AMD Ryzen 9 5900XT vs AMD Ryzen AI 9 HX PRO 370 Comparison

The AMD Ryzen 9 5900XT and AMD Ryzen AI 9 HX PRO 370 represent two very different philosophies in processor design: a high-core-count desktop part versus a power-efficient mobile chip. Despite this, their average benchmark scores are remarkably close, with the 5900XT scoring 50,718 and the HX PRO 370 scoring 50,448. The head-to-head data reveals a dominant performance profile for the desktop processor, winning 12 of the 15 benchmark comparisons, yet the mobile chip claims victory in specific workloads that highlight its architectural advantages.

Head-to-Head Benchmarks

The most striking result is in Cinebench R23 multicore, where the Ryzen 9 5900XT scores 37,373 against the HX PRO 370’s 18,520, a massive 101.8% advantage. This is the single largest delta in the entire comparison and underscores the 5900XT’s 16-core, 32-thread configuration versus the 12-core, 24-thread mobile part. The gap persists in Cinebench R15 multicore, with the 5900XT leading 3,767 to 3,178, an 18.5% margin.

Single-core results are similarly lopsided, but with a surprising twist. In Cinebench R15 single-core, the 5900XT scores 531 versus 309, a 71.8% lead. However, in Cinebench R23 single-core, the margin expands to 164.9%, with scores of 5,276 and 1,992 respectively. These numbers suggest the desktop chip’s higher base clock of 3.30 GHz and boost clock of 4.80 GHz, combined with its Zen 3 architecture, deliver substantially stronger per-thread performance in these specific rendering workloads.

PassMark results paint a more nuanced picture. The 5900XT dominates in data compression (597,862 vs 403,113, +48.3%), data encryption (37,814 vs 20,788, +81.9%), extended instructions (39,141 vs 28,165, +39%), integer math (177,566 vs 120,016, +48%), and floating-point math (99,398 vs 73,493, +35.2%). The multithread score shows a 31.4% lead (43,810 vs 33,349), while random string sorting favors the 5900XT by 42.9% (62,537 vs 43,767).

The HX PRO 370 wins only three comparisons, but they are telling. In PassMark single-thread, it scores 4,003 versus 3,474, a 13.2% advantage that reflects its higher 5.10 GHz boost clock and newer Zen 5 architecture. It also wins in PassMark physics (1,892 vs 1,715, +9.4%), a result that appears counterintuitive given the 5900XT’s overall multicore strength but may reflect the mobile chip’s more efficient instruction scheduling in that specific test. The data shows the HX PRO 370 cannot match the 5900XT in raw throughput, yet its single-thread capability is genuinely superior.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Ryzen 9 5900XT scores 50,718 on average, while the Ryzen AI 9 HX PRO 370 scores 50,448. The difference is 270 points, or approximately 0.5%. Both rank in the 90th percentile of all CPUs.

Q: How large is the multicore performance gap in Cinebench R23?

A: The 5900XT scores 37,373 versus 18,520 for the HX PRO 370, which translates to a 101.8% advantage. This is the largest delta of any benchmark in the head-to-head comparison.

Q: Does the mobile processor win any benchmarks?

A: Yes, the HX PRO 370 wins three tests: PassMark single-thread (4,003 vs 3,474, +13.2%), PassMark singlethread (same scores), and PassMark physics (1,892 vs 1,715, +9.4%).

Q: What is the difference in core and thread counts?

A: The 5900XT has 16 cores and 32 threads, while the HX PRO 370 has 12 cores and 24 threads. The desktop chip has 4 more cores and 8 more threads.

Q: How do the boost clocks compare?

A: The 5900XT boosts to 4.80 GHz, while the HX PRO 370 boosts to 5.10 GHz. The mobile chip has a 0.30 GHz higher boost clock.

Q: What are the TDP ratings for each processor?

A: The 5900XT has a TDP of 105 watts, while the HX PRO 370 has a TDP of 28 watts. The mobile part consumes significantly less power by design.

Architecture Differences

The two processors belong to entirely different architectural generations and design philosophies. The Ryzen 9 5900XT is based on Zen 3 architecture with the codename Vermeer, manufactured on TSMC’s 7 nm process node. It uses a chiplet design with a die size of 2x 74 mm² and contains 8,300 million transistors. In contrast, the Ryzen AI 9 HX PRO 370 uses Zen 5 architecture with the codename Strix Point, manufactured on TSMC’s 4 nm process node. Its die size is a monolithic 233 mm².

Cache hierarchies differ substantially. The 5900XT provides 64 KB of L1 cache per core, 512 KB of L2 cache per core, and 64 MB of L3 cache. The HX PRO 370 offers 80 KB of L1 cache per core and 1 MB of L2 cache per core, but only 16 MB of L3 cache. This means the desktop chip has four times the total L3 cache, which likely contributes to its strong multicore performance in cache-sensitive workloads.

Memory support also diverges. The 5900XT uses DDR4 memory with dual-channel support and a memory bandwidth of 51.2 GB/s. The HX PRO 370 supports DDR5 and LPDDR5X memory, also dual-channel, but with a significantly higher memory bandwidth of 89.6 GB/s. Both processors support ECC memory, but their PCIe configurations differ: the 5900XT offers Gen 4 with 20 lanes (CPU only), while the HX PRO 370 offers Gen 4 with 16 lanes (CPU only).

The HX PRO 370 includes integrated Radeon 890M graphics, while the 5900XT has no integrated graphics (N/A). The mobile chip also has a locked multiplier, whereas the 5900XT has an unlocked multiplier for overclocking. The process node difference (7 nm vs 4 nm) explains part of the power efficiency gap, allowing the HX PRO 370 to deliver competitive single-thread performance at a fraction of the TDP.

Specification Differences

The most obvious specification difference is core count: 16 cores and 32 threads for the 5900XT versus 12 cores and 24 threads for the HX PRO 370. Base clocks differ dramatically, with the 5900XT running at 3.30 GHz versus 2.00 GHz for the mobile part. Boost clocks favor the HX PRO 370 at 5.10 GHz versus 4.80 GHz.

TDP is a major differentiator: 105 watts for the desktop chip versus 28 watts for the mobile chip. This nearly 4x difference in power envelope explains the performance trade-offs. The socket types are incompatible: AMD Socket AM4 for the 5900XT and AMD Socket FP8 for the HX PRO 370.

Memory support differs, with the 5900XT limited to DDR4 while the HX PRO 370 supports DDR5 and LPDDR5X. Memory bandwidth reflects this, at 51.2 GB/s versus 89.6 GB/s. The PCIe lane counts differ (20 lanes vs 16 lanes), though both are Gen 4.

Integrated graphics are present only on the HX PRO 370 (Radeon 890M), while the 5900XT has none. The multiplier is unlocked on the 5900XT but locked on the HX PRO 370. Release dates also differ, with the 5900XT launching on 2024-07-30 and the HX PRO 370 on 2025-01-05. The 5900XT has a launch MSRP of $349; the HX PRO 370 has no listed MSRP.

Where Each One Wins

The Ryzen 9 5900XT wins decisively in every rendering and compute-heavy workload tested. Its Cinebench R23 multicore score of 37,373 versus 18,520 makes it the clear choice for video rendering, 3D model compilation, and any batch processing task that leverages many threads. The 101.8% advantage in this test, along with 18.5% in Cinebench R15 multicore, demonstrates that the extra 4 cores and 8 threads translate directly into throughput gains.

The 5900XT also wins in all PassMark compute tests except physics and single-thread. Its 81.9% lead in data encryption (37,814 vs 20,788) and 48.3% lead in data compression (597,862 vs 403,113) indicate strength in security, archiving, and database workloads. The 39% advantage in extended instructions (39,141 vs 28,165) and 48% in integer math (177,566 vs 120,016) further cement its position for scientific computing and financial modeling. The 35.2% lead in floating-point math (99,398 vs 73,493) supports its use in engineering simulations.

The Ryzen AI 9 HX PRO 370 wins in single-thread performance, with a 13.2% lead in PassMark single-thread (4,003 vs 3,474). This makes it the better choice for lightly threaded applications like web browsing, office productivity, and legacy software that cannot utilize many cores. Its physics score of 1,892 versus 1,715 (+9.4%) suggests an advantage in certain simulation or gaming physics workloads. The mobile chip’s 28-watt TDP and integrated Radeon 890M graphics make it suitable for thin-and-light laptops where power efficiency is paramount.

The Verdict

The data presents a clear split: the Ryzen 9 5900XT is the performance king for multi-threaded desktop workloads, while the Ryzen AI 9 HX PRO 370 excels in single-thread efficiency and mobile form factors. The 5900XT wins 12 of 15 head-to-head benchmarks and delivers a 101.8% advantage in Cinebench R23 multicore, making it the obvious choice for users who need maximum compute throughput in a desktop system. Its 64 MB of L3 cache, 16-core configuration, and unlocked multiplier provide a strong foundation for content creation, virtualization, and heavy parallel processing.

The HX PRO 370’s wins in single-thread performance and physics, combined with its 4 nm process node and 28-watt TDP, make it the superior option for mobile professionals who prioritize battery life and portability. Its 5.10 GHz boost clock and Zen 5 architecture deliver competitive single-thread speed, while the integrated Radeon 890M graphics eliminate the need for a discrete GPU in many scenarios. The 89.6 GB/s memory bandwidth supports DDR5 and LPDDR5X, offering faster memory access despite the smaller 16 MB L3 cache.

Benchmark results indicate that the 5900XT’s 105-watt TDP is justified for users who can accommodate a desktop system with adequate cooling. The HX PRO 370, with its 2.00 GHz base clock, relies on boost behavior to deliver its performance, making it less predictable under sustained loads. For users choosing between these two, the decision hinges on form factor and power budget: desktops favor the 5900XT, while laptops and compact systems favor the HX PRO 370. The average benchmark scores, separated by only 0.5%, suggest that either processor will handle most tasks competently, but the specific workload distribution determines which one excels.