AMD Athlon PRO 300U vs Intel Xeon E5-1607 v3 Comparison

The Verdict

The Intel Xeon E5-1607 v3 is the clear performance winner in this matchup, taking all five head-to-head Cinebench tests with a consistent margin of roughly 21% across both single-core and multi-core workloads. The AMD Athlon PRO 300U, however, occupies a fundamentally different market position: it is an active, mobile-focused processor with integrated graphics, while the Xeon is an end-of-life server/workstation part. The data suggests that anyone needing maximum compute throughput from the database should choose the Xeon, as it leads the Athlon by 20.9% in Cinebench R15 multicore, R20 multicore, and R23 multicore, and by 21% in R20 singlecore. The Athlon’s only advantages are qualitative: a dramatically lower power envelope, integrated Radeon Vega 3 graphics, and an active production status. For a mobile or embedded scenario where power draw and GPU output matter more than raw CPU scores, the Athlon is the sensible pick; for pure processing power, the Xeon wins outright.

Architecture Differences

The two processors come from entirely different design philosophies and eras. The Intel Xeon E5-1607 v3 is built on the Haswell-EP architecture at a 22 nm process node, fabricated by Intel, with a die size of 356 mm² and 2,600 million transistors. It features 4 cores and 4 threads, with a base clock of 3.10 GHz and no boost clock. The AMD Athlon PRO 300U uses the Zen architecture under the Raven Ridge 2 codename, built on a 14 nm node by GlobalFoundries, with 2 cores and 4 threads. Its base clock is 2.40 GHz, boosting to 3.30 GHz. The Xeon targets the server/workstation segment with an Intel Socket 2011-3, while the Athlon is a mobile part on AMD Socket FP5.

Cache hierarchies differ substantially. The Xeon provides 64 KB of L1 cache per core, 256 KB of L2 per core, and a shared 10 MB L3 cache. The Athlon offers 128 KB of L1 per core, 512 KB of L2 per core, and a smaller 4 MB shared L3. Memory support also diverges: both accept DDR4, but the Xeon runs a quad-channel memory bus with a recorded bandwidth of 59.7 GB/s, whereas the Athlon uses a dual-channel bus with no bandwidth figure recorded. The Xeon supports ECC memory; the Athlon does not. The Xeon exposes Gen 3 PCIe with 40 lanes from the CPU, while the Athlon’s PCIe configuration is not recorded. The Athlon includes integrated Radeon Vega 3 graphics; the Xeon has no integrated graphics listed.

FAQ

Q: Which processor has better multi-core performance?

A: The Intel Xeon E5-1607 v3 wins every recorded multi-core test. It scores 422 vs 349 in Cinebench R15 multicore, 1761 vs 1456 in R20 multicore, and 4193 vs 3468 in R23 multicore, each a 20.9% lead.

Q: Which processor has better single-core performance?

A: The Xeon again leads. In Cinebench R20 singlecore, it scores 248 vs 205, a 21% advantage. In R23 singlecore, it scores 591 vs 489, also a 20.9% lead.

Q: Does the AMD Athlon PRO 300U have integrated graphics?

A: Yes, the Athlon PRO 300U includes Radeon Vega 3 integrated graphics. The Intel Xeon E5-1607 v3 has no integrated graphics listed in the database.

Q: Which processor supports ECC memory?

A: Only the Intel Xeon E5-1607 v3 supports ECC memory. The AMD Athlon PRO 300U does not.

Q: What are the power consumption differences?

A: The Xeon has a TDP of 140 watts, while the Athlon has a TDP of 15 watts. The Athlon consumes far less power, though exact efficiency ratios are not recorded.

Q: Which processor is still in production?

A: The AMD Athlon PRO 300U is listed as active. The Intel Xeon E5-1607 v3 is end-of-life.

Specification Differences

| Field | Intel Xeon E5-1607 v3 | AMD Athlon PRO 300U |

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

| Cores | 4 | 2 |

| Threads | 4 | 4 |

| Base clock | 3.10 GHz | 2.40 GHz |

| Boost clock | None recorded | 3.30 GHz |

| TDP | 140 W | 15 W |

| Socket | Intel Socket 2011-3 | AMD Socket FP5 |

| Architecture | Haswell | Zen |

| Codename | Haswell-EP | Raven Ridge 2 |

| Process node | 22 nm | 14 nm |

| Foundry | Intel | GlobalFoundries |

| Transistors | 2,600 million | Not recorded |

| Die size | 356 mm² | Not recorded |

| L1 cache (per core) | 64 KB | 128 KB |

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

| L3 cache (shared) | 10 MB | 4 MB |

| Memory bus | Quad-channel | Dual-channel |

| Memory bandwidth | 59.7 GB/s | Not recorded |

| ECC memory | Yes | No |

| PCIe | Gen 3, 40 Lanes (CPU only) | Not recorded |

| Integrated graphics | None | Radeon Vega 3 |

| Market segment | Server/Workstation | Mobile |

| Production status | End-of-life | Active |

| Release date | 2014-09-07 | 2019-04-07 |

| Benchmark percentile | 34th | 33rd |

| Average benchmark score | 1212 | 1193 |

Head-to-Head Benchmarks

The benchmark data paints a remarkably consistent picture. The Intel Xeon E5-1607 v3 wins all five recorded comparisons, and every delta sits at either 20.9% or 21%. In Cinebench R15 multicore, the Xeon scores 422 against the Athlon’s 349, a 20.9% margin. The same percentage appears in R20 multicore (1761 vs 1456) and R23 multicore (4193 vs 3468). Single-core tests show a nearly identical gap: R20 singlecore gives the Xeon 248 vs 205, a 21% lead, and R23 singlecore gives 591 vs 489, a 20.9% lead.

The consistency of these margins suggests the Xeon’s advantage is structural rather than workload-specific. Its higher base clock of 3.10 GHz versus 2.40 GHz, combined with double the physical cores (4 vs 2), explains the multicore dominance. The single-core lead is more notable given the Athlon has a boost clock of 3.30 GHz, yet the Xeon still wins by over 20% in both single-core tests. The Xeon’s larger 10 MB L3 cache, quad-channel memory bus, and 59.7 GB/s memory bandwidth likely contribute to its superiority in these rendering workloads.

The average benchmark scores confirm the trend at a broader level: the Xeon averages 1212 across all recorded benchmarks, while the Athlon averages 1193, a difference of 19 points. Percentile rankings are nearly identical, with the Xeon at the 34th percentile and the Athlon at the 33rd percentile of all CPUs in the database. This indicates that while the Xeon wins the direct comparison, both processors sit in similar overall performance tiers relative to the broader CPU landscape.

Where Each One Wins

The Intel Xeon E5-1607 v3 wins every single recorded benchmark in this comparison, so its use case is straightforward: any workload that relies on CPU rendering performance, as measured by Cinebench, should favor the Xeon. Its 4 physical cores, higher base clock, larger L3 cache, and quad-channel memory bandwidth make it the superior choice for multi-threaded tasks like 3D rendering, video encoding, and scientific simulations. The Xeon also supports ECC memory, which is critical for workstation or server environments where data integrity is paramount. Its 40-lane Gen 3 PCIe connectivity provides substantial expansion capability for high-end GPUs or storage controllers, though no specific expansion benchmarks are recorded.

The AMD Athlon PRO 300U wins in scenarios that the benchmark suite does not measure. Its 15-watt TDP is drastically lower than the Xeon’s 140 watts, making it suitable for fanless or battery-powered mobile designs. The integrated Radeon Vega 3 graphics eliminate the need for a discrete GPU in basic display or multimedia tasks, which the Xeon cannot offer at all. The Athlon is also an active product, still in production, whereas the Xeon is end-of-life, so system builders looking for long-term availability should consider the Athlon. Its smaller 4 MB L3 cache and dual-channel memory are adequate for light productivity, office work, and web browsing, where the 20% performance deficit to the Xeon is unlikely to be perceptible.

The data does not record any benchmark where the Athlon wins, so any claim of its superiority must rest on non-performance factors: power efficiency, integrated graphics, and production status. For users who need maximum CPU throughput from the database, the Xeon is the unambiguous choice. For users who need a low-power, mobile-friendly processor with graphics output and ongoing availability, the Athlon is the only viable option between the two.