AMD EPYC 4345P

The AMD EPYC 4345P is an 8-core, 16-thread server processor built on the Zen 5 architecture (codename Grado) for the AMD Socket AM5 platform. It operates at a base clock of 3.80 GHz and a boost clock of 5.50 GHz, with a 65 W TDP. Its average benchmark score of 49595 places it in the 93rd percentile of all CPUs, with a launch MSRP of $329. This processor targets the Server/Workstation market segment and remains in active production as of its release on 2025-05-12.

Benchmark Performance

The aggregate benchmark data places the EPYC 4345P in a tightly contested performance bracket. Its average benchmark score of 49595 sits just 0.5% above the Intel Core i5-14600KF (49367) and 0.9% above the Intel Core i5-14600K (49166). Conversely, the AMD Ryzen 9 7900 holds a 1% advantage (50097), while the EPYC leads the AMD Ryzen 9 5950X by 1.1% (49062). In Cinebench R23, the processor achieves a multi-core score of 32020 and a single-core score of 4520. The R20 results show 13448 multi-core and 1898 single-core, while R15 yields 3227 multi-core and 455 single-core. Passmark tests reveal a strong integer math score of 124180 and floating-point math of 78059. Data compression hits 430813, encryption reaches 22820, and extended instructions score 33544. The physics workload scores 2480, random string sorting 48448, and prime number finding 194. The multithread Passmark score is 37671, with a single-thread score of 4672. These figures indicate a processor that punches well above its core count, with the 93rd percentile ranking confirming its position among the top tier of desktop and workstation parts.

Who Should Consider It

The workload profile of the EPYC 4345P is defined by its exceptional single-thread performance (4520 in Cinebench R23 SC, 4672 in Passmark single-thread) paired with robust multi-thread scaling (32020 in R23 MC). For server and workstation users, the high single-thread scores translate directly to faster database queries, web server responses, and single-threaded application logic. The Passmark data encryption score of 22820 and data compression score of 430813 make it a strong candidate for storage servers, backup appliances, and security workloads requiring fast cryptographic operations. The floating-point math score of 78059 and extended instructions score of 33544 support scientific computing and financial modeling. For content creation, the multi-core R23 score of 32020 ensures capable 3D rendering and video encoding, while the 8-core, 16-thread configuration provides ample parallelism for compilation and batch processing. The presence of integrated Radeon Graphics means basic display output is available without a discrete GPU, which is valuable for headless servers or light workstation duties. The 65 W TDP also makes it suitable for dense 1U servers and compact workstations where thermal and power constraints are tight.

How It Compares

vs. Intel Core i5-14600KF: The EPYC 4345P edges out the i5-14600KF by 0.5% in average benchmark score (49595 vs 49367). This is a statistical dead heat, but the EPYC brings ECC memory support and a server-focused feature set that the consumer i5 lacks, despite the i5's comparable aggregate performance.

vs. Intel Core i5-14600K: The lead extends slightly to 0.9% over the i5-14600K (49595 vs 49166). The EPYC's 5.50 GHz boost clock and Zen 5 architecture deliver superior single-thread performance in Cinebench R23 (4520), making it the better choice for latency-sensitive server tasks, even though the overall average scores are closely matched.

vs. AMD Ryzen 9 7900: The Ryzen 9 7900 holds a 1% lead in average score (50097 vs 49595). The 7900's higher core count likely drives its multi-thread advantage, but the EPYC 4345P counters with a 93rd percentile single-thread ranking and a lower 65 W TDP, which is a critical factor in power-constrained environments.

vs. AMD Ryzen 9 5950X: The EPYC 4345P is 1.1% ahead of the Ryzen 9 5950X (49595 vs 49062). This is a notable result, as the 5950X is a high-core-count flagship from a previous generation. The newer Zen 5 architecture and higher boost clock allow the 8-core EPYC to outperform the 16-core 5950X in aggregate benchmarks, highlighting the efficiency gains of the 4nm process.

FAQ

Q: What is the launch MSRP of the AMD EPYC 4345P?

A: The launch MSRP is $329.

Q: Does the EPYC 4345P support ECC memory?

A: Yes, ECC memory support is listed as true.

Q: What socket does the EPYC 4345P use?

A: It uses the AMD Socket AM5.

Q: What is the boost clock speed of this processor?

A: The boost clock is 5.50 GHz, with a base clock of 3.80 GHz.

Q: How many PCIe lanes does it provide?

A: It provides 24 lanes of PCIe Gen 5 (CPU only).

Q: Is the multiplier unlocked for overclocking?

A: No, the multiplier is locked (multiplierUnlocked is false).

Power and Thermals

The EPYC 4345P is rated at a 65 W TDP, which is remarkably low for a processor with a 5.50 GHz boost clock. This thermal design power implies that a modest air cooler or a low-profile server heatsink is entirely sufficient to maintain operating temperatures. The efficiency stems from the 4nm TSMC manufacturing process, which packs 8,315 million transistors into a 70.6 mm² die. This high transistor density on a small die allows for the high clock speeds without a corresponding increase in power draw. For server deployments,