AMD EPYC 7443P vs AMD Ryzen AI Max+ PRO 395 Comparison

The AMD EPYC 7443P and AMD Ryzen AI Max+ PRO 395 represent two entirely different philosophies from the same manufacturer: one is a 24-core server behemoth built for sustained throughput, the other a 16-core mobile powerhouse designed for efficiency and single-thread agility. The benchmark data shows a clear split, with the EPYC 7443P claiming 11 of the 15 head-to-head tests, while the Ryzen AI Max+ PRO 395 takes 4 wins, mostly in areas that favor its newer Zen 5 architecture and higher clock speeds. The overall average benchmark scores are remarkably close—81,661 for the EPYC versus 80,762 for the Ryzen—a difference of just 1.1%, placing both in the top percentile of all CPUs (96th for the EPYC, 95th for the Ryzen). This near-parity in aggregate scores masks the very different ways each processor achieves its results.

Head-to-Head Benchmarks

The most striking divergence appears in single-core performance, where the two processors are not merely different but almost opposite in capability. In Cinebench R23 single-core, the EPYC 7443P scores 6,837 against the Ryzen's 2,012.5, a massive 239.7% advantage. Similarly, in Cinebench R15 single-core, the EPYC leads 689 to 306, a 125.2% margin. These are not marginal wins; they represent a fundamental difference in how each chip handles lightly threaded workloads. The EPYC's Zen 3 architecture, despite its age, delivers vastly superior single-thread results in these specific Cinebench tests, likely due to the test's sensitivity to the processor's design priorities. However, the picture flips in PassMark's single-thread test, where the Ryzen AI Max+ PRO 395 scores 4,078 versus the EPYC's 2,907, giving the Ryzen a 28.7% lead. This contradictory result suggests the two benchmarks measure different aspects of single-thread performance, with Cinebench favoring the EPYC's older but more robust core design in this scenario, while PassMark rewards the Ryzen's higher 5.10 GHz boost clock versus the EPYC's 4.00 GHz.

In multi-core workloads, the EPYC 7443P generally dominates, but the margin varies wildly by test. The EPYC wins Cinebench R23 multi-core with 48,433 points against 35,061 for the Ryzen, a 38.1% advantage that reflects its 24 cores and 48 threads versus the Ryzen's 16 cores and 32 threads. Yet in Cinebench R15 multi-core, the Ryzen actually wins, scoring 5,247 to the EPYC's 4,881, a 7% lead. This reversal is puzzling given the EPYC's core advantage, but it suggests the Ryzen's newer Zen 5 cores are more efficient in this older benchmark version. The PassMark multi-thread test shows the EPYC ahead by 10.6% (56,981 vs 51,502), while the EPYC's wins in integer math (232,632 vs 190,720, a 22% lead), floating-point math (129,932 vs 120,533, a 7.8% lead), and prime number finding (410 vs 284, a 44.4% lead) all confirm its throughput advantage in compute-heavy tasks.

The EPYC's dominance extends to specialized workloads. In data compression, it scores 820,859 against the Ryzen's 639,356, a 28.4% win. Data encryption shows an even larger gap: 57,263 versus 32,840, a 74.4% advantage. Random string sorting goes to the EPYC by 36.3% (95,581 vs 70,150), and physics simulation favors the EPYC by 48.9% (4,748 vs 3,189). The Ryzen's only other win besides the Cinebench R15 multi-core and the PassMark single-thread tests is in extended instructions, where it scores 52,067 against the EPYC's 48,213, a 7.4% margin. These results paint a clear picture: the EPYC 7443P is the workhorse for data-heavy and multi-threaded tasks, while the Ryzen AI Max+ PRO 395 excels in scenarios that leverage its newer instruction set and higher clock speeds.

The Verdict

The data supports a straightforward conclusion: the AMD EPYC 7443P is the superior processor for server and workstation workloads that demand maximum multi-threaded throughput. Its wins in 11 of 15 benchmarks, including the critical areas of data encryption (74.4% ahead), prime number finding (44.4% ahead), and Cinebench R23 multi-core (38.1% ahead), demonstrate that its 24 cores and 128 MB of shared L3 cache deliver tangible benefits in compute-heavy environments. The EPYC's 96th percentile ranking among all CPUs, combined with its average benchmark score of 81,661, places it slightly ahead of the Ryzen's 80,762 average. For users running virtualization, database workloads, or scientific simulations, the EPYC's consistent multi-core leads make it the clear choice.

Conversely, the Ryzen AI Max+ PRO 395 is the better option for scenarios where single-thread performance and power efficiency are paramount. Its 28.7% lead in PassMark single-thread performance and its 7% win in Cinebench R15 multi-core suggest that its Zen 5 architecture, despite having fewer cores, can handle certain workloads competitively. The Ryzen's 55 TDP versus the EPYC's 200 TDP indicates a dramatic efficiency advantage, making it suitable for mobile workstations or compact systems where thermal and power constraints are critical. However, its 95th percentile ranking and lower average score mean it trails the EPYC in overall throughput. The Verdict is clear: choose the EPYC 7443P for raw compute density and multi-threaded server tasks; choose the Ryzen AI Max+ PRO 395 for single-thread responsiveness and power-efficient computing.

Where Each One Wins

The EPYC 7443P wins decisively in security and data processing tasks. Its 74.4% lead in data encryption makes it the obvious pick for applications involving cryptography, secure communications, or data-at-rest protection. Similarly, its 44.4% advantage in prime number finding positions it well for mathematical computations and certain types of scientific research. The 28.4% lead in data compression indicates superiority in file archiving, database indexing, and data transfer workloads. For physics simulations, the EPYC's 48.9% margin suggests it handles complex modeling and finite element analysis more effectively. Integer math (22% lead) and floating-point math (7.8% lead) further confirm its strength in general-purpose computing and numerical analysis. The random string sorting win by 36.3% points to advantages in text processing and data parsing applications.

The Ryzen AI Max+ PRO 395 wins in scenarios that reward its newer architecture and higher clock speeds. Its 28.7% lead in PassMark single-thread performance makes it suitable for applications with heavy single-threaded dependencies, such as certain legacy software, some gaming workloads, or interactive applications where responsiveness is key. The 7.4% win in extended instructions suggests it handles SIMD and vectorized code more efficiently, benefiting multimedia processing, some AI inference tasks, and certain scientific computing libraries. Its Cinebench R15 multi-core win by 7% indicates that for older software optimized for fewer threads, the Ryzen's faster cores can overcome the EPYC's core count advantage. The Ryzen's integrated Radeon 8060S graphics also gives it a unique advantage for systems requiring GPU acceleration without a discrete card, a feature the EPYC lacks entirely.

FAQ

Q: Which processor has a higher average benchmark score?

A: The AMD EPYC 7443P has a higher average benchmark score of 81,661, compared to the AMD Ryzen AI Max+ PRO 395's 80,762, a difference of 1.1%.

Q: How many cores and threads does each processor have?

A: The EPYC 7443P has 24 cores and 48 threads, while the Ryzen AI Max+ PRO 395 has 16 cores and 32 threads.

Q: What is the single-core performance difference in Cinebench R23?

A: The EPYC 7443P scores 6,837 in Cinebench R23 single-core, which is 239.7% higher than the Ryzen AI Max+ PRO 395's score of 2,012.5.

Q: Which processor has a higher boost clock?

A: The Ryzen AI Max+ PRO 395 has a boost clock of 5.10 GHz, which is higher than the EPYC 7443P's boost clock of 4.00 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the EPYC 7443P and the Ryzen AI Max+ PRO 395 support ECC memory.

Q: Which processor has a larger L3 cache?

A: The EPYC 7443P has a shared L3 cache of 128 MB, while the Ryzen AI Max+ PRO 395 has a shared L3 cache of 64 MB.

Architecture Differences

The EPYC 7443P is built on the Zen 3 architecture, codenamed Milan, using a 7 nm process from TSMC. It packs 16,600 million transistors across a die size of 4x 81 mm². This is a server-class design with a 200 W TDP, designed for the AMD Socket SP3 platform. The Ryzen AI Max+ PRO 395, in contrast, uses the Zen 5 architecture, codenamed Strix Halo, manufactured on a 4 nm process, also from TSMC. This is a mobile processor with a 55 W TDP, using the AMD Socket FP11. The transistor count and die size for the Ryzen are not specified in the data.

Cache configurations differ significantly between the two. The EPYC has 64 KB of L1 cache per core and 512 KB of L2 cache per core, with a massive 128 MB of shared L3 cache. The Ryzen has a larger 80 KB of L1 cache per core and 1 MB of L2 cache per core, but only 64 MB of shared L3 cache. This means the EPYC's total cache hierarchy is designed for larger working sets and more concurrent threads, while the Ryzen's per-core cache is more generous, potentially benefiting single-threaded performance.

The memory architectures are also distinct. The EPYC supports DDR4 memory with an eight-channel memory bus, providing a memory bandwidth of 204.8 GB/s. The Ryzen uses LPDDR5X memory with a quad-channel bus, but achieves a higher memory bandwidth of 256.0 GB/s. Both support ECC memory. PCIe connectivity is another major difference: the EPYC offers Gen 4 with 128 lanes (CPU only), while the Ryzen offers Gen 4 with only 16 lanes (CPU only). This makes the EPYC far more suitable for systems with many expansion cards, GPUs, or NVMe drives.

Specification Differences

The most obvious specification difference is core count: the EPYC 7443P has 24 cores and 48 threads, while the Ryzen AI Max+ PRO 395 has 16 cores and 32 threads. Base clocks are similar, with the EPYC at 2.85 GHz and the Ryzen at 3.00 GHz, but the boost clocks diverge sharply, with the EPYC at 4.00 GHz and the Ryzen at 5.10 GHz. The TDP is a stark contrast: 200 W for the EPYC versus 55 W for the Ryzen, reflecting their different market segments.

Memory support differs fundamentally: the EPYC uses DDR4 with an eight-channel bus, while the Ryzen uses LPDDR5X with a quad-channel bus. The memory bandwidth is higher for the Ryzen at 256.0 GB/s versus the EPYC's 204.8 GB/s. PCIe lanes are a major differentiator: the EPYC provides 128 Gen 4 lanes, while the Ryzen provides only 16 Gen 4 lanes. The sockets are incompatible: SP3 for the EPYC and FP11 for the Ryzen. The EPYC has no integrated graphics, while the Ryzen includes a Radeon 8060S GPU. Release dates differ, with the EPYC launching on 2021-03-14 and the Ryzen on 2025-01-05. The EPYC has a launch MSRP of $1337, while the Ryzen has no listed MSRP. Both have locked multipliers. The EPYC's part number is 100-000000342100-100000342WOF, while the Ryzen's is 100-000001243. The EPYC is in the EPYC 7003 series, while the Ryzen is in the Ryzen AI Max+ PRO series.