AMD EPYC 4464P vs AMD EPYC 4484PX Comparison

Head-to-Head Benchmarks

The benchmark data reveals a clear, but not absolute, advantage for the AMD EPYC 4484PX. Across the recorded tests, the 4484PX secures 15 wins, while the 4464P takes only 2. The most striking margin comes in the PassMark physics test, where the 4484PX scores 4938 against 2873 for the 4464P, a delta of 71.9%. This is the single largest performance gap in the entire comparison, suggesting a substantial difference in workloads that rely on physics calculations.

The Cinebench suite shows a consistent pattern. In Cinebench R15, R20, and R23, both multi-core and single-core tests, the 4484PX leads by a uniform 6.8%. For example, in Cinebench R23 multi-core, the 4484PX scores 42964, while the 4464P scores 40215. Similarly, in Cinebench R23 single-core, the scores are 6065 and 5677, respectively. This uniform delta indicates a fundamental clock-speed advantage rather than a core-count difference, since both processors share the same 12-core, 24-thread configuration.

The PassMark suite offers a more nuanced picture. The 4484PX wins data compression (603371 vs 574304, 5.1% delta), data encryption (36499 vs 35816, 1.9% delta), extended instructions (43315 vs 39359, 10.1% delta), and find prime numbers (425 vs 343, 23.9% delta). The floating-point math test shows a smaller gap, with the 4484PX at 96446 versus 93090, a 3.6% delta. Integer math is closer still, with a 1.6% delta (162993 vs 160410). The multithread test favors the 4484PX by 6.4% (50547 vs 47514), and random string sorting shows a modest 2.1% delta in its favor (71642 vs 70200).

The single exception to the 4484PX dominance is the PassMark single-thread test, where the 4464P edges ahead with a score of 4146 versus 4119, a -0.7% delta. This result is intriguing, as it contradicts the Cinebench single-core results where the 4484PX leads by 6.8%. The data implies that the 4464P has a slight advantage in this specific PassMark workload, possibly due to different turbo behavior under short, single-threaded bursts. The two processors record identical single-thread and singlethread scores, 4146 and 4119 respectively, confirming the 4464P's narrow win in this category.

Overall, the head-to-head data shows the 4484PX as the stronger performer in nearly every metric, with the largest gaps in physics and prime-number finding, and the smallest in integer math and data encryption.

Where Each One Wins

The performance split suggests clear use-case delineations. The 4484PX is the winner for compute-intensive, multi-faceted workloads. Its 71.9% lead in PassMark physics makes it the obvious choice for simulation, scientific computing, or any task that models physical systems. The 23.9% delta in find prime numbers points to an advantage in cryptography or number-theoretic calculations. The 10.1% lead in extended instructions (such as AVX-512 style workloads) and the 6.8% lead across all Cinebench tests further cement its position for rendering, video encoding, and general productivity.

The 4464P, despite losing most tests, has a niche. Its -0.7% win in PassMark single-thread suggests it can be slightly better for legacy single-threaded applications that rely on that specific test's methodology. However, the Cinebench single-core results contradict this, showing the 4484PX ahead by 6.8%. Therefore, the 4464P's single-thread win is isolated to one benchmark, not a broad trend. The 4464P also trails in data encryption by only 1.9%, making it nearly equivalent for encrypted I/O or secure communication workloads. For integer math, the delta is just 1.6%, so for general database or compiler workloads, the difference is minor.

In summary, the 4484PX wins for heavy multi-threaded, scientific, and cryptographic tasks. The 4464P is not a winner in any broad category, but it is competitive in light integer and encryption work, and it holds a single-test victory in one PassMark single-thread scenario.

Architecture Differences

Both processors belong to the EPYC 4004 series and share the same Zen 4 architecture with the Raphael codename. They are built on a 5 nm process at TSMC, and both use the AMD Socket AM5. Both have 12 cores and 24 threads, with per-core L1 cache of 64 KB and per-core L2 cache of 1 MB. The critical architectural divergence lies in the L3 cache and the 3D V-Cache implementation. The 4484PX features 128 MB of shared L3 cache, augmented by a 1x 64 MB slice of 3D V-Cache. The 4464P has only 64 MB of shared L3 cache and no 3D V-Cache. This doubling of L3 cache, plus the V-Cache slice, explains the 4484PX's superior performance in benchmarks that are latency-sensitive or have large working sets, such as the PassMark physics test and find prime numbers.

The transistor count also differs significantly. The 4484PX contains 17,840 million transistors, while the 4464P has 13,140 million. This is a 35.8% difference in transistor count, directly attributable to the larger L3 cache and the V-Cache hardware. The die size is identical at 2x 71 mm², meaning the extra transistors are packed into the same silicon area, likely through the additional V-Cache die. The base clock and boost clock also differ: the 4484PX runs at 4.40 GHz base and 5.60 GHz boost, while the 4464P runs at 3.70 GHz base and 5.40 GHz boost. This clock advantage, combined with the larger cache, drives the consistent Cinebench deltas.

The TDP is a major architectural difference as well. The 4484PX has a TDP of 120 watts, while the 4464P has a TDP of 65 watts. This nearly two-fold TDP difference allows the 4484PX to sustain higher clocks under load, contributing to its multi-core wins. The memory support is identical: both use DDR5 with a dual-channel bus and 83.2 GB/s bandwidth. Both support ECC memory, and both have the same PCIe Gen 5 configuration with 28 CPU lanes. Integrated Radeon Graphics are present in both.

Specification Differences

| Specification | AMD EPYC 4484PX | AMD EPYC 4464P |

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

| Base Clock | 4.40 GHz | 3.70 GHz |

| Boost Clock | 5.60 GHz | 5.40 GHz |

| TDP | 120 W | 65 W |

| Transistors | 17,840 million | 13,140 million |

| L3 Cache | 128 MB (shared) | 64 MB (shared) |

| 3D V-Cache | 1x 64 MB Slice | None |

| Launch MSRP | $599 | $429 |

All other fields, including cores, threads, L1/L2 cache, socket, architecture, process node, foundry, die size, memory support, PCIe lanes, integrated graphics, market segment, production status, and release date, are identical. The 4484PX has a higher launch MSRP of $599, while the 4464P has a launch MSRP of $429. Both are unlocked multipliers, meaning they cannot be overclocked via multiplier changes.

FAQ

Q: Which processor has the higher clock speeds?

A: The AMD EPYC 4484PX has a base clock of 4.40 GHz and a boost clock of 5.60 GHz, while the AMD EPYC 4464P has a base clock of 3.70 GHz and a boost clock of 5.40 GHz.

Q: How much L3 cache does each processor have?

A: The 4484PX has 128 MB of shared L3 cache plus a 1x 64 MB 3D V-Cache slice. The 4464P has 64 MB of shared L3 cache and no 3D V-Cache.

Q: What is the largest performance gap between the two in any benchmark?

A: The largest delta is in the PassMark physics test, where the 4484PX scores 4938 against 2873 for the 4464P, a difference of 71.9%.

Q: Is there any test where the 4464P wins?

A: Yes, in the PassMark single-thread test, the 4464P scores 4146 versus 4119 for the 4484PX, a delta of -0.7%.

Q: Do both processors support ECC memory?

A: Yes, both the 4484PX and the 4464P have ECC memory support set to true.

Q: What are the TDP values for each?

A: The 4484PX has a TDP of 120 watts, while the 4464P has a TDP of 65 watts.

The Verdict

The data points to the AMD EPYC 4484PX as the superior processor for nearly all workloads. Its 15 benchmark wins out of 17, combined with its 71.9% lead in physics, 23.9% lead in prime numbers, and 10.1% lead in extended instructions, make it the clear choice for scientific simulation, cryptographic analysis, and heavy multi-threaded rendering. The 4484PX also maintains a consistent 6.8% advantage across all Cinebench tests, indicating a broad performance uplift in both single and multi-threaded productivity tasks. Its larger L3 cache and 3D V-Cache provide a tangible benefit for latency-sensitive applications, and its higher clocks (4.40 GHz base, 5.60 GHz boost) ensure it stays ahead under sustained load.

The AMD EPYC 4464P is the choice only for scenarios where the 65-watt TDP is an absolute constraint, or where the small single-thread win in PassMark matters. Its 1.9% delta in data encryption and 1.6% delta in integer math show it is nearly equivalent for light encryption or integer-heavy database work. However, its 2.1% delta in random string sorting and 3.6% delta in floating-point math still favor the 4484PX. The 4464P is not a performance leader in any meaningful category; it is a lower-power alternative with a modest 5.1% deficit in data compression and a 6.4% deficit in multithread performance.

For users who need maximum compute throughput, the 4484PX is the only rational pick based on the recorded data. For users prioritizing power efficiency above all else, the 4464P offers a 65-watt TDP and still delivers 93rd percentile performance, versus the 94th percentile for the 4484PX. The 4484PX is the benchmark champion, while the 4464P is the efficiency-focused fallback. The launch MSRP difference ($599 vs $429) reflects this performance hierarchy, but the data shows the 4484PX's advantages are worth the premium for compute-heavy tasks.