AMD Ryzen 5 3501U vs Intel Xeon 6756E Comparison

The AMD Ryzen 5 3501U and Intel Xeon 6756E represent opposite ends of the computing spectrum, and the benchmark data reflects that stark divide. The data shows a clear split: the Xeon dominates in almost every multi-threaded and throughput-oriented test, while the Ryzen holds a decisive edge in single-thread performance. The head-to-head results are lopsided, with the Xeon winning 9 of 11 tests, but the nature of those wins and the single loss for the Xeon are both significant.

Head-to-Head Benchmarks

The most dramatic victory for the Intel Xeon 6756E comes in the `passmark_find_prime_numbers` test, where it scores 133 versus the Ryzen’s 21. This represents a 84.2% advantage for the Xeon, the largest delta in the entire comparison. This result is a direct reflection of the Xeon’s massive 128-core count, which allows it to brute-force this workload with sheer parallelism.

The Xeon also demonstrates overwhelming superiority in floating-point and physics workloads. In `passmark_floating_point_math`, the Xeon’s score of 22451 eclipses the Ryzen’s 12707, a 43.4% lead. Similarly, the `passmark_physics` test shows a 67% gap, with the Xeon scoring 1463 against the Ryzen’s 483. These results indicate that the Xeon is not just a core-count monster but also has the memory bandwidth and cache hierarchy to feed those cores effectively in complex mathematical simulations.

The `passmark_extended_instructions` benchmark further reinforces the Xeon’s dominance, with a score of 6596 compared to the Ryzen’s 3274, a 50.4% difference. Data compression and encryption also favor the Xeon, though by smaller margins. In `passmark_data_compression`, the Xeon scores 123443 versus 87380, a 29.2% lead, and in `passmark_data_encryption`, it scores 8409 versus 5580, a 33.6% advantage. Even the `passmark_integer_math` test, which is often more balanced, shows a 14.6% lead for the Xeon with a score of 30806 against the Ryzen’s 26321. The Xeon also wins `passmark_random_string_sorting` by 34.3% (15847 vs 10414) and `passmark_multithread` by 38.2% (11445 vs 7071).

The Ryzen 5 3501U’s only victories are in the single-thread tests, but they are decisive. In both `passmark_single_thread` and `passmark_singlethread`, the Ryzen scores 2136 against the Xeon’s 1646, a 29.8% advantage. This is a crucial data point, indicating that for single-threaded workloads, the Ryzen’s higher boost clock of 3.70 GHz, compared to the Xeon’s 2.60 GHz, provides a significant performance edge. The overall average benchmark scores are remarkably close, with the Ryzen at 14320 and the Xeon at 14163, placing them in the same performance neighborhood on average despite the wildly different workload characteristics.

The Verdict

The data paints a clear picture. The Intel Xeon 6756E is the definitive choice for server and workstation workloads that are heavily parallelized. Its 128 cores and 128 threads, combined with a 96 MB shared L3 cache, deliver massive throughput in multi-threaded tasks like data compression, encryption, and physics simulations. The 67% lead in physics and the 84.2% lead in prime number finding are the kinds of margins that matter in high-performance computing. If a workload can be spread across many cores, the Xeon is the clear winner.

The AMD Ryzen 5 3501U, despite being a 15W mobile part, is the superior processor for single-threaded performance. Its 29.8% lead in the single-thread benchmarks is substantial and highlights the importance of higher clock speeds in legacy or lightly-threaded applications. This makes it the better fit for tasks like general desktop responsiveness, older software, and any application that relies on a single fast core.

For a buyer, the choice is not about which is "better" but which is more appropriate for the task. The Xeon 6756E is for a data center or a professional workstation handling massive parallel workloads. The Ryzen 5 3501U is for a mobile device where efficiency and single-thread speed are prioritized. The Xeon’s launch MSRP of $8428 also clearly positions it as a high-end professional part. The Ryzen, with its 15W TDP and integrated Radeon Vega 8 graphics, is an entirely different product category. The data shows that the Xeon is the undisputed champion of multi-threading, while the Ryzen is the champion of single-thread responsiveness.

FAQ

Q: Which processor has the higher single-thread benchmark score?

A: The AMD Ryzen 5 3501U, with a score of 2136 in `passmark_single_thread`, which is 29.8% higher than the Intel Xeon 6756E’s score of 1646.

Q: In which benchmark does the Intel Xeon 6756E have its largest advantage?

A: The Xeon’s largest win is in `passmark_find_prime_numbers`, where it scores 133 versus the Ryzen’s 21, an 84.2% lead.

Q: What is the difference in memory bandwidth between the two processors?

A: The Intel Xeon 6756E supports eight-channel DDR5 memory with a bandwidth of 409.6 GB/s, while the AMD Ryzen 5 3501U supports dual-channel DDR4 with a bandwidth of 38.4 GB/s.

Q: Does either processor have integrated graphics?

A: The AMD Ryzen 5 3501U includes Radeon Vega 8 integrated graphics, while the Intel Xeon 6756E has no integrated graphics (listed as N/A).

Q: What are the core and thread counts for each processor?

A: The Intel Xeon 6756E has 128 cores and 128 threads, whereas the AMD Ryzen 5 3501U has 4 cores and 4 threads.

Q: How do their average benchmark scores compare?

A: The scores are very close, with the AMD Ryzen 5 3501U averaging 14320 and the Intel Xeon 6756E averaging 14163, a difference of less than 1%.

Specification Differences

The specification sheet reveals the fundamental divergence in design goals. The Intel Xeon 6756E is built for maximum scale, featuring 128 cores and 128 threads, while the AMD Ryzen 5 3501U is a 4-core, 4-thread part. Clock speeds differ significantly, with the Ryzen offering a 2.10 GHz base and 3.70 GHz boost, compared to the Xeon’s 1.80 GHz base and 2.60 GHz boost. The Xeon has a 225W TDP versus the Ryzen’s 15W, reflecting the massive power draw required to feed its core count.

Memory support is another stark contrast. The Xeon uses eight-channel DDR5 with a bandwidth of 409.6 GB/s and supports ECC memory, while the Ryzen uses dual-channel DDR4 with 38.4 GB/s bandwidth and no ECC support. The Xeon also supports PCIe Gen 5 with 88 lanes (CPU only), while the Ryzen is limited to PCIe Gen 3. The Xeon uses the Intel Socket 4710, while the Ryzen uses AMD Socket FP5. The Xeon’s die size is 578 mm², compared to the Ryzen’s 210 mm². Their release dates also differ, with the Xeon released in June 2024 and the Ryzen in May 2026.

Architecture Differences

The architectural chasm between these two is as wide as their spec sheets. The AMD Ryzen 5 3501U is based on the "Picasso" codename and utilizes the Zen+ architecture, built on a 12 nm process at GlobalFoundries. It consists of 4,940 million transistors on a 210 mm² die. Its cache hierarchy is modest, with 96 KB of L1 per core, 512 KB of L2 per core, and 4 MB of shared L3 cache.

The Intel Xeon 6756E, in contrast, is based on the "Sierra Forest" architecture, built on a 5 nm process at Intel. Its die size is 578 mm². Its cache layout is fundamentally different, with 96 KB of L1 per core but a much larger 4 MB of L2 per module and a massive 96 MB of shared L3 cache. This large L3 cache is critical for feeding 128 cores. The Xeon’s architecture is designed for high-density, energy-efficient throughput in data centers, while the Ryzen’s Zen+ architecture is optimized for mobile efficiency and single-thread performance. The Xeon’s core count and cache size are its defining features, while the Ryzen’s higher clock speeds and integrated graphics define its mobile-focused design.