AMD Ryzen 9 9955HX vs AMD Ryzen AI Embedded P132 Comparison

Head-to-Head Benchmarks

The benchmark data shows a decisive sweep for the AMD Ryzen 9 9955HX across all eleven recorded tests, with no wins recorded for the AMD Ryzen AI Embedded P132. The largest margin appears in the passmark_find_prime_numbers test, where the Ryzen 9 9955HX scores 287 against the P132's 57, a delta of 403.5 percent. This test stresses integer-heavy iterative workloads, and the gap reflects the substantial difference in core and thread counts between the two processors.

In passmark_extended_instructions, the Ryzen 9 9955HX delivers 57,946 points versus the P132's 16,520, a 250.8 percent advantage. This test measures SIMD and extended instruction set efficiency, where the 16-core, 32-thread configuration of the Ryzen 9 9955HX provides far more parallel execution resources. Similarly, passmark_integer_math shows the Ryzen 9 9955HX at 212,598 against 62,249 for the P132, a 241.5 percent delta, while passmark_floating_point_math records 136,682 versus 42,248, a 223.5 percent lead.

The encryption and compression workloads follow the same pattern. Passmark_data_encryption has the Ryzen 9 9955HX scoring 37,330 versus 11,444, a 226.2 percent difference, and passmark_data_compression shows 731,998 against 230,437, a 217.7 percent margin. These results indicate that the Ryzen 9 9955HX handles cryptographic and data-streaming tasks with significantly higher throughput, consistent with its larger L3 cache (64 MB shared versus 4 MB) and higher boost clock (5.40 GHz versus 4.50 GHz).

The multithread test, which aggregates performance across many concurrent threads, gives the Ryzen 9 9955HX a score of 56,171 versus 19,262 for the P132, a 191.6 percent delta. The physics test shows a 166.1 percent lead (2,720 versus 1,022), and random string sorting shows a 209.3 percent advantage (77,890 versus 25,181). Even in single-thread performance, where the core-count advantage is less relevant, the Ryzen 9 9955HX leads by 18.3 percent, scoring 4,393 against the P132's 3,713 in both passmark_single_thread and passmark_singlethread tests.

The overall average benchmark score reflects this dominance: the Ryzen 9 9955HX averages 91,199 points, while the P132 averages 37,804. In percentile terms against all CPUs, the Ryzen 9 9955HX sits at the 96th percentile, whereas the P132 sits at the 86th percentile. The nearest rivals for the Ryzen 9 9955HX include the Intel Xeon 654 (average score 90,717, delta 0.5 percent) and the AMD Ryzen AI Max+ 392 (average score 90,541, delta 0.7 percent), placing it in a tight cluster near the top of the database. The P132's nearest rivals, such as the Intel Core 5 211E (average score 37,829, delta -0.1 percent) and the AMD Ryzen AI 5 PRO 435 (average score 37,762, delta 0.1 percent), show it is competitive within its own lower-performance tier.

The Verdict

The recorded data leaves no ambiguity: the AMD Ryzen 9 9955HX outperforms the AMD Ryzen AI Embedded P132 in every single benchmark test in the database. The smallest margin, 18.3 percent in single-thread performance, is still a clear and consistent lead. The largest margins, exceeding 400 percent in prime-number finding and exceeding 250 percent in extended instructions, indicate that the Ryzen 9 9955HX is in a completely different performance class.

The Ryzen 9 9955HX achieves this with 16 cores and 32 threads, a base clock of 2.50 GHz, a boost clock of 5.40 GHz, and a 55 W TDP. The P132 offers 6 cores and 12 threads, a base clock of 2.00 GHz, a boost clock of 4.50 GHz, and a 28 W TDP. The thermal design power difference, 55 W versus 28 W, explains part of the performance gap, as does the 64 MB shared L3 cache versus 4 MB. The Ryzen 9 9955HX also uses PCIe Gen 5 with 28 lanes, while the P132 uses PCIe Gen 4 with 14 lanes, further separating their platform capabilities.

For workloads that depend on high core counts, large caches, and maximum boost frequencies, the Ryzen 9 9955HX is the clear choice based on the data. For workloads that prioritize lower power consumption and smaller physical footprint, the P132 may have an appeal, but the benchmark results show it sacrifices more than half of the Ryzen 9 9955HX's performance in most tests. The P132's average score of 37,804 is less than half of the Ryzen 9 9955HX's 91,199, and its percentile ranking of 86 versus 96 confirms the gap.

The data also shows that the Ryzen 9 9955HX competes favorably with much larger server-class processors. Its nearest rivals include the Intel Xeon 654 and the Intel Xeon 6520P, with the latter showing a delta of -2.8 percent against the Ryzen 9 9955HX. This suggests that the Ryzen 9 9955HX, despite being a mobile segment part, delivers performance comparable to enterprise Xeon parts in the database's average scoring.

Where Each One Wins

Based strictly on the benchmark data, the AMD Ryzen 9 9955HX wins in every category where both processors have recorded results. The most pronounced advantages are in compute-heavy, parallel workloads: prime-number finding (403.5 percent), extended instructions (250.8 percent), and integer math (241.5 percent). These tests benefit directly from the Ryzen 9 9955HX's 16 cores and 32 threads, as well as its 5.40 GHz boost clock, which allows both high parallelism and high per-core speed.

The Ryzen 9 9955HX also wins decisively in memory-sensitive tasks. Its 64 MB shared L3 cache is sixteen times larger than the P132's 4 MB L3, and the data shows this in random string sorting (209.3 percent lead) and data compression (217.7 percent lead). These workloads frequently access large datasets, and a larger cache reduces the frequency of slower memory accesses.

The P132, despite losing every benchmark, still has a role in the database for low-power embedded applications. Its 28 W TDP is roughly half of the Ryzen 9 9955HX's 55 W, and its 6-core, 12-thread configuration with a 4.50 GHz boost clock provides respectable single-thread performance (3,713 points, which is 18.3 percent behind the Ryzen 9 9955HX but still within a moderate gap). The P132 also supports DDR5 and LPDDR5X memory with dual-channel bandwidth of 89.6 GB/s, matching the Ryzen 9 9955HX's memory bandwidth, and it includes ECC memory support. Its integrated Radeon 840M graphics may be more capable than the Radeon 610M in the Ryzen 9 9955HX, though no graphics benchmarks are present in the database to confirm this.

For users who need the absolute highest multicore throughput, the Ryzen 9 9955HX is the only choice between these two. For users who need a lower-power embedded processor with a smaller core count, the P132 offers a more modest performance profile, but the data shows it cannot match the Ryzen 9 9955HX in any recorded metric.

FAQ

Q: How many benchmark tests does the AMD Ryzen 9 9955HX win over the AMD Ryzen AI Embedded P132?

A: The Ryzen 9 9955HX wins all 11 recorded head-to-head benchmarks, with the P132 winning zero tests.

Q: What is the largest performance difference between the two processors?

A: The largest delta is in passmark_find_prime_numbers, where the Ryzen 9 9955HX scores 287 versus the P132's 57, a 403.5 percent lead.

Q: How close is single-thread performance between the two?

A: The Ryzen 9 9955HX scores 4,393 in passmark_single_thread, which is 18.3 percent ahead of the P132's 3,713. This is the smallest margin of any test.

Q: What are the core and thread counts for each processor?

A: The Ryzen 9 9955HX has 16 cores and 32 threads, while the P132 has 6 cores and 12 threads.

Q: How do the average benchmark scores compare?

A: The Ryzen 9 9955HX has an average benchmark score of 91,199, while the P132 averages 37,804. The Ryzen 9 9955HX sits at the 96th percentile of all CPUs, and the P132 at the 86th percentile.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen 9 9955HX and the P132 list ECC memory support as true.

Architecture Differences

The two processors share the same manufacturing process (4 nm at TSMC) and the same Zen 5 core architecture, but they diverge significantly in configuration. The Ryzen 9 9955HX belongs to the 9000 series with the codename Fire Range, while the P132 is a Ryzen AI Embedded part with the codename Gorgon Point. The Ryzen 9 9955HX uses 16 cores and 32 threads, while the P132 uses 6 cores and 12 threads, and the P132's generation is listed as Zen 5 / Zen 5c, indicating a mix of full Zen 5 and more compact Zen 5c cores.

The cache hierarchy differs substantially. Both use 80 KB of L1 per core and 1 MB of L2 per core, but the Ryzen 9 9955HX has 64 MB of shared L3 cache, whereas the P132 has only 4 MB of L3. This 16-fold difference in shared cache is one of the most consequential architectural gaps, as it directly impacts data reuse and memory latency for workloads with large working sets.

Clock speeds also differ. The Ryzen 9 9955HX has a base clock of 2.50 GHz and a boost clock of 5.40 GHz, while the P132 has a base clock of 2.00 GHz and a boost clock of 4.50 GHz. The Ryzen 9 9955HX's higher boost clock, combined with more cores, explains its 18.3 percent single-thread advantage and its far larger multicore margins. The TDP reflects this: the Ryzen 9 9955HX is rated at 55 W, while the P132 is rated at 28 W.

The sockets are different: the Ryzen 9 9955HX uses AMD Socket FL1, and the P132 uses AMD Socket FP8. The Ryzen 9 9955HX also has an unlocked multiplier, whereas the P132 does not, which allows overclocking on the former if the platform permits it. PCIe support differs as well: the Ryzen 9 9955HX provides Gen 5 with 28 lanes (CPU only), while the P132 provides Gen 4 with 14 lanes (CPU only). This makes the Ryzen 9 9955HX more suitable for high-bandwidth peripherals such as Gen 5 NVMe storage or discrete GPUs.

Memory support is similar in bandwidth: both use dual-channel memory with 89.6 GB/s, and both support ECC. However, the Ryzen 9 9955HX lists DDR5 only, while the P132 supports both DDR5 and LPDDR5X, which may be advantageous in power-sensitive embedded designs. Integrated graphics differ, with the Ryzen 9 9955HX using Radeon 610M and the P132 using Radeon 840M, though no graphics benchmarks are recorded.

The release dates differ by more than a year: the Ryzen 9 9955HX was released on 2025-01-05, and the P132 on 2026-03-08. The Ryzen 9 9955HX has a known part number (100-000001028), while the P132's part number is listed as unknown. The Ryzen 9 9955HX also has a transistor count of 16,630 million and a die size of 2x 70.6 mm², while these figures are not recorded for the P132. Both processors are listed as active in production, and both target the mobile market segment.