AMD Ryzen 7 5800X vs Intel Core i9-13900H Comparison

The AMD Ryzen 7 5800X and Intel Core i9-13900H represent two fundamentally different approaches to high-end computing: a desktop processor built for sustained multi-threaded throughput versus a mobile chip designed to balance core count with power efficiency. Benchmark data reveals a fascinating split, with the Intel part winning 14 of 21 head-to-head tests, yet the AMD processor claiming decisive victories in specific workloads that hint at architectural strengths beyond raw core count. Both CPUs land at the 81st percentile among all tested processors, and their average benchmark scores are remarkably close — 29123 for the AMD versus 28886 for the Intel — which sets the stage for a nuanced comparison.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i9-13900H has 14 cores and 20 threads, while the AMD Ryzen 7 5800X has 8 cores and 16 threads. Despite the core deficit, the AMD chip wins the passmark_multithread test by a razor-thin 0.2% margin (27732 vs 27673).

Q: How do their single-threaded performances compare?

A: The Intel Core i9-13900H is consistently faster in single-threaded workloads. It leads by 12.5% in 3dmark_single_thread (1078 vs 943), by 19.9% in cinebench_r23_singlecore (1964.5 vs 1574.5), and by 8.2% in passmark_single_thread (3754 vs 3445).

Q: What is the biggest performance gap in either direction?

A: The largest margin belongs to the Intel Core i9-13900H in passmark_floating_point_math, where it scores 69611 versus the AMD's 52639, a 24.4% advantage. The AMD's biggest win is 22% in passmark_extended_instructions (23573 vs 19330).

Q: Which processor has a higher base clock speed?

A: The AMD Ryzen 7 5800X has a base clock of 3.80 GHz, significantly higher than the Intel Core i9-13900H's 2.60 GHz. However, the Intel chip has a higher boost clock at 5.40 GHz versus the AMD's 4.70 GHz.

Q: Do both processors support ECC memory?

A: No. The AMD Ryzen 7 5800X supports ECC memory, while the Intel Core i9-13900H does not. This could be a deciding factor for users running error-sensitive workloads.

Q: What are the launch MSRPs of these two processors?

A: The AMD Ryzen 7 5800X had a launch MSRP of $449, while the Intel Core i9-13900H had a launch MSRP of $617.

Where Each One Wins

The data paints a clear picture of workload specialization. The AMD Ryzen 7 5800X dominates in security and cryptography workloads, winning passmark_data_encryption by 11.7% (21191 vs 18974) and passmark_find_prime_numbers by 19.2% (124 vs 104). It also excels in passmark_extended_instructions, where its 22% lead (23573 vs 19330) suggests a strong advantage in SIMD-heavy and specialized instruction workloads. Data compression is another AMD win, with a 5.8% edge in passmark_data_compression (345414 vs 326425).

The Intel Core i9-13900H, by contrast, is the clear winner in floating-point math, scoring 69611 in passmark_floating_point_math versus the AMD's 52639 — a 24.4% gap that is the largest of any test. The Intel chip also takes physics simulations, leading passmark_physics by 21.8% (1745 vs 1364). Single-threaded performance is firmly in Intel's court across all three benchmark suites, with margins ranging from 4.8% in cinebench_r15_singlecore to 19.9% in cinebench_r23_singlecore.

In multi-core rendering, the Intel part wins cinebench_r23_multicore by 11.4% (17471 vs 15476), but the AMD fights back in 3dmark_8_threads with an 11.9% win (6035 vs 5395). The AMD also edges out the Intel in passmark_multithread by 0.2% (27732 vs 27673), despite having 6 fewer cores and 4 fewer threads.

Architecture Differences

The architectural gulf between these two processors is substantial. The AMD Ryzen 7 5800X is built on TSMC's 7 nm process node with a die size of 74 mm², housing 4,150 million transistors. It uses the Zen 3 architecture under the Vermeer codename and fits into the AMD Socket AM4. The Intel Core i9-13900H, meanwhile, uses Intel's 10 nm process node with a much larger 257 mm² die, based on the Raptor Lake architecture with the Raptor Lake-H codename, and is soldered to the Intel BGA 1744 socket.

Cache hierarchies differ notably. The AMD has 64 KB of L1 cache per core, 512 KB of L2 per core, and a 32 MB shared L3 cache. The Intel has 80 KB of L1 per core, a substantially larger 2 MB of L2 per core, but a smaller 24 MB of shared L3 cache. This suggests the Intel design relies more heavily on per-core cache resources, while the AMD leverages a larger pool of shared L3 for cross-core data sharing.

The AMD integrates no graphics, while the Intel includes Iris Xe Graphics with 96 execution units. The AMD's TDP is 105 watts, more than double the Intel's 45 watts, reflecting its desktop orientation. The AMD supports only DDR4 memory with a dual-channel bus and 51.2 GB/s bandwidth, while the Intel supports both DDR4 and DDR5, also with a dual-channel bus. PCIe capabilities also diverge: the AMD offers Gen 4 with 20 CPU lanes, while the Intel provides Gen 5 with 8 CPU lanes. The AMD's multiplier is unlocked, enabling overclocking, whereas the Intel's is locked.

Specification Differences

The core and thread counts are the most obvious differentiators: 8 cores and 16 threads for the AMD versus 14 cores and 20 threads for the Intel. Clock speeds tell a story of design philosophy — the AMD starts at 3.80 GHz base and boosts to 4.70 GHz, while the Intel starts at 2.60 GHz but boosts to 5.40 GHz. The TDP gap is stark: 105 watts for the AMD versus 45 watts for the Intel, reflecting the desktop versus mobile market segment split.

Memory support differs, with the AMD limited to DDR4 while the Intel supports both DDR4 and DDR5. The AMD has a specified memory bandwidth of 51.2 GB/s, while the Intel's is not listed. ECC memory is supported by the AMD but not the Intel. The integrated graphics situation is binary: the AMD has none, the Intel has Iris Xe Graphics 96EU. Process nodes differ, with the AMD on 7 nm (TSMC) and the Intel on 10 nm (Intel foundry). The AMD die measures 74 mm² versus the Intel's 257 mm². Release dates are over two years apart, with the AMD launching on 2020-11-04 and the Intel on 2023-01-03.

Head-to-Head Benchmarks

The benchmark suite reveals a clear pattern: the Intel Core i9-13900H wins on raw speed and floating-point muscle, while the AMD Ryzen 7 5800X counters with specialized workload advantages. The Intel's most dominant performance comes in passmark_floating_point_math, where it beats the AMD by 24.4% (69611 vs 52639). This is complemented by a 21.8% lead in passmark_physics (1745 vs 1364) and a 19.9% margin in cinebench_r23_singlecore (1964.5 vs 1574.5).

Single-threaded performance follows the same trend. The Intel leads 3dmark_single_thread by 12.5% (1078 vs 943), passmark_single_thread by 8.2% (3754 vs 3445), and cinebench_r15_singlecore by 4.8% (279 vs 265.5). In multi-core rendering, the Intel wins cinebench_r23_multicore by 11.4% (17471 vs 15476) and cinebench_r15_multicore by 2.2% (2666.5 vs 2608.5). The Intel also takes 3dmark_2_threads by 7.8% (2002 vs 1846) and 3dmark_max_threads by 1.2% (7670 vs 7578).

The AMD's victories are concentrated in specific domains. Its 22% win in passmark_extended_instructions (23573 vs 19330) is the largest AMD margin, followed by a 19.2% lead in passmark_find_prime_numbers (124 vs 104). Data encryption sees an 11.7% AMD advantage (21191 vs 18974), and 3dmark_8_threads shows an 11.9% AMD win (6035 vs 5395). The AMD also edges out the Intel in passmark_data_compression by 5.8% (345414 vs 326425) and in passmark_multithread by a hair's breadth at 0.2% (27732 vs 27673). The remaining tests — 3dmark_16_threads (7.4% AMD), 3dmark_4_threads (1.3% Intel), passmark_integer_math (2.3% Intel), and passmark_random_string_sorting (0.7% Intel) — are closer affairs.

The Verdict

The benchmark data suggests two distinct buyer profiles. The AMD Ryzen 7 5800X is the choice for workloads that stress encryption, prime number calculations, extended instruction sets, and data compression. Its wins in passmark_data_encryption, passmark_find_prime_numbers, and passmark_extended_instructions indicate strong cryptographic and specialized compute capabilities, likely benefiting from its larger 32 MB L3 cache and 7 nm process efficiency. The AMD also holds its own in multithreaded performance despite fewer cores, winning passmark_multithread and 3dmark_8_threads, which suggests excellent thread scaling efficiency.

The Intel Core i9-13900H is the pick for users prioritizing raw speed, particularly in single-threaded tasks and floating-point math. Its 24.4% lead in passmark_floating_point_math and 21.8% advantage in passmark_physics make it the superior choice for physics simulations and numerically intensive applications. The Intel's 19.9% single-core lead in cinebench_r23 and 12.5% in 3dmark_single_thread also position it well for lightly-threaded applications where clock speed — up to 5.40 GHz — is paramount. Its 11.4% win in cinebench_r23_multicore further shows that its hybrid core arrangement can out-muscle the AMD in sustained rendering workloads.

The decision ultimately hinges on whether the user's applications favor the AMD's specialized instruction handling and encryption throughput or the Intel's brute-force speed in floating-point and single-threaded scenarios. The AMD is a desktop processor with an unlocked multiplier and ECC support, suited for systems where those features matter. The Intel is a mobile processor with integrated graphics and a lower TDP, suitable for laptops where power efficiency is crucial. With the Intel winning 14 of 21 tests and the AMD taking 7, the data slightly favors the Intel in overall breadth, but the AMD's wins are often in categories where specialized performance is non-negotiable.