AMD EPYC 4484PX vs AMD Ryzen 9 7950X Comparison

The AMD Ryzen 9 7950X and AMD EPYC 4484PX present a fascinating study in architectural siblings with divergent design goals. Both are built on the Zen 4 architecture and share the Raphael codename, yet they serve different market segments. The benchmark data reveals a clear split: the Ryzen 9 7950X dominates in throughput-heavy workloads, while the EPYC 4484PX shows surprising strength in single-threaded and specific multi-threaded tests. With 16 cores and 32 threads against the EPYC’s 12 cores and 24 threads, one might expect a straightforward victory for the desktop part, but the EPYC’s larger cache and higher single-core scores complicate the narrative.

Head-to-Head Benchmarks

The Ryzen 9 7950X wins 10 of the 15 head-to-head comparisons, often by substantial margins. The most striking victories come in PassMark’s floating point math and extended instructions tests, where the 7950X leads by 43.1% and 43.4%, respectively. These results indicate a significant advantage in compute-heavy tasks that leverage SIMD and advanced instruction sets. The 7950X also takes data compression by 38.5% and integer math by 38.4%, suggesting a strong overall ALU and memory pipeline advantage. Random string sorting shows a 37.5% lead, while data encryption comes in at 35.2% ahead.

The multi-threaded PassMark score also favors the 7950X, with a 23.6% advantage (62478 vs 50547). This is consistent with the core count difference, but the margin is smaller than the core ratio would suggest. In Cinebench R15 multi-core, the 7950X leads by 37.4% (5947.5 vs 4330), which aligns more closely with the expected scaling. However, the picture flips dramatically in Cinebench R23 multi-core, where the EPYC 4484PX wins by 15% (42964 vs 36523). This is a notable anomaly: the EPYC outperforms the 7950X in a newer multi-threaded benchmark despite having fewer cores and threads.

The EPYC 4484PX also wins the single-threaded contests decisively. In Cinebench R23 single-core, it scores 6065 against the 7950X’s 2000, a 67% advantage. Cinebench R15 single-core shows a 48.4% lead (611 vs 315.5). PassMark physics also goes to the EPYC, with a 37.2% margin (4938 vs 3102). The EPYC’s win in PassMark’s find prime numbers test (20.7% ahead) further underscores its edge in integer-heavy single-threaded workloads. The only single-threaded test the 7950X wins is PassMark single-thread, by a slim 3.6% (4266 vs 4119).

Where Each One Wins

The Ryzen 9 7950X is the clear winner for tasks that scale with core count and demand high sustained throughput. Its victories in data compression, encryption, integer math, and floating point math point to strengths in content creation, scientific computing, and general productivity workloads. The 43.4% lead in extended instructions suggests the 7950X is better optimized for AVX-512 or similar instruction sets, making it suitable for video encoding, 3D rendering, and simulation tasks. Its 23.6% advantage in PassMark multithread reinforces this, indicating a robust multi-core design that handles parallel workloads efficiently.

The EPYC 4484PX, despite its server/workstation designation, shows an unexpected aptitude for single-threaded performance. Its 67% lead in Cinebench R23 single-core is remarkable, and the 48.4% advantage in Cinebench R15 single-core confirms this is not a fluke. The 37.2% win in PassMark physics suggests the EPYC is well-suited for real-time physics simulations and gaming-adjacent workloads, despite its server positioning. The 20.7% lead in find prime numbers indicates strong integer single-thread performance, useful for cryptography and certain financial calculations. The EPYC’s 15% win in Cinebench R23 multi-core is puzzling but suggests that its larger L3 cache (128 MB vs 64 MB) may provide a benefit in certain rendering workloads that are cache-sensitive.

In terms of overall average benchmark scores, the 7950X edges out the EPYC, with an average of 69515 against 67822, a difference of roughly 2.5%. Both CPUs sit in the 94th percentile of all CPUs, indicating they are both top-tier performers. The 7950X’s nearest rival is the Intel Core i7-14700K, with a delta of just 0.2%, while the EPYC’s closest competitor is the AMD Ryzen Threadripper PRO 5955WX, at -0.1%. This shows that while the two CPUs are close in overall performance, they occupy different performance niches.

The Verdict

Based strictly on the data, the choice between these two CPUs hinges on workload type. The Ryzen 9 7950X is the superior choice for users who prioritize multi-threaded throughput across a broad range of applications. Its wins in 10 of 15 benchmarks, including significant margins in math, compression, and encryption, make it the more versatile desktop processor. The 7950X also holds a slight edge in PassMark single-thread (3.6%), meaning it is not far behind in lightly-threaded tasks, despite losing the Cinebench single-core tests by large margins.

The EPYC 4484PX is the better option for users who need exceptional single-threaded performance and can benefit from a massive L3 cache. Its 67% lead in Cinebench R23 single-core and 37.2% lead in PassMark physics are compelling for applications that rely on strong per-core performance, such as legacy software or certain simulation tools. The EPYC’s 15% win in Cinebench R23 multi-core also makes it a viable choice for rendering workloads that favor cache size over raw core count. However, its 5 wins out of 15 comparisons, and its lower average benchmark score, mean it is not the general-purpose champion.

For a desktop user building a high-end workstation, the Ryzen 9 7950X is the rational pick. It offers a 23.6% advantage in PassMark multithread and a 43.1% lead in floating point math, which are critical for productivity and content creation. The EPYC 4484PX, with its server/workstation market segment, is more suited for specialized server deployments where single-threaded latency and cache capacity are paramount. Both CPUs share the AM5 socket and dual-channel DDR5 memory support, but the 7950X has an unlocked multiplier while the EPYC is locked. The data does not support a universal recommendation; it supports a workload-specific one.

FAQ

Q: Which CPU has a higher Cinebench R23 multi-core score?

A: The AMD EPYC 4484PX scores 42964, which is 15% higher than the AMD Ryzen 9 7950X’s 36523.

Q: How do the two CPUs compare in PassMark single-thread performance?

A: The Ryzen 9 7950X wins by a narrow 3.6% margin, scoring 4266 against the EPYC 4484PX’s 4119.

Q: What is the average benchmark score difference between the two?

A: The Ryzen 9 7950X has an average benchmark score of 69515, while the EPYC 4484PX averages 67822, giving the 7950X a lead of roughly 2.5%.

Q: Which CPU has more cores and threads?

A: The Ryzen 9 7950X has 16 cores and 32 threads, while the EPYC 4484PX has 12 cores and 24 threads.

Q: Do both CPUs support ECC memory?

A: Yes, both the Ryzen 9 7950X and the EPYC 4484PX have ECC memory support listed as true.

Q: What is the launch MSRP of each CPU?

A: The Ryzen 9 7950X has a launch MSRP of $699, and the EPYC 4484PX has a launch MSRP of $599.

Architecture Differences

The two CPUs share the same Zen 4 architecture and Raphael codename, but they differ in several key specifications. The Ryzen 9 7950X is built on a 5 nm process with 13,140 million transistors, while the EPYC 4484PX uses the same 5 nm process but packs 17,840 million transistors. Both have a die size of 2x 71 mm², but the EPYC’s higher transistor count is dedicated to a larger cache. The 7950X has 64 MB of shared L3 cache, whereas the EPYC 4484PX boasts 128 MB of shared L3 cache, including a 1x 64MB 3D V-Cache slice. This cache difference is likely a major factor in the EPYC’s superior single-threaded benchmark results.

The core configurations differ significantly: the 7950X has 16 cores and 32 threads, with a base clock of 4.50 GHz and a boost clock of 5.70 GHz. The EPYC 4484PX has 12 cores and 24 threads, with a base clock of 4.40 GHz and a boost clock of 5.60 GHz. The TDP also varies, with the 7950X rated at 170W and the EPYC at 120W. Both CPUs support DDR5 memory on a dual-channel bus with a bandwidth of 83.2 GB/s. The PCIe support differs slightly: the 7950X offers Gen 5 with 24 lanes (CPU only), while the EPYC provides Gen 5 with 28 lanes (CPU only).

Both CPUs are fabricated by TSMC and include integrated Radeon Graphics. The 7950X is a desktop part with an unlocked multiplier, while the EPYC 4484PX is a server/workstation part with a locked multiplier. The 7950X was released on 2022-09-26, and the EPYC followed on 2024-05-20. Both use the AMD Socket AM5, making them physically compatible, but their market segments and feature sets are tailored to different use cases. The EPYC’s larger cache and lower TDP suggest a design optimized for efficiency and cache-sensitive workloads, while the 7950X’s higher core count and clock speeds target raw multi-threaded performance.