AMD EPYC 4465P vs AMD EPYC 7343 Comparison

Head-to-Head Benchmarks

The benchmark data reveals a clear overall winner in the AMD EPYC 4465P, which takes 13 of the 17 recorded tests, while the AMD EPYC 7343 secures 4 wins. The most dramatic difference appears in the PassMark single-thread test, where the EPYC 4465P scores 4575 against the EPYC 7343's 2740, a 67% advantage. This is the largest delta in the entire comparison and underscores how far the newer Zen 5 architecture has pushed per-core performance. The same 67% gap recurs in the duplicate PassMark singlethread entry, confirming the consistency of the measurement.

Cinebench results show a uniform pattern across all six tests. The EPYC 4465P leads by 15.7% in every Cinebench R15, R20, and R23 benchmark, both single-core and multi-core. In R23 multi-core, the scores are 42918 for the EPYC 4465P versus 37097 for the EPYC 7343. Single-core R23 shows 6059 against 5237. The identical delta of 15.7% across all Cinebench variants suggests a consistent architectural efficiency gain rather than a workload-specific advantage.

PassMark floating-point math heavily favors the EPYC 4465P, scoring 105833 versus 86311, a 22.6% lead. Extended instructions also go to the newer chip, with 42867 against 35626, a 20.3% margin. Integer math shows an 11.9% advantage for the EPYC 4465P, scoring 174551 versus 156033. The multi-thread PassMark test gives the EPYC 4465P a 14.3% edge, with 49871 against 43644. Random string sorting is essentially a tie: 67597 versus 67576, a 0% delta that rounds to a technical win for the EPYC 4465P.

The EPYC 7343's wins are concentrated in specific workloads. PassMark physics shows a 23.6% advantage for the older chip, scoring 4774 versus 3647. Data encryption favors the EPYC 7343 by 14.1%, with 37454 against 32184. Data compression gives the EPYC 7343 a narrower 2.1% edge, 589770 versus 577210. Find prime numbers also goes to the EPYC 7343, 382 versus 338, an 11.5% margin. These wins suggest that the EPYC 7343 retains strengths in certain integer-heavy and cryptographic tasks despite its older architecture.

Where Each One Wins

The EPYC 4465P dominates general-purpose computing workloads. Its 67% single-thread lead makes it the clear choice for latency-sensitive tasks, lightly threaded applications, and any environment where per-core responsiveness matters. The consistent 15.7% Cinebench advantage across all versions indicates superior rendering performance in both single-threaded and multi-threaded content creation. The 22.6% floating-point math win points to advantages in scientific computing, simulation, and any workload relying on FPU throughput. Extended instructions at 20.3% ahead suggest better support for modern instruction sets and vectorized code.

The EPYC 7343 wins in four specific areas that hint at its server heritage. The 23.6% physics advantage may reflect better scheduling or cache behavior for certain simulation workloads. Data encryption at 14.1% ahead is notable for security-focused deployments, database encryption, VPN termination, and TLS processing. Data compression, while only 2.1% ahead, still favors the EPYC 7343 for storage and archiving tasks. Prime number finding, an 11.5% win, points to advantages in cryptography key generation and certain mathematical algorithms.

The overall average benchmark score tells the broader story: the EPYC 4465P averages 66925 across all tests, while the EPYC 7343 averages 64202. Both sit at the 93rd percentile among all CPUs in the database, placing them in the top tier. The EPYC 4465P's nearest rival is the Intel Xeon 6515P at 67006, a 0.1% difference, while the EPYC 7343's nearest rival is the Intel Core i9-13900KS at 64051, a 0.2% gap. These figures show that both processors compete at the high end, but the EPYC 4465P has a roughly 4.2% higher average score.

Architecture Differences

The two processors come from different generations and design philosophies. The EPYC 4465P uses AMD's Zen 5 architecture, codenamed Grado, built on a 4 nm process at TSMC. The EPYC 7343 uses Zen 3, codenamed Milan, on a 7 nm process. The transistor counts are nearly identical, with the EPYC 4465P at 16,630 million and the EPYC 7343 at 16,600 million, but the die layouts differ substantially. The EPYC 4465P uses 2x 70.6 mm² dies, while the EPYC 7343 uses 4x 81 mm² dies.

Core counts favor the EPYC 7343, which has 16 cores and 32 threads against the EPYC 4465P's 12 cores and 24 threads. Despite fewer cores, the EPYC 4465P achieves higher performance in most tests due to its much higher clock speeds. The EPYC 4465P boosts to 5.40 GHz with a 3.40 GHz base, while the EPYC 7343 boosts to 3.90 GHz with a 3.20 GHz base. This 1.50 GHz boost clock difference explains the massive single-thread gap.

Cache hierarchies differ significantly. The EPYC 4465P has 80 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3. The EPYC 7343 has 64 KB L1 per core, 512 KB L2 per core, and 128 MB shared L3. The EPYC 7343's larger L3 cache, double the shared capacity, helps explain its wins in data-heavy tasks like compression and encryption. The EPYC 4465P's larger per-core L1 and L2 caches support its single-thread superiority.

Memory architecture diverges sharply. The EPYC 4465P supports DDR5 on a dual-channel bus with 89.6 GB/s bandwidth. The EPYC 7343 supports DDR4 on an eight-channel bus with 204.8 GB/s bandwidth. The EPYC 7343's memory bandwidth is more than double, a critical factor for server workloads that stream large datasets. PCIe also differs: the EPYC 4465P provides Gen 5 with 24 CPU lanes, while the EPYC 7343 provides Gen 4 with 128 lanes. The EPYC 7343 offers far more expansion capacity, while the EPYC 4465P offers faster per-lane throughput.

Power characteristics set them apart. The EPYC 4465P has a 65 W TDP, remarkably low for a server processor. The EPYC 7343 has a 190 W TDP, nearly three times higher. This difference carries implications for cooling, power delivery, and operating costs. The EPYC 4465P also includes integrated Radeon Graphics, while the EPYC 7343 has none. Socket compatibility differs as well: the EPYC 4465P uses AMD Socket AM5, while the EPYC 7343 uses AMD Socket SP3.

FAQ

Q: Which processor has a higher single-thread performance?

A: The AMD EPYC 4465P leads decisively. In PassMark single-thread, it scores 4575 versus 2740 for the EPYC 7343, a 67% advantage. Cinebench R23 single-core shows 6059 versus 5237, a 15.7% lead.

Q: Why does the EPYC 7343 win in data encryption?

A: The EPYC 7343 scores 37454 in PassMark data encryption against 32184 for the EPYC 4465P, a 14.1% advantage. This likely stems from its 128 MB shared L3 cache and 204.8 GB/s memory bandwidth, which help with cryptographic workloads that process large data blocks.

Q: How do the core counts compare?

A: The EPYC 7343 has 16 cores and 32 threads, while the EPYC 4465P has 12 cores and 24 threads. Despite having 4 fewer cores, the EPYC 4465P wins most multi-threaded benchmarks due to its higher clock speeds and newer architecture.

Q: What is the memory bandwidth difference?

A: The EPYC 7343 provides 204.8 GB/s over an eight-channel DDR4 bus. The EPYC 4465P provides 89.6 GB/s over a dual-channel DDR5 bus. The EPYC 7343 has more than double the memory bandwidth.

Q: Which processor is more power-efficient?

A: The EPYC 4465P has a 65 W TDP, while the EPYC 7343 has a 190 W TDP. The EPYC 4465P delivers higher performance in most tests while drawing far less power, indicating significantly better performance-per-watt.

Q: Do both processors support ECC memory?

A: Yes, both the EPYC 4465P and EPYC 7343 support ECC memory. The EPYC 4465P uses DDR5 ECC, while the EPYC 7343 uses DDR4 ECC.

Specification Differences

| Specification | AMD EPYC 4465P | AMD EPYC 7343 |

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

| Cores | 12 | 16 |

| Threads | 24 | 32 |

| Base Clock | 3.40 GHz | 3.20 GHz |

| Boost Clock | 5.40 GHz | 3.90 GHz |

| TDP | 65 W | 190 W |

| Socket | AMD Socket AM5 | AMD Socket SP3 |

| Architecture | Zen 5 | Zen 3 |

| Codename | Grado | Milan |

| Process Node | 4 nm | 7 nm |

| Die Size | 2x 70.6 mm² | 4x 81 mm² |

| L1 Cache | 80 KB per core | 64 KB per core |

| L2 Cache | 1 MB per core | 512 KB per core |

| L3 Cache | 64 MB shared | 128 MB shared |

| Memory Support | DDR5 | DDR4 |

| Memory Bus | Dual-channel | Eight-channel |

| Memory Bandwidth | 89.6 GB/s | 204.8 GB/s |

| PCIe | Gen 5, 24 Lanes | Gen 4, 128 Lanes |

| Integrated Graphics | Radeon Graphics | None |

| Release Date | 2025-05-12 | 2021-03-14 |

| Launch MSRP | $399 | $1565 |

The Verdict

The data points to the AMD EPYC 4465P as the superior processor for most users. It wins 13 of 17 benchmarks, including every Cinebench test, all major PassMark math tests, and the critical single-thread measurements. Its 67% single-thread advantage is transformative for responsiveness, and its 15.7% multi-thread Cinebench lead proves that architectural efficiency can overcome a 4-core deficit. The 65 W TDP, versus 190 W, makes it dramatically easier to cool and power. Its launch MSRP of $399 stands in contrast to the EPYC 7343's $1565, though price comparisons should be weighed against the full feature set.

The EPYC 7343 retains a role for specific workloads. Its 128 MB L3 cache and 204.8 GB/s memory bandwidth give it clear advantages in data compression, encryption, and physics simulations. The 128 PCIe Gen 4 lanes provide far more expansion capability for storage arrays, GPUs, and networking cards. For existing SP3 platforms, it offers an upgrade path without changing motherboards. Servers that prioritize memory throughput, cryptographic processing, or massive I/O expansion may still prefer the EPYC 7343.

For general server workloads, virtualization, application hosting, and single-thread-sensitive tasks, the EPYC 4465P is the data-backed choice. Its higher average benchmark score of 66925 versus 64202, combined with superior efficiency and modern DDR5 support, makes it the more future-proof option. The 93rd percentile ranking for both processors confirms that either will perform at a high level, but the EPYC 4465P delivers more performance in more areas while consuming less power. Users with workloads matching the EPYC 7343's four winning categories should consider it, but the broader benchmark picture favors the EPYC 4465P.