AMD EPYC 4584PX vs Intel Core i9-14900KS Comparison

The AMD EPYC 4584PX and Intel Core i9-14900KS present a fascinating study in contrasting design philosophies, with the data showing a near-even split in benchmark victories: the EPYC claims 9 wins while the i9 takes 8. Despite the Intel part's higher average benchmark score of 81,127 compared to the AMD's 83,090, the head-to-head results reveal a nuanced battlefield where architectural priorities dictate performance outcomes rather than raw core counts. Both processors sit at the 96th percentile of all CPUs, yet they achieve this status through wildly different means—the EPYC as a 16-core, 32-thread server/workstation part on a 5 nm node versus the i9 as a 24-core, 32-thread desktop flagship on Intel's 10 nm process.

Head-to-Head Benchmarks

The Cinebench suite delivers a consistent, if narrow, narrative of AMD superiority. Across all six Cinebench tests—R15, R20, and R23 in both single and multi-core variants—the EPYC 4584PX wins every matchup, though by margins that are almost negligible. The largest Cinebench gap appears in R15 single-core, where the EPYC scores 733 against the i9's 725, a 1.1% advantage. Multi-core results tell a similar story: in R23 multi-core, the EPYC posts 51,524 versus 50,995, a 1% lead. These margins suggest that in pure rendering workloads, the Zen 4 architecture extracts slightly more efficiency per thread, even though the i9 fields eight additional physical cores.

The PassMark suite, however, paints a dramatically different picture. The i9-14900KS dominates in several categories with substantial deltas. The most striking is floating point math, where the Intel part scores 153,975 against the EPYC's 121,460—a 21.1% deficit for AMD. Single-thread performance follows suit, with the i9 achieving 4,815 versus 3,795, a 21.2% edge that highlights the Intel boost clock advantage of 6.20 GHz versus 5.70 GHz. Data compression also favors Intel significantly: 803,368 versus 741,648, a 7.7% win, while data encryption shows a 3.8% lead at 47,717 versus 45,902.

Yet the EPYC strikes back with devastating efficiency in other PassMark metrics. The find prime numbers test is a blowout: 441 versus 244, an 80.7% advantage for AMD—the largest delta in the entire comparison. Extended instructions show an 18.1% win (53,774 versus 45,524), and physics performance favors the EPYC by 35.3% (4,574 versus 3,381). The integer math and random string sorting tests go to Intel by smaller margins of 5% and 2.3% respectively, while the multithread aggregate shows Intel ahead at 60,012 versus 58,117, a 3.2% gap.

FAQ

Q: Which processor wins more benchmark comparisons overall?

A: The AMD EPYC 4584PX wins 9 of the 17 head-to-head benchmark comparisons, while the Intel Core i9-14900KS wins 8, giving AMD a narrow overall victory in terms of test count.

Q: How large is the single-thread performance gap?

A: In PassMark single-thread testing, the i9-14900KS scores 4,815 versus the EPYC's 3,795, representing a 21.2% advantage for Intel. This aligns with the i9's 6.20 GHz boost clock versus the EPYC's 5.70 GHz.

Q: Is there a workload where the EPYC is overwhelmingly superior?

A: Yes, the PassMark find prime numbers test shows the EPYC scoring 441 against the i9's 244, an 80.7% advantage. This suggests the Zen 4 architecture has a substantial edge in integer-heavy algorithmic workloads.

Q: Does the i9's higher core count translate to wins in multi-threaded tests?

A: Not consistently. The i9 has 24 cores versus 16, yet loses all three Cinebench multi-core tests by 1% margins. However, it does win the PassMark multithread test by 3.2%, showing the outcome depends on the specific workload characteristics.

Q: What memory options does each platform support?

A: The EPYC 4584PX supports only DDR5 memory with a dual-channel bus and 83.2 GB/s bandwidth, while the i9-14900KS supports both DDR4 and DDR5, also dual-channel, though no bandwidth figure is available for the Intel part.

Q: Are both processors currently in production?

A: Yes, both the AMD EPYC 4584PX and the Intel Core i9-14900KS have an "Active" production status, with the EPYC released on 2024-05-20 and the i9 released on 2024-03-13.

Architecture Differences

The fundamental architectural divergence is stark. The EPYC 4584PX uses AMD's Zen 4 architecture on a 5 nm TSMC process with 17,840 million transistors spread across a die size of 2x 71 mm². In contrast, the i9-14900KS employs Intel's Raptor Lake architecture on a 10 nm Intel process with a die size of 257 mm², though transistor count is not listed. The EPYC's cache hierarchy is markedly different, featuring 128 MB of shared L3 cache augmented by a 1x 64MB 3D V-Cache slice, totaling an immense 192 MB of L3. The i9 manages only 36 MB of shared L3, a 5.3x deficit that likely explains the EPYC's dominance in cache-sensitive workloads like prime number generation. Per-core L1 and L2 caches also differ: the EPYC provides 64 KB L1 and 1 MB L2 per core, while the i9 provides 80 KB L1 and 2 MB L2 per core—Intel's per-core allocation is larger, but the EPYC's aggregate L3 is overwhelming.

The EPYC integrates Radeon Graphics, while the i9 includes UHD Graphics 770, both offering integrated display capabilities. PCIe connectivity shows the EPYC with Gen 5, 28 lanes (CPU only), versus the i9's Gen 5, 16 lanes—a significant difference for expansion-heavy server workloads. The EPYC targets the Server/Workstation market segment, while the i9 is explicitly a Desktop part, and this positioning is reflected in their socket choices: AMD Socket AM5 versus Intel Socket 1700.

Specification Differences

The specification table reveals several clear divergences. Core counts differ substantially: the EPYC has 16 cores and 32 threads, while the i9 has 24 cores and 32 threads—Intel packs 50% more physical cores but matches thread count due to hyperthreading. Base clocks are 4.20 GHz for AMD versus 3.20 GHz for Intel, but boost clocks flip the advantage: 5.70 GHz for the EPYC versus 6.20 GHz for the i9. TDP ratings show the EPYC at 120 W versus the i9 at 150 W, a 25% higher thermal envelope for Intel. Memory support is exclusive DDR5 for AMD, while Intel offers both DDR4 and DDR5 compatibility. Memory bandwidth is listed at 83.2 GB/s for the EPYC, with no figure provided for the i9. ECC memory is supported by both, a notable feature for the desktop-class i9. The EPYC's launch MSRP is $699, while the i9's launch MSRP is $689. The multiplier is unlocked on the i9 but locked on the EPYC, indicating overclocking headroom for Intel. Process nodes differ at 5 nm for AMD versus 10 nm for Intel. Release dates are two months apart, with Intel launching first on 2024-03-13 and AMD following on 2024-05-20.

Where Each One Wins

The i9-14900KS is the clear champion in single-threaded and floating-point-heavy applications. Its 21.2% lead in PassMark single-thread and 21.1% lead in floating point math makes it the superior choice for lightly-threaded desktop tasks, gaming, and simulation workloads that rely on high per-core throughput. The 7.7% win in data compression and 3.8% win in encryption further position it for file archiving and security-related tasks. The i9's multithread aggregate win by 3.2% and random string sorting by 2.3% round out a profile suited to general productivity and mixed-use desktop environments.

The EPYC 4584PX dominates in algorithmic and cache-intensive workloads. The 80.7% blowout in find prime numbers and 35.3% win in physics point to strengths in scientific computing, simulation, and mathematical modeling. The 18.1% advantage in extended instructions suggests superior SIMD or specialized instruction handling. Its consistent—if narrow—wins across all Cinebench rendering tests make it a solid choice for 3D rendering and video production, despite losing the multithread aggregate. The EPYC's 128 MB L3 plus 64 MB 3D V-Cache gives it a massive memory hierarchy advantage that likely drives these wins, favoring workloads with large working sets that benefit from data locality.

The Verdict

The data guides a clear split: choose the Intel Core i9-14900KS for desktop-centric, single-threaded, and floating-point-heavy workloads where its 6.20 GHz boost clock and 24 cores can flex their muscle—particularly in compression, encryption, and general multithreaded productivity. Its 21.2% single-thread lead and 21.1% floating-point advantage are decisive for interactive applications and real-time simulations. The i9's unlocked multiplier also offers overclocking potential, though the EPYC's lower 120 W TDP suggests better efficiency per watt in sustained loads.

Opt for the AMD EPYC 4584PX when the workload involves heavy mathematical algorithms, physics simulations, or cache-resident data processing. The 80.7% lead in prime number finding and 35.3% lead in physics, combined with an 18.1% edge in extended instructions, make it the analytical powerhouse. Its 128 MB L3 plus 64 MB 3D V-Cache is a unique asset for in-memory databases and scientific workloads. The EPYC also consistently wins every Cinebench test, indicating superior rendering efficiency despite fewer physical cores. For server or workstation deployments where ECC memory, 28 PCIe Gen 5 lanes, and dual-channel DDR5 with 83.2 GB/s bandwidth are priorities, the EPYC is the data-driven choice. Both processors sit at the 96th percentile, but they serve fundamentally different masters—the i9 for responsive desktop power, the EPYC for sustained computational depth.