AMD Ryzen 9 5900XT vs AMD Ryzen AI Embedded P164 Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear split between these two processors. The AMD Ryzen AI Embedded P164 wins the single-threaded contest, while the AMD Ryzen 9 5900XT dominates every multithreaded workload in the comparison. Out of 11 head-to-head tests, the 5900XT claims 9 victories, leaving the P164 with just 2 wins, both of which are the same single-thread test.

The most decisive margin belongs to the Ryzen 9 5900XT in the prime number search test. It scores 205 against the P164's 71, a gap of 65.4%. This is the largest delta in the entire comparison and reflects the 5900XT's raw compute throughput advantage in heavily parallel integer workloads.

Data encryption shows a similar story. The 5900XT posts 37,814, while the P164 manages 16,055, a 57.5% deficit. Integer math follows closely, with the 5900XT at 177,566 versus 87,940, a 50.5% difference. Both results indicate that the 16-core desktop part simply overwhelms the 8-core embedded part when all threads are engaged.

The multithread score, which serves as a general throughput indicator, lands at 43,810 for the 5900XT and 25,889 for the P164. That is a 40.9% advantage for the desktop chip. The data compression test records 597,862 for the 5900XT and 327,891 for the P164, a 45.2% gap. Floating point math shows 99,398 versus 55,799, a 43.9% difference. Random string sorting completes the sweep of large margin victories, with 62,537 against 34,801, a 44.4% gap.

The extended instructions test narrows the margin somewhat, but the 5900XT still wins decisively at 39,141 versus 24,193, a 38.2% advantage. Physics simulation is the closest multithreaded result, with the 5900XT scoring 1,715 against 1,210, still a 29.4% gap.

The P164's sole claim to superiority comes in single-thread performance. It scores 4,029, beating the 5900XT's 3,474 by 16%. This is a noteworthy result. The P164 uses a newer Zen 5 core design on a 4 nm process, while the 5900XT relies on the older Zen 3 architecture on 7 nm. The newer core delivers higher clock speeds per thread, with a boost clock of 5.00 GHz against 4.80 GHz for the 5900XT.

Looking at the broader database context, the P164 sits at the 91st percentile of all CPUs, while the 5900XT sits at the 90th percentile. Their average benchmark scores are close, 52,901 for the P164 and 50,718 for the 5900XT. The P164's nearest rivals include the AMD Ryzen 5 9500F at 52,873 (0.1% behind), the Intel Xeon 634 at 52,974 (0.1% ahead), the AMD EPYC 7313P at 53,206 (0.6% ahead), and the AMD Ryzen 9 7900X at 53,288 (0.7% ahead). The 5900XT's nearest rivals include the Intel Core i7-13850HX at 50,761 (0.1% ahead), the AMD Ryzen AI 9 HX PRO 370 at 50,448 (0.5% behind), the Intel Core i9-14900T at 51,015 (0.6% ahead), and the Intel Core i9-13980HX at 50,398 (0.6% behind).

The data shows that the P164 achieves its high average score despite having half the cores and threads of the 5900XT. This confirms the efficiency of its newer architecture. However, in absolute multithreaded throughput, the 5900XT remains the stronger part by a wide margin.

FAQ

Q: Which processor wins the single-thread benchmark?

A: The AMD Ryzen AI Embedded P164 wins the PassMark single-thread test with a score of 4,029, beating the AMD Ryzen 9 5900XT's 3,474 by 16%.

Q: How much faster is the Ryzen 9 5900XT in the multithread test?

A: The 5900XT scores 43,810 in the PassMark multithread test, while the P164 scores 25,889. That is a 40.9% advantage for the 5900XT.

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

A: The largest gap is in the find prime numbers test, where the 5900XT scores 205 versus 71 for the P164, a 65.4% difference.

Q: How do the two processors compare in the overall database ranking?

A: The P164 sits at the 91st percentile of all CPUs, while the 5900XT sits at the 90th percentile. Their average benchmark scores are 52,901 and 50,718 respectively.

Q: Does the P164 have any advantage in data encryption?

A: No. The 5900XT wins the data encryption test with 37,814 against 16,055 for the P164, a 57.5% advantage.

Q: Which processor has a higher boost clock?

A: The P164 has a boost clock of 5.00 GHz, while the 5900XT boosts to 4.80 GHz.

The Verdict

The data supports a straightforward recommendation based on workload. For applications that depend heavily on multithreaded throughput, the AMD Ryzen 9 5900XT is the clear choice. It wins every parallel workload in the comparison, with margins ranging from 29.4% in physics to 65.4% in prime number search. Its 16 cores and 32 threads provide a substantial advantage over the 8 cores and 16 threads of the P164, and its 64 MB of L3 cache is eight times larger.

For single-threaded performance, the AMD Ryzen AI Embedded P164 is the superior part. Its 16% lead in the single-thread test is meaningful for lightly threaded applications, and its 5.00 GHz boost clock is the highest among the two. The data also shows that the P164 achieves a higher overall average benchmark score (52,901 versus 50,718) and a higher percentile ranking (91st versus 90th), despite having half the cores.

However, context matters. The P164 is a mobile-class processor with a 28 W TDP, designed for embedded systems. The 5900XT is a desktop part with a 105 W TDP and an unlocked multiplier. These are different products for different use cases. The P164 offers integrated Radeon 880M graphics and support for DDR5 and LPDDR5X memory, while the 5900XT has no integrated graphics and uses DDR4. Buyers in the embedded market will prioritize the P164's feature set and efficiency. Buyers building a desktop system that values raw multithreaded performance should choose the 5900XT.

Specification Differences

The two processors differ in nearly every major specification category. The P164 has 8 cores and 16 threads, while the 5900XT has 16 cores and 32 threads. Base clocks differ significantly: the P164 runs at 2.00 GHz, while the 5900XT runs at 3.30 GHz. Boost clocks also differ, with the P164 reaching 5.00 GHz and the 5900XT reaching 4.80 GHz.

Thermal design power is a major differentiator. The P164 is rated at 28 W, while the 5900XT is rated at 105 W. The P164 uses AMD Socket FP8, while the 5900XT uses AMD Socket AM4. The P164 has a die size of 233 mm², while the 5900XT has a dual-die design of 2x 74 mm². The 5900XT has 8,300 million transistors, while the P164's transistor count is not recorded.

Cache configurations are also different. The P164 has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 8 MB of L3 cache. The 5900XT has 64 KB of L1 per core, 512 KB of L2 per core, and 64 MB of L3 cache. Memory support diverges sharply: the P164 supports DDR5 and LPDDR5X with dual-channel memory bandwidth of 89.6 GB/s, while the 5900XT supports DDR4 with dual-channel memory bandwidth of 51.2 GB/s. Both support ECC memory.

PCIe lanes differ, with the P164 offering Gen 4 with 16 CPU lanes and the 5900XT offering Gen 4 with 20 CPU lanes. The P164 includes integrated Radeon 880M graphics, while the 5900XT has no integrated graphics. The 5900XT has an unlocked multiplier and a launch MSRP of $349. The P164's multiplier is locked and it has no recorded launch MSRP. The 5900XT's part number is 100-000001581, while the P164's part number is unknown.

Architecture Differences

The architectural divide between these two processors is substantial. The P164 is built on the Gorgon Point codename and belongs to the Ryzen AI Embedded generation, which uses a mix of Zen 5 and Zen 5c cores. The 5900XT is built on the Vermeer codename and uses the Zen 3 architecture from the Ryzen 9 generation.

Process technology is a key differentiator. The P164 is fabricated on TSMC's 4 nm process, while the 5900XT uses TSMC's 7 nm process. This newer node contributes to the P164's significantly lower 28 W TDP and its higher boost clock of 5.00 GHz.

The P164's memory controller supports DDR5 and LPDDR5X, reflecting a modern platform. The 5900XT's memory controller is limited to DDR4. This difference affects memory bandwidth, with the P164 achieving 89.6 GB/s versus 51.2 GB/s for the 5900XT.

Integrated graphics is another architectural distinction. The P164 includes a Radeon 880M GPU, while the 5900XT has no integrated graphics. For embedded systems that require a display output without a discrete GPU, this is a significant feature. The 5900XT requires a separate graphics card.

The 5900XT's unlocked multiplier makes it suitable for overclocking, while the P164's locked multiplier does not. The 5900XT also uses a dual-chiplet design with a 2x 74 mm² die size, while the P164 uses a single 233 mm² die. The 5900XT's L3 cache of 64 MB is eight times larger than the P164's 8 MB, which helps explain its strong performance in cache-sensitive multithreaded workloads.

Release dates differ as well, with the P164 having a release date of March 8, 2026, and the 5900XT having a release date of July 30, 2024. Both processors remain in active production. The P164 targets the mobile and embedded market segment, while the 5900XT targets the desktop segment. These architectural choices explain the benchmark results: the P164 leverages a modern, efficient design for single-thread and embedded use cases, while the 5900XT leverages core count and cache size for multithreaded desktop workloads.