, which is 5.1% higher than the AMD part's 53288 average, but this aggregate hides the lopsided nature of individual tests.

The data suggests the AMD Ryzen 9 7900X is the broader performer for most workloads, particularly those involving encryption, compression, sorting, and integer math. The Intel Core i9-14900HX, however, shows specific strengths in floating point math and in newer Cinebench versions. Users who prioritize single-core performance in the latest rendering tests should look at the Intel chip, while those who need consistent multi-threaded throughput across a wider range of applications should favor the AMD chip.

The Ryzen 9 7900X's wins are decisive in several cases. It leads by 50.3% in find prime numbers, by 34.4% in extended instructions, and by 18.5% in random string sorting. The Intel chip's victories are narrower but meaningful: 8.2% in Cinebench R23 single-core, 8% in floating point math, and 2.6% in Cinebench R23 multi-core. The conclusion from the data: the AMD desktop processor is the more versatile choice for mixed workloads, while the Intel mobile processor has specialized advantages that matter in specific rendering and floating-point scenarios.

Where Each One Wins

The AMD Ryzen 9 7900X dominates in security-related tasks. Data encryption shows a 12.5% lead (37263 vs 32619), and extended instructions show a massive 34.4% advantage (47619 vs 31247). These results indicate the Zen 4 architecture handles cryptographic and SIMD workloads with considerably more efficiency than the Raptor Lake mobile chip.

The Intel Core i9-14900HX wins in floating point math (112273 vs 103952, an 8% edge) and in Cinebench R23 tests. The single-core R23 result is particularly notable: 2181.5 vs 2016.5, an 8.2% advantage. This suggests the Intel chip's higher boost clock of 5.80 GHz, compared to the AMD's 5.60 GHz, translates into real performance in lightly threaded rendering tasks.

For multi-threaded workloads, the picture is mixed. The AMD chip wins Geekbench multi-core by 9.1% (19267 vs 17511) and PassMark multi-thread by 14.8% (51406 vs 43778), but the Intel chip wins Cinebench R23 multi-core by 2.6% (30055 vs 29300). The older Cinebench R15 multi-core test favors AMD by 5.1% (4820.5 vs 4574). Users should note that the AMD processor has 12 cores and 24 threads, while the Intel has 24 cores and 32 threads, yet the AMD still wins most multi-threaded tests, indicating higher per-core efficiency.

Architecture Differences

The Intel Core i9-14900HX uses Raptor Lake architecture on a 10 nm process from Intel's own foundry, with a die size of 257 mm². The AMD Ryzen 9 7900X uses Zen 4 architecture on a 5 nm process from TSMC, with a die size of 2x 71 mm². AMD's transistor count is listed at 13,140 million, while Intel's is not recorded.

Cache configurations differ substantially. The Intel chip has 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3. The AMD chip has 64 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3. The larger L3 cache on AMD likely contributes to its wins in data compression and sorting tasks, where larger working sets benefit from more cache.

The Intel chip supports both DDR4 and DDR5 memory, while the AMD chip supports only DDR5. The AMD chip has a recorded memory bandwidth of 83.2 GB/s, while Intel's bandwidth is not listed. Both use dual-channel memory buses and support ECC memory. The AMD chip has 24 PCIe Gen 5 lanes (CPU only), while the Intel has 16 lanes. Both have integrated graphics: Intel's UHD Graphics 770 and AMD's Radeon Graphics.

The market segments differ fundamentally: the Intel chip is mobile (Intel BGA 1964 socket) with a TDP of 55 watts, while the AMD chip is desktop (AMD Socket AM5) with a TDP of 170 watts. The release dates also differ: the Intel part was released on 2024-01-07, while the AMD part came out on 2022-09-26.

FAQ

Q: Which processor has a higher boost clock?

A: The Intel Core i9-14900HX boosts to 5.80 GHz, while the AMD Ryzen 9 7900X boosts to 5.60 GHz. The Intel chip also has a lower base clock at 2.20 GHz compared to AMD's 4.70 GHz.

Q: How do the core counts compare?

A: The Intel chip has 24 cores and 32 threads, while the AMD chip has 12 cores and 24 threads. Despite fewer cores, the AMD chip wins most multi-threaded benchmarks.

Q: What is the largest single benchmark margin between these two?

A: The AMD Ryzen 9 7900X leads by 50.3% in PassMark find prime numbers (388 vs 193). This is the largest delta in the head-to-head results.

Q: Is there any benchmark where the Intel chip wins by more than 5%?

A: Yes, the Intel Core i9-14900HX wins Cinebench R23 single-core by 8.2% (2181.5 vs 2016.5) and floating point math by 8% (112273 vs 103952).

Q: Which processor has more L3 cache?

A: The AMD Ryzen 9 7900X has 64 MB shared L3 cache, while the Intel Core i9-14900HX has 36 MB shared L3 cache.

Q: When was each processor released?

A: The Intel Core i9-14900HX was released on 2024-01-07, and the AMD Ryzen 9 7900X was released on 2022-09-26.

Head-to-Head Benchmarks

The most striking result in the database is the PassMark find prime numbers test. The AMD Ryzen 9 7900X scores 388 versus the Intel's 193, a 50.3% advantage. This test measures integer-heavy mathematical operations, and the gap suggests fundamental architectural efficiency differences in this workload.

PassMark extended instructions shows another large gap: AMD leads 47619 to 31247, a 34.4% margin. This test exercises SIMD and specialized instruction sets, where Zen 4's design appears significantly stronger. Data compression follows a similar pattern, with AMD leading 632505 to 539965, a 14.6% difference. Random string sorting shows AMD ahead by 18.5% (74658 vs 60861).

The AMD chip also wins PassMark multi-thread by 14.8% (51406 vs 43778) and physics by 13.8% (3060 vs 2638). Integer math favors AMD by 7% (169273 vs 157375), and data encryption by 12.5% (37263 vs 32619). Geekbench tests show AMD leading multi-core by 9.1% (19267 vs 17511) and single-core by 11% (2617 vs 2330).

The Intel chip's wins are concentrated in specific areas. Cinebench R23 single-core shows Intel ahead by 8.2% (2181.5 vs 2016.5), which is notable given the AMD chip's higher base clock. Floating point math favors Intel by 8% (112273 vs 103952). Cinebench R23 multi-core is close, with Intel winning by 2.6% (30055 vs 29300).

The older Cinebench R15 tests favor AMD: multi-core by 5.1% (4820.5 vs 4574) and single-core by 3.9% (323 vs 310.5). PassMark single-thread tests are nearly tied, with AMD leading by only 1.5% (4238 vs 4175). The overall pattern shows AMD winning the majority of tests, often by double-digit margins, while Intel wins a few tests by moderate margins.

Specification Differences

The two processors differ in nearly every physical specification. The Intel Core i9-14900HX has 24 cores and 32 threads, while the AMD Ryzen 9 7900X has 12 cores and 24 threads. Base clocks differ substantially: 2.20 GHz for Intel versus 4.70 GHz for AMD. Boost clocks are closer: 5.80 GHz versus 5.60 GHz.

TDP is a major differentiator: the Intel chip is rated at 55 watts, while the AMD chip is rated at 170 watts. This aligns with their market segments: mobile versus desktop. The sockets reflect this: Intel BGA 1964 versus AMD Socket AM5.

Process technology differs: Intel uses 10 nm from its own foundry, while AMD uses 5 nm from TSMC. Die sizes are 257 mm² for Intel versus 2x 71 mm² for AMD. AMD's transistor count is 13,140 million; Intel's is not recorded.

Cache hierarchies differ: Intel has 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3. AMD has 64 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3. Memory support: Intel accepts DDR4 and DDR5, while AMD accepts only DDR5. Both use dual-channel buses, but only AMD has a recorded bandwidth figure of 83.2 GB/s.

PCIe lanes differ: AMD provides 24 Gen 5 lanes (CPU only), while Intel provides 16. Both have integrated graphics, but with different implementations: UHD Graphics 770 versus Radeon Graphics. Both support ECC memory, and both have unlocked multipliers. The AMD chip has a launch MSRP of $549, while the Intel chip has no recorded MSRP. Release dates differ by over a year: 2024-01-07 for Intel versus 2022-09-26 for AMD.