AMD EPYC 4345P vs Intel Core 9 273PE Comparison

Head-to-Head Benchmarks

The benchmark data shows a clear split between these two processors. The AMD EPYC 4345P wins the majority of the head-to-head tests, taking 12 of the 17 recorded comparisons, while the Intel Core 9 273PE secures 5 wins. However, the margins in each direction tell a more nuanced story.

Starting with the Cinebench suite, the AMD EPYC 4345P edges out the Intel part in every single test, but the margins are remarkably consistent and narrow. In Cinebench R15 multicore, the EPYC scores 3227 against Intel's 3153, a 2.3% advantage. The same 2.3% delta appears in Cinebench R20 multicore (13448 vs 13140) and Cinebench R23 multicore (32020 vs 31288). Single-core results follow the same pattern: the EPYC leads by 2.2% in R15 (455 vs 445) and by 2.3% in both R20 (1898 vs 1855) and R23 (4520 vs 4417). These are consistent but small margins, suggesting the EPYC's higher boost clock of 5.50 GHz versus Intel's 5.70 GHz is not the deciding factor; rather, the per-core efficiency of Zen 5 appears to carry the day.

The Passmark suite reveals a different story. The AMD EPYC 4345P dominates in data compression (421490 vs 405885, a 3.7% lead), data encryption (23313 vs 22719, 2.5% lead), and random string sorting (46238 vs 45098, 2.5% lead). The most dramatic AMD win comes in extended instructions, where the EPYC scores 31663 versus Intel's 24630, a massive 22.2% advantage. This suggests the Zen 5 architecture has a substantial edge in SIMD or specialized workloads.

The Intel Core 9 273PE fights back with decisive wins in several math-heavy tests. Floating point math is the most lopsided result: Intel scores 107884 against AMD's 74255, a 45.3% lead. That is a crushing difference and points to Intel's wider AVX-512 or floating-point pipelines being better suited to this workload. Integer math also favors Intel, 139410 to 123774, a 12.6% lead. The find prime numbers test shows a 21.6% win for Intel (203 vs 167), and the physics test shows a 20.8% lead (3120 vs 2583). In Passmark's multithread score, Intel narrowly wins 36810 to 36123, a 1.9% margin that suggests the 12-core/24-thread Intel part can keep up with the 8-core/16-thread EPYC in general parallel throughput.

The single-thread Passmark test is a different story: the EPYC 4345P scores 4408 versus Intel's 3650, a 17.2% advantage. This is the second-largest delta in either direction and indicates the EPYC has a far stronger per-thread performance profile in this particular benchmark, despite the nearly identical Cinebench single-core results.

In summary, the AMD EPYC 4345P is the consistent winner across most tests, but its margins are often slim (2-4%). The Intel Core 9 273PE wins fewer tests but with larger deltas, particularly in floating point math and physics. The data suggests these are not equivalent CPUs; they have distinct strengths.

FAQ

Q: Which CPU has the higher average benchmark score?

A: The Intel Core 9 273PE has an average benchmark score of 49845, while the AMD EPYC 4345P scores 48470. The Intel part is 2.8% higher on average, despite losing most head-to-head tests.

Q: How does the Intel Core 9 273PE compare to its nearest rival?

A: The Intel part sits 0.1% ahead of the AMD Ryzen AI Max+ 388 (49796), 0.9% ahead of the Intel Core i5-14600KF (49394), and 1.1% behind the Intel Core i9-13980HX (50398). It is 1.2% behind the AMD Ryzen AI 9 HX PRO 370 (50448).

Q: What does the AMD EPYC 4345P's benchmark percentile mean?

A: The EPYC 4345P is at the 90th percentile of all CPUs in the database. This places it in the top 10% of all processors, matching the Intel Core 9 273PE which is also at the 90th percentile.

Q: How does the EPYC 4345P's score compare to the Intel Core i5-14600K?

A: The EPYC 4345P averages 48470, which is 0.3% lower than the Intel Core i5-14600K's 48618. The EPYC is 0.4% above the Intel Core Ultra 5 245HX and 0.5% below the Intel Xeon Gold 5318H.

Q: Which CPU has the higher boost clock?

A: The Intel Core 9 273PE has a boost clock of 5.70 GHz, while the AMD EPYC 4345P boosts to 5.5 GHz. The Intel part has a 0.2 GHz higher maximum frequency.

Q: Which CPU has more cores?

A: The Intel Core 9 273PE has 12 cores and 24 threads, while the AMD EPYC 4345P has 8 cores and 16 threads. The Intel part has 4 more physical cores and 8 more threads.

Architecture Differences

The two processors are built on fundamentally different architectural approaches. The Intel Core 5 273PE uses the Bartlett Lake codename, fabricated on Intel's 10 nm process node at Intel's own foundry. The AMD EPYC 4345P uses the Zen 5 architecture, codenamed Grado, manufactured by TSMC on a 4 nm node. This process difference is significant: 4 nm is a more modern node, which helps explain the AMD part's higher efficiency despite its lower core count.

The Intel part has 12 cores and 24 threads, while the AMD EPYC 4345P has 8 cores and 16 threads. Both use a per-core L1 cache of 80 KB, but the L2 cache differs: Intel uses 2 MB per core, while AMD uses 1 MB per core. The L3 cache is also different: Intel has 36 MB shared, AMD has 32 MB shared. The AMD EPYC's smaller L2 is compensated by the Zen 5 architecture's design, which uses a different cache hierarchy.

The processes are both fabricated by different foundries: Intel uses its own fab, while AMD uses TSMC. The AMD EPYC 4345P has 8,315 million transistors on a 70.6 mm² die, while the Intel part's transistor count and die size are not recorded in the database. The Intel part has a 2.3 GHz base clock, while the AMD EPYC has a 3.8 GHz base clock, a 1.5 GHz difference.

Memory support differs: the Intel Core 9 273PE supports both DDR4 and DDR5, while the AMD EPYC 4345P only supports DDR5. Both have dual-channel memory buses and the same recorded memory bandwidth of 89.6 GB/s. Both support ECC memory. PCIe lanes differ: Intel has Gen 5 with 16 CPU lanes, AMD has Gen 5 with 24 CPU lanes. The Intel part has an integrated UHD 730 Graphics, while the AMD EPYC has Radeon Graphics.

Specification Differences

The key differences in specifications are:

• Cores and Threads: Intel has 12 cores, 24 threads; AMD has 8 cores, 16 threads.
• Base Clock: Intel is 2.30 GHz; AMD is 3.80 GHz.
• Boost Clock: Intel is 5.70 GHz; AMD is 5.50 GHz.
• Process Node: Intel is 10 nm; AMD is 4 nm.
• Foundry: Intel uses Intel; AMD uses TSMC.
• Transistor Count: Intel has no recorded count; AMD has 8,315 million.
• Die Size: Intel has no recorded size; AMD has 70.6 mm².
• L2 Cache: Intel has 2 MB per core; AMD has 1 MB per core.
• L3 Cache: Intel has 36 MB shared; AMD has 32 MB shared.
• Socket: Intel uses Intel Socket 1700; AMD uses AMD Socket AM5.
• Memory Support: Intel supports DDR4, DDR5; AMD supports only DDR5.
• PCIe Lanes: Intel has 16 Gen 5 lanes; AMD has 24 Gen 5 lanes.
• Integrated Graphics: Intel has UHD 730; AMD has Radeon Graphics.
• Release Date: Intel is 2026-03-08; AMD is 2025-05-12.
• Launch MSRP: Intel is $549; AMD is $329.

The Verdict

The benchmark data indicates that these two CPUs should be chosen based on workload, not on overall score. The AMD EPYC 4345P is the better choice for general multi-threaded and single-threaded productivity, as it wins the Cinebench suite, data compression, encryption, string sorting, and single-thread Passmark tests. It also has a lower launch MSRP of $329. If you are building a server or workstation that runs typical server workloads, the EPYC 4345P's consistent leads in the 2-4% range across many tests make it the safer default.

The Intel Core 9 273PE is the better choice for math-heavy or physics-based workloads. Its 45.3% lead in floating point math and 12.6% lead in integer math are not small margins. The 21.6% win in the prime numbers test and the 20.8% win in physics suggest that scientific computing, simulation, or financial modeling could benefit significantly from the Intel part. The higher core count (12 vs 8) also gives it a slight edge in the Passmark multithread score, 1.9% ahead.

Where Each Core Wins

The AMD EPYC 4345P wins in:

• All Cinebench tests (R15, R20, R23) with a consistent 2.3% lead, both multi and single core.
• Passmark data compression (3.7% lead).
• Passmark data encryption (2.5% lead).
• Passmark extended instructions (22.2% lead).
• Passmark random string sorting (2.5% lead).
• Passmark single-thread (17.2% lead).

The Intel Core 9 273PE wins in:

• Passmark find prime numbers (21.6% lead).
• Passmark floating point math (45.3% lead).
• Passmark integer math (12.6% lead).
• Passmark multithread (1.9% lead).
• Passmark physics (20.8% lead).

The 90th percentile for both CPUs confirms they are both top-tier performers, but they are not interchangeable. The AMD EPYC 4345P is the more well-rounded server processor, while the Intel Core 9 273PE is a specialized compute accelerator for math-heavy tasks. The EPYC is also the better value on paper, given its lower launch MSRP, but the database does not assess value; it only reports the price. The choice should be based on the specific benchmark wins that match your workload.