AMD EPYC 7552 vs AMD Ryzen Threadripper PRO 3975WX Comparison

The AMD EPYC 7552 and AMD Ryzen Threadripper PRO 3975WX are both 7 nm Zen 2 parts from AMD, yet they serve fundamentally different arenas. One is a 48-core server behemoth built for scale-out workloads, the other a 32-core workstation titan engineered for raw throughput per thread. The benchmark data reveals a surprisingly consistent story: in every single head-to-head test, the Threadripper PRO emerges victorious, despite having fewer cores. This analysis explores what those results mean, where each processor excels, and what the architectural choices reveal about their intended purposes.

Head-to-Head Benchmarks

The head-to-head results are unambiguous. Across all six Cinebench tests, the AMD Ryzen Threadripper PRO 3975WX posts a win, and the margin is identical in every case: a 7.7% advantage over the EPYC 7552. This uniformity is striking. It suggests that the performance gap is not workload-specific but rather a fundamental characteristic of the two chips' operating points.

In Cinebench R23 multi-core, the Threadripper scores 52,895 against the EPYC's 48,801. The delta is 7.7%, meaning the 32-core chip outperforms the 48-core chip by nearly 4,100 points. This is counterintuitive at first glance. The EPYC has 50% more cores, yet it loses. The reason lies in clock speeds, but more on that later. The single-core results tell a similar tale: R23 single-core sees the Threadripper at 7,467 versus the EPYC's 6,889, again a 7.7% gap.

The pattern holds across older Cinebench versions. In R20 multi-core, the score is 22,215 for the Threadripper versus 20,496 for the EPYC. In R15 multi-core, it's 5,331 versus 4,919. The single-core tests in R20 and R15 also show the same 7.7% delta, with the Threadripper leading at 3,136 and 752 respectively, against the EPYC's 2,893 and 694.

What makes this interesting is the consistency. Whether the workload is heavily multi-threaded (R23 multi) or lightly threaded (R15 single), the relative performance difference remains fixed. This implies that the Threadripper's advantage is not due to better scaling across cores, but rather a per-core efficiency edge that translates proportionally to all workloads. The data does not show any test where the EPYC closes the gap, suggesting that its extra 16 cores cannot compensate for the Threadripper's higher operating frequency.

Where Each One Wins

Given that the Threadripper wins all six head-to-head benchmarks, one might conclude the EPYC has no place. However, the data suggests a more nuanced picture. The EPYC 7552's advantage is not in peak performance but in scale and density. It offers 48 cores and 96 threads, which the Threadripper cannot match. In hypothetical scenarios where a workload scales perfectly with core count beyond 32 cores, the EPYC's additional 16 cores would provide a raw throughput advantage that the benchmark suite here does not capture.

The Threadripper PRO 3975WX wins every benchmark listed, from single-core to multi-core. This makes it the clear choice for applications that are latency-sensitive or where per-thread performance is paramount. Its 3.50 GHz base and 4.20 GHz boost clocks are significantly higher than the EPYC's 2.20 GHz and 3.30 GHz. This explains why it wins even multi-core tests: the clock speed advantage is so substantial that it overcomes the 16-core deficit.

Conversely, the EPYC's domain is the server room. Its lower TDP of 200 watts, versus the Threadripper's 280 watts, makes it more suitable for dense, power-constrained environments. The EPYC also launched in August 2019, while the Threadripper arrived in July 2020, giving the server chip a time-to-market advantage. For workloads that are memory-bandwidth-bound, both chips offer identical eight-channel DDR4 support and 204.8 GB/s bandwidth, so there is no differentiator there.

The win count is 6-0 in favor of the Threadripper, but that is a narrow view. The EPYC wins on core count, thread count, and TDP. For a virtualized server running many small VMs, the EPYC's 48 cores are more valuable than the Threadripper's clock speed. The data cannot show this directly, but the specification differences imply it.

Architecture Differences

Both processors are built on the same Zen 2 architecture, manufactured by TSMC on a 7 nm process. The core design is identical, but the packaging and configuration diverge significantly. The EPYC 7552, codenamed Rome, uses a chiplet design with a die size of 74 mm² and 3,800 million transistors. The Threadripper PRO 3975WX, codenamed Castle Peak, uses four of those same 74 mm² chiplets, totaling 15,200 million transistors.

This difference in chiplet count explains the memory and PCIe configurations. Both support eight-channel DDR4 memory and offer 128 PCIe Gen 4 lanes from the CPU. However, the Threadripper's four-chiplet design allows it to reach higher clock speeds, likely due to better thermal characteristics or binning. The EPYC, with a single 74 mm² chiplet, is more conservative in its clock speeds to stay within its 200 W TDP.

Cache configurations also differ. The EPYC has a massive 192 MB of shared L3 cache, while the Threadripper has 128 MB. The L1 cache is smaller on the Threadripper (64 KB per core versus 96 KB per core), but L2 is identical at 512 KB per core. The larger L3 on the EPYC is a server-oriented feature, designed to hold larger working sets for database and virtualization workloads.

The sockets are incompatible: SP3 for the EPYC and WRX8 for the Threadripper. This means platform choice is locked in from the start. The EPYC targets dual-socket or single-socket servers, while the Threadripper PRO targets single-socket workstations. Both lack integrated graphics and have locked multipliers, reinforcing their non-enthusiast positioning.

FAQ

Q: Which processor has more cores?

A: The AMD EPYC 7552 has 48 cores and 96 threads, while the AMD Ryzen Threadripper PRO 3975WX has 32 cores and 64 threads.

Q: Why does the 32-core Threadripper beat the 48-core EPYC in multi-core tests?

A: The Threadripper PRO 3975WX has a base clock of 3.50 GHz and a boost clock of 4.20 GHz, versus 2.20 GHz and 3.30 GHz for the EPYC 7552. This clock advantage offsets the core deficit, resulting in a 7.7% lead in all Cinebench multi-core tests.

Q: Do they use the same memory architecture?

A: Yes, both support DDR4 memory with an eight-channel bus and 204.8 GB/s of bandwidth, and both support ECC memory.

Q: What is the TDP difference?

A: The EPYC 7552 has a TDP of 200 watts, while the Threadripper PRO 3975WX has a higher TDP of 280 watts.

Q: Are they on the same process node?

A: Yes, both are manufactured by TSMC on a 7 nm process using the Zen 2 architecture.

Q: What is the L3 cache difference?

A: The EPYC 7552 features 192 MB of shared L3 cache, whereas the Threadripper PRO 3975WX offers 128 MB.

Specification Differences

| Specification | AMD EPYC 7552 | AMD Ryzen Threadripper PRO 3975WX |

|----------------|----------------|-----------------------------------|

| Cores | 48 | 32 |

| Threads | 96 | 64 |

| Base Clock | 2.20 GHz | 3.50 GHz |

| Boost Clock | 3.30 GHz | 4.20 GHz |

| TDP | 200 W | 280 W |

| Socket | AMD Socket SP3 | AMD Socket WRX8 |

| Codename | Rome | Castle Peak |

| Transistors | 3,800 million | 15,200 million |

| Die Size | 74 mm² | 4x 74 mm² |

| L1 Cache | 96 KB (per core) | 64 KB (per core) |

| L3 Cache | 192 MB (shared) | 128 MB |

| Release Date | 2019-08-06 | 2020-07-13 |

| Launch MSRP | $4025 | $2749 |

| Market Segment | Server/Workstation | Desktop |

| Part Number | 100-000000076 | 100-000000086100-100000086WOF |

The Verdict

The data points to a clear conclusion for raw performance: the AMD Ryzen Threadripper PRO 3975WX is the faster processor in every benchmark measured. Its 7.7% lead across all Cinebench tests, from single-core to multi-core, makes it the superior choice for any workload where clock speed translates to results. For a workstation user running rendering, simulation, or code compilation, the Threadripper's higher frequencies will deliver faster completion times.

The AMD EPYC 7552, however, should not be dismissed. Its 48 cores and 96 threads provide a parallel processing capability that the Threadripper cannot match, and its lower 200 W TDP makes it more efficient per watt for dense server deployments. The EPYC also offers more L3 cache (192 MB versus 128 MB), which can benefit certain server-side workloads like large in-memory databases.

The choice hinges on the use case. For a desktop workstation where a single operator needs maximum responsiveness and throughput, the Threadripper PRO 3975WX is the data-backed winner. For a server environment where many virtual machines or containers run concurrently, the EPYC's additional cores and lower power draw are more compelling, despite its lower benchmark scores. The launch MSRP of $4025 for the EPYC versus $2749 for the Threadripper also indicates that the server platform carries a premium, but the benchmark results show the Threadripper offers better performance per dollar in single-socket scenarios. Ultimately, the verdict is not about which is "better" but which fits the intended infrastructure. The data says the Threadripper is faster; the specifications say the EPYC is more scalable and power-efficient.