AMD Ryzen 3 5125C vs Intel Xeon E5-2620 v3 Comparison

The Intel Xeon E5-2620 v3 and AMD Ryzen 3 5125C occupy the same overall performance percentile (43rd), yet they are engineered for entirely different jobs. The Xeon is a six-core, twelve-thread server processor built on Intel’s 22 nm Haswell-EP architecture, while the Ryzen 3 is a dual-core, four-thread mobile chip on AMD’s 7 nm Zen 3 design. Benchmark averages nearly match—1907 for the Xeon versus 1902 for the Ryzen—but the underlying strengths diverge sharply: the Xeon wins heavily in multi-threaded workstation loads, whereas the Ryzen dominates in single-thread responsiveness and power efficiency.

Where Each One Wins

The Xeon E5-2620 v3 is the clear winner for multi-threaded throughput. Its Cinebench R23 multi-core score of 6595 dwarfs the Ryzen 3 5125C’s contribution in that same test category, though the Ryzen lacks a R23 result in the data. Looking at the shared benchmark suite, the Xeon’s Cinebench R15 multi-core score of 664 and R20 multi-core score of 2769 reflect its 6-core/12-thread configuration. The Ryzen 3 5125C, with only 2 cores and 4 threads, is not designed for this workload; its benchmark data instead focuses on Geekbench, where it scores 2566 multi-core and 1237 single-core. In any render-heavy or parallel task—video encoding, 3D rendering, scientific simulation—the Xeon’s additional cores and threads provide a decisive advantage.

The Ryzen 3 5125C wins decisively in single-thread performance. Its Geekbench single-core score of 1237 is not directly comparable to the Xeon’s Cinebench single-core scores (93 in R15, 391 in R20, 931 in R23) because they are different tests, but the architectural evidence is clear: the Ryzen runs at a 3.00 GHz base clock on a modern 7 nm Zen 3 core, while the Xeon’s base is 2.40 GHz with a 3.20 GHz boost. Zen 3’s instructions-per-clock advantage over the older Haswell design is well established in the benchmark data. For everyday responsiveness—application launches, web browsing, office work—the Ryzen’s higher clock speed and newer core architecture make it the more responsive choice.

Power efficiency is another Ryzen stronghold. The Xeon carries an 85 W TDP, while the Ryzen 3 5125C sips just 15 W. That 70-watt gap means the Ryzen is suited for fanless or ultra-portable designs, whereas the Xeon requires active cooling and a workstation power budget. The Ryzen also integrates Radeon Vega 3 graphics, eliminating the need for a discrete GPU in basic display tasks; the Xeon has no integrated graphics at all.

Architecture Differences

The two processors come from different eras and design philosophies. The Xeon E5-2620 v3 uses Intel’s Haswell-EP architecture on a 22 nm process node, fabricated by Intel with 2,600 million transistors on a 356 mm² die. It features 6 cores and 12 threads, with a base clock of 2.40 GHz and a boost clock of 3.20 GHz. The Ryzen 3 5125C uses AMD’s Zen 3 architecture on a 7 nm process node from TSMC, packing 10,700 million transistors into a 180 mm² die—a much denser design. It offers 2 cores and 4 threads, with a base clock of 3.00 GHz and no boost clock listed.

Cache hierarchies differ substantially. Both have 64 KB of L1 cache per core, but the Xeon’s L2 is 256 KB per core versus the Ryzen’s 512 KB per core. L3 cache is 15 MB shared on the Xeon versus 8 MB shared on the Ryzen. Despite having fewer cores, the Ryzen’s larger per-core L2 and newer memory architecture compensate partially, but the Xeon’s bigger total L3 helps in multi-threaded workloads with large shared data sets.

Memory support shows a similar split. The Xeon supports DDR4 in quad-channel configuration, yielding 59.7 GB/s of memory bandwidth, and it supports ECC memory—critical for server reliability. The Ryzen supports DDR4 in dual-channel, with 51.2 GB/s bandwidth, and does not support ECC. For server or workstation use, the Xeon’s ECC support and higher bandwidth are non-negotiable features. The Ryzen’s PCIe implementation is also narrower: 8 lanes of Gen 3 versus the Xeon’s 40 lanes of Gen 3, making the Xeon far more suitable for multi-GPU or high-speed storage configurations.

The Xeon’s market segment is explicitly Server/Workstation, and it is end-of-life. The Ryzen is a Mobile part, currently active in production. The Xeon was released in 2014, the Ryzen in 2022—an eight-year gap that explains the architectural leap. The Xeon’s launch MSRP was $417; the Ryzen has no launch MSRP listed.

Head-to-Head Benchmarks

Direct head-to-head benchmark comparisons are absent from the data, but the available scores allow for meaningful analysis. The Xeon’s Cinebench R23 multi-core score of 6595 and single-core score of 931 demonstrate its split personality: strong parallel performance, modest single-thread capability. The Ryzen’s Geekbench scores of 2566 multi-core and 1237 single-core show a different balance—relatively weaker multi-core (due to only 2 cores) but much stronger single-core.

Average benchmark scores place the two nearly identical: the Xeon averages 1907, the Ryzen 1902. The Xeon’s nearest rivals include the Intel Xeon E3-1285 v4 (1908, delta 0%), AMD Ryzen 5 PRO 2400GE (1910, -0.2%), and Intel Core i3-9100F (1903, 0.2%). The Ryzen’s nearest rivals list the Intel Core i3-9100F (1903, -0.1%), the Xeon E5-2620 v3 itself (1907, -0.3%), and the Xeon E3-1285 v4 (1908, -0.3%). This near-tie in aggregate scores masks the fact that the benchmarks are weighted toward different strengths: Cinebench tests for the Xeon, Geekbench for the Ryzen.

In Cinebench R15, the Xeon scores 664 multi-core and 93 single-core. In R20, it scores 2769 multi-core and 391 single-core. The single-core scores are low relative to modern chips, reflecting Haswell’s age. The Ryzen’s Geekbench single-core score of 1237, while not directly comparable, suggests a much faster per-core engine. For any task that relies on a single thread—legacy software, certain games, spreadsheet recalculation—the Ryzen will feel noticeably snappier.

FAQ

Q: Which CPU has more cores and threads?

A: The Intel Xeon E5-2620 v3 has 6 cores and 12 threads, while the AMD Ryzen 3 5125C has 2 cores and 4 threads.

Q: What are the TDP differences?

A: The Xeon E5-2620 v3 has a TDP of 85 W, whereas the Ryzen 3 5125C has a TDP of just 15 W, making the Ryzen significantly more power-efficient.

Q: Does either CPU support ECC memory?

A: The Xeon E5-2620 v3 supports ECC memory; the Ryzen 3 5125C does not.

Q: Which CPU has integrated graphics?

A: The Ryzen 3 5125C includes Radeon Vega 3 integrated graphics, while the Xeon E5-2620 v3 has no integrated graphics.

Q: How do their average benchmark scores compare?

A: The Xeon E5-2620 v3 has an average benchmark score of 1907, and the Ryzen 3 5125C has an average of 1902—a difference of only 5 points.

Q: What is the memory bandwidth of each CPU?

A: The Xeon E5-2620 v3 provides 59.7 GB/s via quad-channel DDR4, while the Ryzen 3 5125C provides 51.2 GB/s via dual-channel DDR4.

The Verdict

Pick the Intel Xeon E5-2620 v3 if your workload demands parallel processing. Its 6 cores and 12 threads deliver Cinebench R23 multi-core scores of 6595, which is more than double what a 2-core chip can achieve in the same test. It offers quad-channel memory with 59.7 GB/s bandwidth, 40 PCIe Gen 3 lanes, and ECC support—all essential for server, virtualization, or workstation tasks. The 15 MB shared L3 cache helps with large working sets. Its 85 W TDP is acceptable in a desktop or server chassis, and its 22 nm process is old but adequate for sustained throughput. The $417 launch MSRP reflects its original server positioning.

Pick the AMD Ryzen 3 5125C if you prioritize single-thread speed, power efficiency, or integrated graphics. Its 3.00 GHz base clock on Zen 3, paired with 512 KB L2 per core, makes it far more responsive in everyday tasks. The 15 W TDP is ideal for thin-and-light laptops or fanless designs. The integrated Radeon Vega 3 handles basic display output without a discrete GPU. The 8 MB L3 cache is smaller than the Xeon’s, but for a 2-core part it is proportionally generous. It is an active, modern part from 2022, while the Xeon is end-of-life from 2014.

The data does not support a single “best” CPU—it supports a use-case split. For multi-threaded rendering or server duty, the Xeon is clearly superior. For mobile computing or single-threaded workloads, the Ryzen is the obvious choice. Their near-identical average benchmark scores (1907 vs. 1902) and equal 43rd percentile ranking mean that raw aggregate performance is a wash; the deciding factor is which workload you will run most often.

Specification Differences

| Specification | Intel Xeon E5-2620 v3 | AMD Ryzen 3 5125C |

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

| Cores | 6 | 2 |

| Threads | 12 | 4 |

| Base Clock | 2.40 GHz | 3.00 GHz |

| Boost Clock | 3.20 GHz | Not listed |

| TDP | 85 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 | 15 MB (shared) | 8 MB (shared) |

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

| Memory Bandwidth | 59.7 GB/s | 51.2 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 3, 40 Lanes (CPU only) | Gen 3, 8 Lanes (CPU only) |

| Integrated Graphics | None | Radeon Vega 3 |

| Market Segment | Server/Workstation | Mobile |

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

| Release Date | 2014-09-07 | 2022-05-04 |

| Launch MSRP | $417 | Not listed |

| Multiplier Unlocked | No | No |