AMD Ryzen 9 9950X vs AMD Ryzen AI 9 HX 370 Comparison

The Verdict

The data is unambiguous: the AMD Ryzen 9 9950X wins all 23 head-to-head benchmark comparisons against the AMD Ryzen AI 9 HX 370, with zero wins for the mobile part. The desktop chip's average benchmark score of 74640 places it in the 94th percentile of all CPUs, while the HX 370's average of 37904 sits at the 86th percentile. The 9950X leads by margins ranging from 9.1% in Cinebench R23 single-core to a massive 173.8% in PassMark's find prime numbers test.

The desktop processor is the clear choice for any workload where raw compute throughput is the priority. Its 16 cores and 32 threads, combined with a 5.70 GHz boost clock, deliver roughly double the multi-threaded performance of the mobile part across every recorded measure. The HX 370, with its 12 cores, 24 threads, and 5.10 GHz boost, still posts respectable results in the 86th percentile, but it cannot close the gap in any tested scenario.

For mobile users, the HX 370 offers a 28 W TDP against the 9950X's 170 W, making it the only sensible pick for battery-powered systems. The desktop part is locked to AMD Socket AM5, while the mobile chip uses Socket FP8, so platform choice largely determines the selection. The data shows no scenario where the HX 370 outperforms the 9950X, but the power envelope difference means the mobile chip serves a completely different market segment.

Architecture Differences

Both processors share the Zen 5 architecture and are fabricated on TSMC's 4 nm process node, but they diverge significantly in physical design and feature set. The 9950X uses the Granite Ridge codename with a dual-chiplet layout, each die measuring 70.6 mm², totaling 16,630 million transistors. The HX 370 uses the Strix Point codename with a monolithic 233 mm² die, combining Zen 5 and Zen 5c cores in its Ryzen AI 300 series generation.

Cache allocation differs sharply. Both parts provide 80 KB of L1 per core and 1 MB of L2 per core, but the 9950X has 64 MB of L3 cache, four times the 16 MB found on the HX 370. This L3 disparity directly contributes to the desktop chip's superior performance in cache-sensitive workloads like data compression and encryption benchmarks.

Memory support also separates the two. The 9950X supports DDR5 only, while the HX 370 supports both DDR5 and LPDDR5X. Both run dual-channel memory buses with identical 89.6 GB/s bandwidth figures. ECC memory is supported on the desktop part but not on the mobile chip, a critical distinction for workstation reliability.

The integrated graphics differ: the 9950X carries a standard Radeon Graphics solution, while the HX 370 features the Radeon 890M, reflecting the mobile chip's need for more capable onboard visuals. PCIe connectivity also diverges, with the 9950X offering Gen 5 with 24 CPU lanes versus the HX 370's Gen 4 with 16 lanes. The desktop part has an unlocked multiplier, whereas the mobile chip is locked.

Head-to-Head Benchmarks

The largest single victory for the 9950X comes in PassMark's find prime numbers test, where it scores 345 against the HX 370's 126, a 173.8% advantage. This workload heavily favors the desktop chip's higher core count and larger cache. In PassMark extended instructions, the 9950X leads 71564 to 31653, a 126.1% gap, demonstrating superior SIMD and vector processing capability.

Multi-threaded rendering tests show similar dominance. Cinebench R23 multicore sees the 9950X score 40924 versus 21761, an 88.1% lead. Cinebench R15 multicore shows a 85.8% advantage (6335 vs 3409.5). Geekbench multicore delivers a 68.1% margin (25616 vs 15242). The 3DMark 16-thread test results in a 73.7% win (16263 vs 9365), while 3DMark max threads shows 72.5% (16780 vs 9725).

Data-intensive workloads follow the same pattern. PassMark data compression shows the 9950X at 896544 versus 445719, a 101.1% lead. Data encryption results in 99.4% (44366 vs 22252). Floating point math scores 159063 against 76892, a 106.9% gap. Integer math gives 96.9% (242097 vs 122933). Random string sorting completes at 93.7% (94368 vs 48723). PassMark multithread shows 87.9% (66030 vs 35148).

Single-threaded tests narrow the gap but still favor the desktop chip. Cinebench R23 single-core shows just 9.1% (2202 vs 2018), while Cinebench R15 single-core gives 12.2% (344 vs 306.5). Geekbench single-core shows 25.8% (3029 vs 2407). 3DMark single-thread gives 12.1% (1293 vs 1153). PassMark single-thread shows 19.2% (4737 vs 3973). The 3DMark 2-thread test is the closest overall at 16.7% (2543 vs 2179), while 3DMark 4-thread gives 24.9% (4958 vs 3970) and 8-thread gives 33% (9298 vs 6992). PassMark physics shows 74.3% (3279 vs 1881).

Specification Differences

The two processors differ across nearly every specification field. The 9950X has 16 cores and 32 threads, while the HX 370 has 12 cores and 24 threads. Base clocks diverge dramatically: 4.30 GHz for the desktop part versus 2.00 GHz for the mobile chip. Boost clocks reach 5.70 GHz and 5.10 GHz respectively.

TDP ratings show the largest gap: 170 W for the 9950X versus 28 W for the HX 370. The desktop part uses AMD Socket AM5, the mobile chip uses AMD Socket FP8. Codename differs (Granite Ridge vs Strix Point), as does generation (Ryzen 9 Zen 5 Granite Ridge vs Ryzen AI 300 Zen 5/Zen 5c). The 9950X has a 2x 70.6 mm² die configuration, while the HX 370 uses a single 233 mm² die. Transistor count is listed only for the desktop part at 16,630 million.

L3 cache is 64 MB on the 9950X versus 16 MB on the HX 370. Memory support adds LPDDR5X to the mobile chip. ECC support exists only on the desktop part. PCIe generation and lane counts differ (Gen 5, 24 lanes vs Gen 4, 16 lanes). Integrated graphics models differ (Radeon Graphics vs Radeon 890M). The desktop part has an unlocked multiplier, the mobile part does not. Market segment is Desktop versus Mobile. The 9950X has a launch MSRP of $649, while the HX 370 has no recorded launch price.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 9 9950X has 16 cores and 32 threads, while the AMD Ryzen AI 9 HX 370 has 12 cores and 24 threads.

Q: How does multi-threaded performance compare?

A: The 9950X leads by 88.1% in Cinebench R23 multicore (40924 vs 21761) and by 87.9% in PassMark multithread (66030 vs 35148). In Geekbench multicore, the lead is 68.1% (25616 vs 15242).

Q: What are the power consumption differences?

A: The 9950X has a TDP of 170 W, while the HX 370 has a TDP of 28 W. This reflects the desktop versus mobile design targets.

Q: Do both processors use the same architecture?

A: Both use Zen 5 architecture on a 4 nm TSMC process node, but the 9950X uses the Granite Ridge codename with a dual-die design, while the HX 370 uses the Strix Point codename with a monolithic die.

Q: Which processor supports faster PCIe?

A: The 9950X supports PCIe Gen 5 with 24 CPU lanes, while the HX 370 supports PCIe Gen 4 with 16 CPU lanes.

Q: Is ECC memory supported on both?

A: No. The 9950X supports ECC memory, but the HX 370 does not.

Where Each One Wins

The AMD Ryzen 9 9950X wins every single recorded benchmark comparison, but the nature of its victories varies by workload type. The largest margins appear in compute-heavy, cache-intensive tasks: prime number finding (173.8% lead), extended instructions (126.1%), floating point math (106.9%), and data compression (101.1%). These results point to workloads like scientific computing, financial modeling, video encoding, and database processing as the desktop chip's home turf. The 9950X's 64 MB L3 cache and 16 full Zen 5 cores give it a decisive edge in any task that scales with core count or benefits from large on-die caches.

The HX 370, despite losing all comparisons, has one clear advantage: power efficiency. Its 28 W TDP allows deployment in thin-and-light laptops where a 170 W desktop processor cannot operate. The mobile chip's support for LPDDR5X memory and its Radeon 890M integrated graphics make it a complete mobile platform solution. In single-threaded tasks, the gap narrows to single digits in some tests (9.1% in Cinebench R23 single-core), suggesting that the HX 370 remains competitive for everyday responsive computing where multi-threaded scaling is less important.

For users building a desktop workstation or high-end gaming PC with access to AM5 motherboards and sufficient cooling, the 9950X is the only choice based on the data. Its 94th percentile ranking versus the HX 370's 86th percentile confirms its higher ceiling. For users requiring a laptop processor that balances performance with mobility, the HX 370's 86th percentile placement shows it sits among capable desktop-class chips from the previous generation, even though it cannot match the 9950X in any metric.

The socket and platform requirements make direct substitution impossible. The 9950X demands an AM5 motherboard and likely a robust cooling solution given its 170 W TDP and 5.70 GHz boost clock. The HX 370 is soldered into laptops with FP8 sockets, making it non-upgradeable. The data shows no scenario where the HX 370 outperforms the 9950X, but the two parts target mutually exclusive physical platforms, so the choice is dictated more by form factor than by raw performance.