AMD Ryzen 7 5800U vs Intel Xeon E5-1680 v3 Comparison

Head-to-Head Benchmarks

The recorded data splits the two processors evenly, with each claiming two wins across the shared Cinebench tests. The AMD Ryzen 7 5800U takes the lead in the older Cinebench R15 suite, while the Intel Xeon E5-1680 v3 dominates the newer R23 workload. This split suggests the two chips have very different performance profiles depending on the generation of the test software.

In Cinebench R15 multi-core, the AMD Ryzen 7 5800U scores 1613 against the Intel Xeon's 1137, a 29.5% advantage for AMD. The single-core R15 result shows an even larger gap: the Ryzen 7 5800U posts 229 versus 160 for the Xeon, a 30.1% difference. These are substantial margins, indicating that in this legacy benchmark, the AMD chip is clearly superior in both lightly threaded and fully threaded workloads.

The picture flips dramatically in Cinebench R23. The Intel Xeon E5-1680 v3 scores 11289 in multi-core, which is 38.4% ahead of the Ryzen 7 5800U's 8154. The single-core R23 test also favors Intel, with the Xeon scoring 1593 against AMD's 1427, an 11.6% edge. This reversal is striking: the same two processors swap winners between benchmark generations, with Intel holding the larger margin in its winning tests (38.4% vs 29.5%) and AMD also holding a significant lead in its strongest area (30.1% vs 11.6%).

Looking at the average benchmark scores in the database, the AMD Ryzen 7 5800U sits slightly higher overall at 3369, compared to the Intel Xeon's 3265. The percentile rankings also place them close: the Ryzen 7 5800U is at the 54th percentile of all CPUs, while the Xeon is at the 53rd. The nearest rivals for the AMD chip include the Intel Xeon D-1587 (3350, 0.6% lower) and the AMD Ryzen 5 PRO 7530U (3394, 0.7% higher), while the Xeon's closest competitors include the Intel Xeon E5-1660 v4 (3264, effectively tied) and the AMD Ryzen Embedded V2516 (3277, 0.4% higher).

Where Each One Wins

The benchmark data points to distinct use cases where each processor excels. The AMD Ryzen 7 5800U is the clear winner in Cinebench R15, both in multi-core and single-core tests. This suggests that for applications that rely on older instruction sets or are optimized for the workload patterns of that era, the AMD chip offers a significant performance advantage. The 30.1% lead in single-core R15 is particularly noteworthy, as it indicates the Ryzen 7 5800U's Zen 3 architecture handles legacy single-threaded tasks much more efficiently than the older Haswell-based Xeon.

Conversely, the Intel Xeon E5-1680 v3 dominates Cinebench R23, with a 38.4% lead in multi-core and an 11.6% lead in single-core. The R23 workload is generally more demanding and better reflects modern compute patterns, especially for multi-threaded rendering tasks. The large multi-core margin suggests that sustained, heavy workloads that scale well across all 16 threads will favor the Intel chip, despite its older architecture. The fact that Intel also wins single-core R23, even by a smaller margin, indicates that the Xeon's higher boost clock of 3.80 GHz (compared to the Ryzen's 4.40 GHz boost, though the Ryzen's base is much lower at 1900 MHz) and its larger 20 MB shared L3 cache contribute to its strength in this newer test.

The average benchmark score from the database slightly favors AMD, but the head-to-head results show a clear split: AMD for legacy workloads, Intel for modern multi-threaded rendering. Users running older software that matches R15's characteristics will see better results with the Ryzen 7 5800U, while those pushing current rendering engines or CPU-bound tasks similar to R23 should expect the Xeon E5-1680 v3 to deliver higher throughput.

Architecture Differences

The two processors come from vastly different eras and design philosophies. The Intel Xeon E5-1680 v3 is built on the Haswell architecture, specifically Haswell-EP, using a 22 nm process node from Intel's own foundry. It packs 2,600 million transistors on a 356 mm² die. The AMD Ryzen 7 5800U, by contrast, uses the Zen 3 architecture (Cezanne-U) on a 7 nm process from TSMC, with 10,700 million transistors on a much smaller 180 mm² die. The density difference is enormous: AMD crams over four times as many transistors into roughly half the die area.

Cache configurations differ notably. Both have 64 KB of L1 per core, but the L2 cache is 256 KB per core on the Intel chip versus 512 KB per core on the AMD. The L3 cache also differs: the Xeon has 20 MB shared, while the Ryzen 7 5800U has 16 MB shared. Despite the smaller total L3, the AMD chip's larger per-core L2 may help in certain workloads.

Memory support shows another divergence. Both support DDR4, but the Intel Xeon uses a quad-channel memory bus with a theoretical bandwidth of 68.3 GB/s, while the AMD Ryzen 7 5800U uses dual-channel with 51.2 GB/s. The Xeon also supports ECC memory, while the Ryzen 7 5800U does not. PCIe connectivity favors the Intel chip heavily: it offers Gen 3 with 40 lanes (CPU only), while the AMD mobile chip provides Gen 3 with just 8 lanes. The Intel Xeon targets the server/workstation segment, whereas the Ryzen 7 5800U is a mobile processor with integrated Radeon Vega 8 graphics, something the Xeon lacks entirely.

Power characteristics are starkly different. The Intel Xeon has a 140 W TDP, while the AMD Ryzen 7 5800U draws just 15 W. This nearly tenfold difference in power envelope explains much of the performance divergence: the Xeon can sustain high clocks across all cores, while the Ryzen is designed for efficiency in thin laptops. The AMD chip also features a locked multiplier, while the Intel Xeon is multiplier-unlocked, allowing overclocking.

FAQ

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 7 5800U boosts up to 4.40 GHz, while the Intel Xeon E5-1680 v3 boosts to 3.80 GHz. However, the Xeon has a much higher base clock at 3.20 GHz versus the Ryzen's 1900 MHz base.

Q: Why does the Intel Xeon win Cinebench R23 multi-core by such a large margin?

A: The Xeon scores 11289 in R23 multi-core, which is 38.4% ahead of the Ryzen 7 5800U's 8154. This likely stems from its 140 W TDP, quad-channel memory with 68.3 GB/s bandwidth, and 40 PCIe Gen 3 lanes, which allow for sustained high-power operation, despite having the same 8-core, 16-thread configuration.

Q: Does the AMD Ryzen 7 5800U support ECC memory?

A: No, the database lists ECC memory support as false for the AMD Ryzen 7 5800U. The Intel Xeon E5-1680 v3 does support ECC memory, which is typical for its server/workstation market segment.

Q: What is the process node difference between the two chips?

A: The Intel Xeon E5-1680 v3 uses a 22 nm process from Intel, while the AMD Ryzen 7 5800U uses a 7 nm process from TSMC. This explains the transistor count difference: 2,600 million for Intel versus 10,700 million for AMD, even though the AMD die is smaller at 180 mm² versus 356 mm².

Q: Which processor has integrated graphics?

A: Only the AMD Ryzen 7 5800U includes integrated graphics, specifically Radeon Vega 8. The Intel Xeon E5-1680 v3 has no integrated graphics listed in the database.

Q: How do their average benchmark scores compare?

A: The AMD Ryzen 7 5800U has an average benchmark score of 3369, which is higher than the Intel Xeon's 3265. The Ryzen also sits at the 54th percentile of all CPUs, while the Xeon is at the 53rd percentile, making them very closely matched overall.

Specification Differences

The table below highlights only the fields where the two processors differ according to the recorded data:

| Field | Intel Xeon E5-1680 v3 | AMD Ryzen 7 5800U |

|---|---|---|

| Manufacturer | Intel | AMD |

| Base Clock | 3.20 GHz | 1900 MHz |

| Boost Clock | 3.80 GHz | 4.40 GHz |

| TDP | 140 W | 15 W |

| Socket | Intel Socket 2011-3 | AMD Socket FP6 |

| Architecture | Haswell | Zen 3 |

| Codename | Haswell-EP | Cezanne-U |

| Process Node | 22 nm | 7 nm |

| Foundry | Intel | TSMC |

| Transistors | 2,600 million | 10,700 million |

| Die Size | 356 mm² | 180 mm² |

| L2 Cache | 256 KB (per core) | 512 KB (per core) |

| L3 Cache | 20 MB (shared) | 16 MB (shared) |

| Memory Bus | Quad-channel | Dual-channel |

| Memory Bandwidth | 68.3 GB/s | 51.2 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 3, 40 Lanes | Gen 3, 8 Lanes |

| Integrated Graphics | None | Radeon Vega 8 |

| Market Segment | Server/Workstation | Mobile |

| Production Status | End-of-life | Active |

| Release Date | 2014-09-07 | 2021-01-11 |

| Multiplier Unlocked | Yes | No |

| Part Number | QFSSSR20H | 100-000000285 |

The Verdict

The data presents a clear trade-off between two very different 8-core, 16-thread processors. For users running modern, heavily threaded workloads similar to Cinebench R23, the Intel Xeon E5-1680 v3 is the stronger choice. Its 38.4% multi-core lead in that test, combined with an 11.6% single-core advantage, shows it can handle current rendering and compute tasks with greater throughput. The Xeon's quad-channel memory (68.3 GB/s) and 40 PCIe Gen 3 lanes also make it suitable for workstation environments that need high I/O bandwidth, and its ECC memory support adds reliability for server-class applications.

The AMD Ryzen 7 5800U, however, is the better option for legacy software and efficiency-critical scenarios. Its 29.5% and 30.1% wins in Cinebench R15 multi-core and single-core, respectively, indicate superior performance for older applications. The 15 W TDP makes it overwhelmingly more power-efficient than the 140 W Xeon, which is essential for mobile devices. The integrated Radeon Vega 8 graphics eliminate the need for a discrete GPU in basic display tasks, and the 7 nm process with 10,700 million transistors shows a modern, dense design that wins on per-watt performance.

In short, the choice depends on the workload: pick the Intel Xeon E5-1680 v3 for modern, multi-threaded, high-power desktop or server tasks where sustained performance and memory bandwidth matter most. Pick the AMD Ryzen 7 5800U for mobile systems, legacy application compatibility, and scenarios where power consumption is a primary constraint. The overall average benchmark scores are nearly identical, but the workload profile will determine which chip feels faster in practice.