AMD EPYC 7443P vs AMD Ryzen 7 PRO 9755 Comparison

The AMD EPYC 7443P and AMD Ryzen 7 PRO 9755 are both AMD server and workstation processors, but they are engineered for entirely different workloads. The EPYC 7443P is a 24-core Zen 3 part built for massive parallel throughput, while the Ryzen 7 PRO 9755 is an 8-core Zen 5 part with a focus on high clock speeds. The benchmark data shows a clear split: the EPYC dominates every multithreaded metric, while the Ryzen wins decisively in single-thread performance. This analysis breaks down the recorded scores to determine which processor suits which task.

Head-to-Head Benchmarks

The EPYC 7443P wins 9 of the 11 head-to-head benchmark comparisons. Its largest victory comes in data encryption, where it scores 57,263 against the Ryzen’s 22,577, a delta of 153.6%. This indicates the EPYC’s eight-channel memory bus and 128 MB of shared L3 cache provide a massive advantage in cryptographic workloads.

The EPYC also dominates in physics calculations, scoring 4,748 versus 2,257, a 110.4% advantage. Find prime numbers shows a similar story: 410 for the EPYC versus 197 for the Ryzen, a 108.1% delta. Integer math results are equally lopsided, with the EPYC at 232,632 and the Ryzen at 122,411, representing a 90% lead. Data compression sees the EPYC at 820,859 against 467,988, a 75.4% gap, and random string sorting shows a 93.8% advantage (95,581 vs 49,326).

Multithreaded performance follows the same pattern. The passmark multithread score is 56,981 for the EPYC versus 38,721 for the Ryzen, a 47.2% delta. Floating point math also favors the EPYC: 129,932 versus 81,456, a 59.5% lead. Even in extended instructions, where the gap narrows, the EPYC still wins at 48,213 versus 38,976, a 23.7% advantage.

The Ryzen 7 PRO 9755’s only wins come in single-thread performance. It scores 4,606 in passmark single thread versus 2,907 for the EPYC, a 36.9% delta in favor of the Ryzen. This is a significant margin, reflecting the Ryzen’s 5.40 GHz boost clock versus the EPYC’s 4.00 GHz. The two single-thread benchmarks are identical in this dataset, both showing the same scores and deltas.

FAQ

Q: Which processor has better multithreaded performance?

A: The AMD EPYC 7443P. It wins the passmark multithread test with 56,981 points versus 38,721 for the Ryzen 7 PRO 9755, a 47.2% advantage. It also wins all other multithreaded workloads, including integer math (232,632 vs 122,411) and floating point math (129,932 vs 81,456).

Q: Is the Ryzen 7 PRO 9755 faster in single-core tasks?

A: Yes. The Ryzen scores 4,606 in passmark single thread, while the EPYC scores 2,907. This is a 36.9% delta in favor of the Ryzen, making it the clear choice for lightly threaded applications.

Q: How do these processors compare in data encryption?

A: The EPYC 7443P is dramatically better. It scores 57,263 in passmark data encryption versus 22,577 for the Ryzen, a 153.6% advantage. This is the largest performance gap in the entire benchmark set.

Q: What about memory bandwidth?

A: The EPYC 7443P supports DDR4 memory with an eight-channel bus and a recorded bandwidth of 204.8 GB/s. The Ryzen 7 PRO 9755 supports DDR5 with a dual-channel bus and 89.6 GB/s bandwidth. The EPYC’s bandwidth is more than double, which explains its dominance in memory-intensive workloads.

Q: Which processor has more cores and threads?

A: The EPYC 7443P has 24 cores and 48 threads. The Ryzen 7 PRO 9755 has 8 cores and 16 threads. The EPYC offers triple the cores and threads of the Ryzen.

Q: Do both support ECC memory?

A: Yes. Both the EPYC 7443P and the Ryzen 7 PRO 9755 have ECC memory support enabled in the database.

Where Each One Wins

The EPYC 7443P is the winner for any workload that scales with core count and memory bandwidth. The data shows a 47.2% lead in multithreaded performance, a 90% lead in integer math, and a 59.5% lead in floating point math. Data compression, encryption, physics, prime number calculation, and random string sorting all favor the EPYC by margins ranging from 23.7% to 153.6%. This processor is designed for server virtualization, database workloads, and scientific computing where parallel execution is constant.

The Ryzen 7 PRO 9755 wins only in single-thread performance, with a 36.9% advantage over the EPYC. This makes it the better choice for applications that are latency-sensitive or rely on a single powerful core, such as interactive workloads, certain simulation steps, and legacy software that does not scale across many threads. The Ryzen’s 5.40 GHz boost clock is substantially higher than the EPYC’s 4.00 GHz, which directly contributes to this win.

Specification Differences

The two processors differ in nearly every core specification. The EPYC 7443P has 24 cores and 48 threads, while the Ryzen 7 PRO 9755 has 8 cores and 16 threads. Base clocks differ: 2.85 GHz for the EPYC versus 3.80 GHz for the Ryzen. Boost clocks also differ: 4.00 GHz versus 5.40 GHz. The EPYC has a TDP of 200 watts, while the Ryzen has a TDP of 120 watts.

Sockets are different: the EPYC uses AMD Socket SP3, while the Ryzen uses AMD Socket AM5. Memory support differs: the EPYC uses DDR4 with an eight-channel bus and 204.8 GB/s bandwidth; the Ryzen uses DDR5 with a dual-channel bus and 89.6 GB/s bandwidth. PCIe support also differs: the EPYC offers Gen 4 with 128 lanes, while the Ryzen offers Gen 5 with 24 lanes. The Ryzen includes integrated Radeon Graphics; the EPYC has no integrated graphics listed.

Architecture Differences

The EPYC 7443P is built on the Zen 3 architecture, codenamed Milan, and belongs to the EPYC 7003 series. It uses a 7 nm process from TSMC and contains 16,600 million transistors across a die size of 4x 81 mm². Its cache configuration includes 64 KB L1 per core, 512 KB L2 per core, and 128 MB shared L3. It was released in 2021 and has a launch MSRP of $1337.

The Ryzen 7 PRO 9755 is built on the Zen 5 architecture, codenamed Granite Ridge, and belongs to the 9000 series. It uses a 4 nm process from TSMC and contains 8,315 million transistors on a single 70.6 mm² die. Its cache configuration includes 80 KB L1 per core, 1 MB L2 per core, and 32 MB shared L3. It has a later release date in 2026. The EPYC’s much larger L3 cache (128 MB vs 32 MB) and higher transistor count are direct results of its server-oriented design.

The Verdict

The recorded data is unambiguous. The AMD EPYC 7443P is the superior processor for multithreaded and memory-bandwidth-intensive workloads. It wins 9 out of 11 benchmarks, with decisive margins in encryption (153.6%), physics (110.4%), and integer math (90%). Its 24 cores, 48 threads, and 204.8 GB/s memory bandwidth make it the choice for server virtualization, database processing, and heavy scientific computing. The 128 MB L3 cache and eight-channel DDR4 support are the key architectural advantages.

The AMD Ryzen 7 PRO 9755 is the better pick for single-threaded performance. Its 36.9% lead in passmark single thread is significant, and its 5.40 GHz boost clock is far above the EPYC’s 4.00 GHz. For workstation users running lightly threaded applications, CAD tools with single-core bottlenecks, or any software that cannot utilize more than a few cores, the Ryzen will feel faster. Its 4 nm process, DDR5 support, and integrated graphics also make it a more modern and power-efficient package.

Choose the EPYC 7443P if your workload is parallel and memory-hungry. Choose the Ryzen 7 PRO 9755 if you need maximum clock speed and single-core responsiveness. The benchmarks show no middle ground; each processor wins exactly where its architecture is strongest.