AMD EPYC 4344P vs Intel Core i9-12900KS Comparison

The Intel Core i9-12900KS and the AMD EPYC 4344P present a fascinating study in contrasting design philosophies. The data shows a desktop processor engineered for maximum frequency and a server chip optimized for efficiency and density, yet their average benchmark scores place them within a 1.3% margin of each other. This proximity in overall performance, despite their different market segments, makes their head-to-head comparison particularly revealing.

Where Each One Wins

The benchmark distribution is starkly one-sided, with the Intel Core i9-12900KS claiming victory in 16 of the 17 recorded head-to-head tests. Its wins span a wide range of workloads, from rendering and physics to integer math and data compression. The Intel chip’s dominance is most pronounced in floating-point operations, where it leads by a massive 73.4%, and in integer math, where it is 38.9% ahead. This suggests the 12900KS is the clear choice for compute-heavy tasks that stress the processor’s arithmetic and rendering capabilities.

The AMD EPYC 4344P secures only a single head-to-head victory, but it is a telling one. In the passmark_find_prime_numbers test, the EPYC outscores the Intel chip by 7.1%. This test is often associated with cache latency and branch prediction efficiency. While the EPYC loses the overall war, this isolated win hints that its Zen 4 architecture handles certain specific, latency-sensitive algorithms more effectively than the Alder Lake design, even when facing a significantly higher-clocked competitor.

Beyond the head-to-head tests, the EPYC’s profile shows a different kind of strength. While its scores are lower, its 65W TDP is less than half of the Intel chip’s 150W. In a server context, where power density and cooling are primary concerns, this efficiency is a significant advantage that raw performance benchmarks do not capture. The data indicates the EPYC is not about winning every race, but about delivering competitive performance within a much smaller power envelope.

Architecture Differences

The two processors are built on fundamentally different foundations. The Intel Core i9-12900KS is based on the Alder Lake architecture, fabricated on Intel’s 10 nm process, and uses a hybrid design with 16 cores and 24 threads. Its boost clock reaches 5.50 GHz, a figure that contributes to its strong single-threaded performance. The chip has a die size of 215 mm² and supports both DDR4 and DDR5 memory, offering flexibility in platform choice.

The AMD EPYC 4344P, in contrast, is a Zen 4 part built on TSMC’s 5 nm process. It is a more compact chip, with a die size of 71 mm² and 6,570 million transistors. It has 8 cores and 16 threads, with a boost clock of 5.30 GHz. The EPYC exclusively supports DDR5 memory and offers a higher memory bandwidth of 83.2 GB/s compared to the Intel’s 76.8 GB/s. The EPYC also provides more PCIe lanes, with 28 Gen 5 lanes from the CPU, versus 16 on the Intel chip.

The cache hierarchies also differ. The Intel chip has a larger L2 cache per core at 1.25 MB, while the EPYC has 1 MB per core. However, the EPYC has a larger shared L3 cache at 32 MB, compared to the 30 MB on the Intel chip. The EPYC’s smaller process node and die size indicate a more modern, denser design, while the Intel chip relies on higher clock speeds and a greater number of cores to achieve its performance.

Head-to-Head Benchmarks

The most striking pattern in the head-to-head results is the consistency of the Intel chip’s lead. In Cinebench testing, the 12900KS is 29.7% ahead in both R15 and R23 multicore tests, and a similar 29.8% ahead in R20 multicore. The single-core results are equally lopsided, with the Intel chip winning by 29.7% in R15 and 29.8% in R20 and R23. This consistency across the entire Cinebench suite suggests a fundamental advantage in both multi-threaded rendering and single-threaded tasks.

The Passmark results tell a similar story but with more variance. In floating-point math, the Intel chip’s lead is a commanding 73.4%, a massive gap that indicates a significant architectural advantage in this workload. The lead in integer math is 38.9%, and in data compression it is 38.2%. These are substantial margins that point to the 12900KS being the superior processor for general compute and data manipulation tasks.

The EPYC’s sole win in the prime number test is a minor point, but it is importantly its scores in other Passmark tests are not competitive. In the multithread test, the Intel chip is 29.7% ahead, and in the single-thread test, it leads by 21.6%. The data shows a clear hierarchy: the 12900KS is the faster processor in almost every measurable way, with the EPYC’s only advantage being its efficiency and specific niche performance.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD EPYC 4344P has a slightly higher average benchmark score of 45586, compared to the Intel Core i9-12900KS’s 45023. The deltaPct between them is 1.3% in favor of the EPYC.

Q: Is the Intel Core i9-12900KS always faster than the AMD EPYC 4344P?

A: No. While the Intel chip wins 16 of the 17 head-to-head tests, the EPYC 4344P wins the passmark_find_prime_numbers test by 7.1%, indicating it is faster in that specific workload.

Q: How significant is the Intel chip’s lead in multi-core rendering?

A: The lead is substantial. In Cinebench R23 multicore, the Intel chip scores 37152 versus the EPYC’s 28636, a difference of 29.7%. This suggests a major advantage in rendering and heavily threaded workloads.

Q: What is the biggest performance gap between the two processors?

A: The largest gap is in passmark_floating_point_math, where the Intel Core i9-12900KS is 73.4% ahead of the AMD EPYC 4344P. This is the most decisive single-result advantage in the data.

Q: Do both processors support ECC memory?

A: Yes, the fact pack lists eccMemory as true for both the Intel Core i9-12900KS and the AMD EPYC 4344P.

Q: How do their power requirements compare?

A: The Intel Core i9-12900KS has a TDP of 150W, while the AMD EPYC 4344P has a TDP of 65W. This makes the EPYC significantly more power-efficient on paper.

Specification Differences

| Specification | Intel Core i9-12900KS | AMD EPYC 4344P |

|:--- |:--- |:--- |

| Cores | 16 | 8 |

| Threads | 24 | 16 |

| Base Clock | 3.40 GHz | 3.80 GHz |

| Boost Clock | 5.50 GHz | 5.30 GHz |

| TDP | 150 W | 65 W |

| Socket | Intel Socket 1700 | AMD Socket AM5 |

| Process Node | 10 nm | 5 nm |

| Foundry | Intel | TSMC |

| Transistors | Not specified | 6,570 million |

| Die Size | 215 mm² | 71 mm² |

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

| L2 Cache | 1.25 MB (per core) | 1 MB (per core) |

| L3 Cache | 30 MB (shared) | 32 MB (shared) |

| Memory Support | DDR4, DDR5 | DDR5 |

| Memory Bandwidth | 76.8 GB/s | 83.2 GB/s |

| PCIe Lanes | Gen 5, 16 Lanes (CPU only) | Gen 5, 28 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 770 | Radeon Graphics |

| Market Segment | Desktop | Server/Workstation |

| Release Date | 2022-04-04 | 2024-05-20 |

| Launch MSRP | $739 | $329 |

| Multiplier Unlocked | Yes | No |

The Verdict

The data paints a clear picture for different users. The Intel Core i9-12900KS is the undisputed performance champion in nearly every benchmark recorded. For workloads that demand maximum compute throughput, such as Cinebench rendering, floating-point math, and integer operations, the 12900KS is the superior choice. Its 29.7% lead in Cinebench R23 multicore and 73.4% lead in floating-point math are decisive advantages that make it the obvious pick for users prioritizing raw speed above all else.

The AMD EPYC 4344P, however, is not without its merits. Its single victory in the prime number test suggests it can be competitive in specific, latency-sensitive tasks. More importantly, its design goals are different. With half the TDP of the Intel chip, it offers a compelling option for server and workstation environments where power consumption and heat dissipation are critical constraints. It also provides more PCIe lanes and a slightly higher memory bandwidth, which could be beneficial for certain server configurations.

Ultimately, the choice depends on the user’s priorities. The data shows that the 12900KS is for those who want the fastest possible performance in a desktop context, accepting higher power draw. The EPYC 4344P is for those who need server-grade efficiency, ECC memory support, and a modern, compact design, and who are willing to trade a significant amount of multi-threaded performance for those benefits. The 1.3% difference in average score is misleading; the character of their performance is entirely different.