AMD EPYC 9174F vs Intel Xeon Bronze 3408U Comparison

The Intel Xeon Bronze 3408U and AMD EPYC 9174F occupy vastly different positions in the server processor landscape, despite sharing the same 67th percentile ranking among all CPUs. The data shows a complete sweep for the AMD part across every shared benchmark, with the EPYC 9174F delivering roughly 5.5x the multi-threaded performance in Cinebench R23 (46489 vs 8473). The Xeon Bronze 3408U is positioned as a low-power entry point into the Sapphire Rapids platform, while the EPYC 9174F represents AMD's high-frequency 16-core offering in the Genoa lineup. Neither processor is a reasonable substitute for the other; the choice depends entirely on whether the workload demands raw throughput (EPYC) or platform economics with modest compute (Xeon Bronze).

The Verdict

The AMD EPYC 9174F is the clear performance victor, winning all six head-to-head benchmark comparisons with a consistent -81.8% delta percentage from the Intel part. In Cinebench R23 multi-core, the EPYC scores 46489 against the Xeon's 8473, a 5.5x advantage that reflects both double the cores (16 vs 8) and quadruple the threads (32 vs 8). Single-threaded performance tells a similar story: the EPYC's 6563 in Cinebench R23 single-core dwarfs the Xeon's 1196, driven by its 4.10 GHz base and 4.40 GHz boost clocks versus the Xeon's 1.80 GHz base and 1.90 GHz boost. The Xeon Bronze 3408U is only appropriate for workloads with minimal compute demands that still require the Sapphire Rapids platform features like DDR5 memory and PCIe Gen 5. The EPYC 9174F, meanwhile, is designed for compute-intensive server applications where its 256 MB of shared L3 cache and twelve-channel memory bus (460.8 GB/s) provide massive bandwidth headroom. The data indicates no scenario where the Xeon's performance profile competes; its 67th percentile ranking matches the EPYC's, but that equivalence is misleading—the Xeon's average benchmark score of 12019 sits within 4.3% of the EPYC's 12536, though the EPYC's benchmark suite includes Geekbench results that the Xeon lacks, skewing the comparison. For buyers needing the EPYC's class of performance, the Xeon is not an option; for buyers needing a low-power Xeon, the EPYC's 320W TDP is prohibitive.

FAQ

Q: Which processor has higher multi-threaded performance?

A: The AMD EPYC 9174F wins decisively. In Cinebench R23 multi-core, it scores 46489 versus the Intel Xeon Bronze 3408U's 8473, a -81.8% delta percentage for the Xeon. The EPYC also leads Cinebench R20 multi-core with 19525 against 3558, and Cinebench R15 multi-core with 4686 against 853.

Q: How do their single-threaded scores compare?

A: The EPYC 9174F dominates single-threaded tests as well. In Cinebench R23 single-core, it scores 6563 versus 1196 for the Xeon. Cinebench R20 single-core shows 2756 for EPYC versus 502 for Xeon, and Cinebench R15 single-core shows 661 versus 120. All six head-to-head benchmarks show the same -81.8% delta percentage favoring AMD.

Q: What are the core and thread counts?

A: The AMD EPYC 9174F has 16 cores and 32 threads. The Intel Xeon Bronze 3408U has 8 cores and 8 threads. This 2x core and 4x thread advantage is a primary driver of the EPYC's multi-threaded performance lead.

Q: How does memory bandwidth differ between the two?

A: The EPYC 9174F supports twelve-channel DDR5 memory with a bandwidth of 460.8 GB/s. The Xeon Bronze 3408U supports eight-channel DDR5 with a bandwidth of 256.0 GB/s. Both support ECC memory, but the EPYC offers 80% more bandwidth capacity.

Q: What is the process node and foundry for each?

A: The AMD EPYC 9174F uses a 5 nm process from TSMC, with 52,560 million transistors across 8x 72 mm² dies. The Intel Xeon Bronze 3408U uses Intel's 10 nm process. The EPYC's smaller node contributes to its higher clock speeds despite a higher TDP.

Q: Which processor has more PCIe lanes?

A: The EPYC 9174F provides 128 PCIe Gen 5 lanes (CPU only), while the Xeon Bronze 3408U provides 80 PCIe Gen 5 lanes (CPU only). The EPYC offers 60% more lanes for expandability in dense server configurations.

Architecture Differences

The architectural gap between these two processors is generational and fundamental. The Intel Xeon Bronze 3408U is built on Sapphire Rapids, Intel's 10 nm server architecture, and belongs to the Xeon Bronze (Sapphire Rapids-SP) generation. It features 8 cores and 8 threads with no hyper-threading, a notable limitation for a server chip. Its cache hierarchy includes 80 KB of L1 per core, 2 MB of L2 per core, and a shared 22.5 MB L3 cache. The Xeon uses Intel Socket 4677 and has a TDP of 125W, reflecting its positioning as an energy-conscious entry point.

The AMD EPYC 9174F is a Zen 4 architecture part from the EPYC 9004 series, codenamed Genoa. It is built on TSMC's 5 nm process with 52,560 million transistors spread across 8x 72 mm² chiplets, a multi-die design that contrasts with Intel's monolithic approach. The EPYC has 16 cores and 32 threads with simultaneous multi-threading enabled. Its cache design differs significantly: 64 KB L1 per core, 1 MB L2 per core, and a massive 256 MB shared L3 cache—over 11x the L3 capacity of the Xeon. The EPYC uses AMD Socket SP5 and carries a 320W TDP, more than double the Xeon's power envelope.

Memory architecture also diverges sharply. Both support DDR5, but the EPYC implements a twelve-channel memory bus with 460.8 GB/s bandwidth, while the Xeon uses eight channels at 256.0 GB/s. PCIe capabilities favor the EPYC with 128 Gen 5 lanes versus 80 for the Xeon. These architectural differences—process node, core count, cache size, memory channels, and PCIe lanes—combine to explain the EPYC's overwhelming benchmark advantage. The Xeon's smaller L3 cache (22.5 MB) and lack of SMT make it unsuitable for heavily threaded workloads, while the EPYC's 256 MB L3 and 32 threads are designed for exactly those scenarios.

Specification Differences

The two processors differ across nearly every specification category. Core count: 8 for Intel versus 16 for AMD. Threads: 8 for Intel versus 32 for AMD. Base clock: 1.80 GHz for Intel versus 4.10 GHz for AMD. Boost clock: 1.90 GHz for Intel versus 4.40 GHz for AMD. TDP: 125W for Intel versus 320W for AMD. Process node: 10 nm for Intel versus 5 nm for AMD. Foundry: Intel versus TSMC. Transistors: not listed for Intel versus 52,560 million for AMD. Die size: not listed for Intel versus 8x 72 mm² for AMD.

Cache configurations differ substantially. Intel has 80 KB L1 per core, 2 MB L2 per core, and 22.5 MB L3. AMD has 64 KB L1 per core, 1 MB L2 per core, and 256 MB L3. Memory bus: eight-channel for Intel versus twelve-channel for AMD. Memory bandwidth: 256.0 GB/s for Intel versus 460.8 GB/s for AMD. PCIe lanes: 80 for Intel versus 128 for AMD, both Gen 5. Socket: Intel Socket 4677 versus AMD Socket SP5. Release date: January 2023 for Intel versus November 2022 for AMD. Launch MSRP: $425 for Intel, $3850 for AMD. Part numbers: SRMGB for Intel, 100-100000796 for AMD.

Both support DDR5 and ECC memory, have no integrated graphics, are active in production, and have locked multipliers. Both target the server/workstation market segment. The Xeon's generation is "Xeon Bronze (Sapphire Rapids-SP)" while the EPYC's is "EPYC (Zen 4 (Genoa))". The EPYC has a series designation (EPYC 9004 series) while the Xeon lists none. These specification gaps directly translate to the performance differences observed in benchmarks.

Head-to-Head Benchmarks

The six shared benchmarks show a uniform outcome: the AMD EPYC 9174F wins every test with a -81.8% delta percentage for the Intel part. This consistency indicates a fundamental performance gap rather than workload-specific advantages. Starting with Cinebench R15 multi-core, the EPYC scores 4686 against the Xeon's 853. The single-core version shows 661 versus 120. In Cinebench R20, multi-core results are 19525 for EPYC versus 3558 for Xeon, while single-core is 2756 versus 502. Cinebench R23 continues the pattern: multi-core 46489 versus 8473, single-core 6563 versus 1196.

The -81.8% delta percentage across all six tests means the Xeon's scores are consistently about 18.2% of the EPYC's scores. This ratio holds regardless of test type—rendering workloads (Cinebench) all show the same relative gap. The EPYC's advantages stem from its 4.10/4.40 GHz clocks, 16 cores with SMT, and 256 MB L3 cache. The Xeon's 1.80/1.90 GHz clocks and 8 non-threaded cores cannot compensate even in single-threaded tests, where the EPYC's 4.4 GHz boost provides a 2.3x clock advantage that translates to a 5.5x score advantage in Cinebench R23 single-core.

The benchmark data includes additional tests for each processor that are not directly comparable. The Xeon has PassMark results including data compression (95714), data encryption (5274), extended instructions (10387), find prime numbers (119), floating point math (29142), integer math (22803), multithread (9969), physics (1114), random string sorting (12073), and single thread (1516). The EPYC has Geekbench results: multi-core 17363 and single-core 2244. These additional benchmarks cannot be head-to-head compared but contribute to the average benchmark scores: 12019 for the Xeon and 12536 for the EPYC. The nearest rivals for each processor confirm their market positions—the Xeon's rivals include the Intel Xeon Gold 6314U (avg 12026, delta -0.1%) and AMD Ryzen 5 3500X (avg 12000, delta 0.2%), while the EPYC's rivals include the Intel Core i5-1230U (avg 12559, delta -0.2%) and Intel Core i3-1215U (avg 12604, delta -0.5%). These comparisons show both processors sit in the mid-range of overall CPU performance, but the EPYC achieves this with far more compute capability and power draw.