AMD Ryzen 7 5700X vs Intel Core i9-12900H Comparison

Head-to-Head Benchmarks

The head-to-head data shows a clear overall victory for the Intel Core i9-12900H, which wins 14 of the 21 recorded benchmark comparisons. The AMD Ryzen 7 5700X takes the remaining 7. However, the distribution of wins is not uniform, and the magnitudes of the deltas tell a more nuanced story than the raw win count.

The Intel part's largest advantage appears in floating-point and physics workloads. In passmark_floating_point_math, the i9-12900H scores 67940 against the Ryzen 7 5700X's 51842, a 31.1% lead. The same 31.1% delta appears in passmark_physics, where Intel scores 1753 and AMD scores 1337. These are the two biggest wins in the entire comparison, and they indicate a substantial architectural efficiency in compute-heavy floating-point tasks.

Cinebench results also favor Intel decisively. In cinebench_r23_multicore, the i9-12900H posts 15946.5 against 13184 for the Ryzen 7 5700X, a 21% advantage. The single-core gap is even larger in percentage terms: cinebench_r23_singlecore shows Intel at 1863.5 and AMD at 1499, a 24.3% lead. The older cinebench_r15 tests follow the same pattern, with Intel ahead by 10.6% in multicore (2576.5 vs 2329) and 5.1% in single-core (266 vs 253).

In 3DMark threaded tests, the results split by thread count. The Ryzen 7 5700X wins the 16-thread test with 6858 versus 6457, a 5.8% margin for AMD. It also wins at 4 threads (3512 vs 3398, a 3.2% delta) and at 8 threads (5768 vs 5074, a 12% delta). But Intel wins the max-threads test narrowly, 6927 vs 6850, a 1.1% delta, and the 2-thread test, 1891 vs 1821, a 3.8% delta. The single-thread 3DMark test goes to Intel by 8.5%, with scores of 999 and 921.

PassMark results are split. Intel wins passmark_single_thread (3717 vs 3385, a 9.8% delta), passmark_integer_math (93828 vs 92749, a 1.2% delta), passmark_multithread (27340 vs 26612, a 2.7% delta), passmark_random_string_sorting (35296 vs 33512, a 5.3% delta), and the two floating-point and physics tests already noted. AMD takes passmark_data_compression (323610 vs 316714, a 2.1% delta), passmark_data_encryption (20198 vs 18548, an 8.2% delta), passmark_extended_instructions (21755 vs 18875, a 13.2% delta), and passmark_find_prime_numbers (119 vs 107, a 10.1% delta).

The average benchmark scores reflect the overall balance. The Intel Core i9-12900H has an average benchmark score of 28003, ranking in the 80th percentile of all CPUs. The AMD Ryzen 7 5700X averages 27578, sitting in the 79th percentile. That is a difference of only 425 points, or roughly 1.5%, despite the larger swings in individual tests.

Architecture Differences

The two processors come from fundamentally different design philosophies and market segments. The Intel Core i9-12900H is a mobile part built on Alder Lake architecture, specifically the Alder Lake-H codename, using Intel's 10 nm process node. It has 14 cores and 20 threads, with a base clock of 2.50 GHz and a boost clock of 5.00 GHz. Its TDP is rated at 45 watts. The die size is 217 mm², and it uses the Intel BGA 1744 socket. It is not multiplier unlocked.

The AMD Ryzen 7 5700X is a desktop processor based on Zen 3, codename Vermeer, fabricated on TSMC's 7 nm node. It has 8 cores and 16 threads, with a base clock of 3.40 GHz and a boost clock of 4.60 GHz. Its TDP is 65 watts. The die is much smaller at 74 mm², and it uses the AMD Socket AM4. The transistor count is listed at 4,150 million. Unlike the Intel part, the Ryzen 7 5700X has an unlocked multiplier.

Cache layouts differ substantially. The Intel part has 80 KB of L1 cache per core, 1.25 MB of L2 per core, and 24 MB of shared L3 cache. The AMD part has 64 KB of L1 per core, 512 KB of L2 per core, and a larger 32 MB of shared L3 cache. The larger L3 on the AMD side likely contributes to its wins in data compression and encryption workloads.

Memory support is another differentiator. The Intel Core i9-12900H supports both DDR4 and DDR5 memory over a dual-channel bus. The AMD Ryzen 7 5700X supports only DDR4 memory, also dual-channel, with a listed memory bandwidth of 51.2 GB/s. The Intel part includes integrated graphics in the form of Iris Xe with 96 execution units, while the AMD part has no integrated graphics at all. The Intel part does not support ECC memory, while the AMD part does. Both use PCIe Gen 4 with 20 lanes from the CPU.

The Intel part was released on 2022-01-03, and the AMD part was released on 2022-04-03. Both are listed as active in production. The AMD Ryzen 7 5700X has a launch MSRP of $299. The Intel part's launch MSRP is not recorded in the database.

The Verdict

The recorded data indicates that the Intel Core i9-12900H is the stronger overall performer in this comparison. It leads in 14 of 21 benchmarks and holds a higher average benchmark score (28003 vs 27578) and a higher percentile ranking (80th vs 79th). The Intel part's wins are often large, particularly in floating-point math, physics, and Cinebench workloads, where it leads by double-digit percentages.

The AMD Ryzen 7 5700X, however, should not be dismissed. Its wins are concentrated in specific areas: data compression, data encryption, extended instructions, prime number finding, and mid-thread-count 3DMark tests. In passmark_extended_instructions, it leads by 13.2%, and in passmark_data_encryption, it leads by 8.2%. These are meaningful advantages for workloads that rely on those instruction paths.

From a pure benchmark perspective, the Intel part is the better choice for users whose workloads resemble Cinebench rendering, floating-point mathematics, or physics simulation. The AMD part is the better choice for encryption, compression, and certain instruction-heavy tasks. The overall average scores are close enough that real-world application choice matters more than the headline number.

The mobile versus desktop distinction is also relevant. The Intel part is a mobile processor on a BGA socket, while the AMD part is a desktop processor on AM4. The Intel part includes integrated graphics, which the AMD part lacks entirely. The AMD part supports ECC memory, which the Intel part does not. These factors may matter independently of raw performance.

FAQ

Q: Which processor has the higher single-thread performance?

A: The Intel Core i9-12900H wins all single-thread comparisons. It leads by 8.5% in 3dmark_single_thread (999 vs 921), by 5.1% in cinebench_r15_singlecore (266 vs 253), by 24.3% in cinebench_r23_singlecore (1863.5 vs 1499), and by 9.8% in passmark_single_thread (3717 vs 3385).

Q: Which processor is better for multi-threaded rendering workloads?

A: The Intel Core i9-12900H leads in Cinebench R23 multicore by 21% (15946.5 vs 13184) and in Cinebench R15 multicore by 10.6% (2576.5 vs 2329). It also leads in passmark_multithread by 2.7% (27340 vs 26612).

Q: Where does the AMD Ryzen 7 5700X beat the Intel part?

A: The AMD part wins 7 of 21 benchmarks: 3dmark_16_threads (6858 vs 6457), 3dmark_4_threads (3512 vs 3398), 3dmark_8_threads (5768 vs 5074), passmark_data_compression (323610 vs 316714), passmark_data_encryption (20198 vs 18548), passmark_extended_instructions (21755 vs 18875), and passmark_find_prime_numbers (119 vs 107).

Q: What is the biggest single benchmark gap between the two?

A: The largest deltas are tied at 31.1%. The Intel part leads by that margin in both passmark_floating_point_math (67940 vs 51842) and passmark_physics (1753 vs 1337).

Q: Do the processors support the same memory types?

A: No. The Intel Core i9-12900H supports both DDR4 and DDR5 memory on a dual-channel bus. The AMD Ryzen 7 5700X supports only DDR4 memory on a dual-channel bus, with a recorded memory bandwidth of 51.2 GB/s.

Q: Do these processors have integrated graphics?

A: The Intel Core i9-12900H includes Iris Xe graphics with 96 execution units. The AMD Ryzen 7 5700X has no integrated graphics.

Where Each One Wins

For floating-point intensive work, the Intel Core i9-12900H is the clear pick. Its 31.1% lead in passmark_floating_point_math and matching 31.1% lead in passmark_physics make it the stronger choice for simulation, scientific computing, and physics engines. The same applies to rendering workloads: the 21% lead in Cinebench R23 multicore and 10.6% lead in Cinebench R15 multicore point to a decisive advantage in CPU-based rendering.

For single-threaded responsiveness, Intel again takes the win. The 24.3% lead in Cinebench R23 single-core, 8.5% lead in 3DMark single-thread, and 9.8% lead in PassMark single-thread all indicate faster per-thread execution. Users running lightly threaded applications should prefer the Intel part.

For encryption and compression, the AMD Ryzen 7 5700X is the better choice. It leads by 8.2% in passmark_data_encryption and by 2.1% in passmark_data_compression. Its 13.2% lead in passmark_extended_instructions suggests an advantage in workloads that use advanced instruction sets, and its 10.1% lead in passmark_find_prime_numbers indicates strength in integer-heavy algorithmic tasks.

For mid-thread-count parallel workloads, the AMD part also has a case. It wins the 3DMark 16-thread test by 5.8%, the 8-thread test by 12%, and the 4-thread test by 3.2%. The Intel part only wins the max-threads test by 1.1%, suggesting that the AMD part scales better in the 4 to 16 thread range, while the Intel part's advantage emerges at higher thread counts and in specific math workloads.

For systems requiring ECC memory, the AMD Ryzen 7 5700X is the only option between the two, as it supports ECC while the Intel part does not. For systems requiring integrated graphics, the Intel part is the only option, since the AMD part has none. Both support PCIe Gen 4 with 20 CPU lanes, so platform expansion capability is equal on that front.

The overall average scores are close: 28003 for Intel versus 27578 for AMD. The percentile rankings are similarly close, at 80 versus 79. Neither part dominates the other completely. The Intel Core i9-12900H is the stronger all-around performer with more wins and larger margins in its strongest areas, while the AMD Ryzen 7 5700X offers targeted advantages in encryption, compression, extended instructions, and mid-thread-count workloads.