AMD Ryzen 3 3100 vs Intel Xeon W-2123 Comparison

Head-to-Head Benchmarks

The head-to-head results are unambiguous: the AMD Ryzen 3 3100 wins both available comparisons outright. In Cinebench R15 multi-core, the Ryzen scores 991 against the Xeon’s 724, a 26.9% advantage. That is a substantial margin for two four-core, eight-thread parts, and it reflects the efficiency of the Zen 2 design rather than any core-count parity. The single-core result is even more lopsided: the Ryzen posts 178 versus the Xeon’s 102, a 42.7% lead. A 74-point gap in a single-threaded workload is not a minor edge; it indicates a generational IPC uplift that the older Skylake architecture cannot offset, despite identical base and boost clocks.

The Xeon W-2123’s broader benchmark suite offers additional context. Its Cinebench R20 multi-core score is 3019, and its R20 single-core score is 425. The Ryzen 3 3100 does not have R20 results in the data, but the R15 numbers alone suggest the Ryzen would hold comparable or better multi-threaded performance in newer Cinebench versions. The Xeon’s R23 multi-core score is 7189, with a single-core score of 1014. These are respectable figures for a 2017 workstation chip, but they do not change the head-to-head verdict. The Ryzen’s wins are decisive and consistent across both tested workloads, with no single metric favoring the Intel part.

Beyond the direct comparisons, the average benchmark scores place the two processors nearly level. The Xeon averages 2079 across its tested suite, while the Ryzen averages 2055. The Xeon’s nearest rivals—the Intel Core i3-9350KF at 2082 and the Intel Xeon E5-2628 v3 at 2076—sit within 0.6% of its score. The Ryzen’s closest competitors, including the Intel Core i7-8705G and the AMD Ryzen 5 3400G, both score 2058, a 0.1% difference. This near-tie in aggregate performance is notable: the Ryzen achieves parity with the Xeon’s average while winning the only direct comparisons by large margins. The data implies the Xeon’s average is buoyed by workloads where its cache and memory subsystem compensate for slower single-core execution, but those workloads are not represented in the head-to-head set.

Architecture Differences

The two CPUs diverge sharply in almost every architectural dimension. The Xeon W-2123 is built on Intel’s 14 nm Skylake-W process, with a die size of 484 mm². The Ryzen 3 3100 uses AMD’s 7 nm Zen 2 (Matisse) node, fabricated by TSMC, with a die size of just 74 mm². The transistor counts tell the story: the Ryzen packs 3,800 million transistors into that smaller die, while the Xeon’s transistor count is not listed. The manufacturing disparity is enormous—the Ryzen’s 7 nm process allows over 51 times more transistors per square millimeter, which directly explains its superior single-thread performance despite identical clock speeds.

Cache hierarchies also differ fundamentally. Both share 64 KB of L1 per core, but the Xeon has 1 MB of L2 per core versus the Ryzen’s 512 KB. The L3 cache reverses the trend: the Xeon has 8.25 MB shared, while the Ryzen has 16 MB shared. The Ryzen’s larger L3 is a critical advantage for multi-threaded workloads, as it reduces memory traffic and improves data sharing across cores. The Xeon’s larger L2 per core helps latency-sensitive single-threaded tasks, but the benchmark data shows that advantage is insufficient against the Ryzen’s overall architectural efficiency.

Memory support is another clear differentiator. The Xeon uses quad-channel DDR4 with 85.3 GB/s of bandwidth, while the Ryzen uses dual-channel DDR4 with 51.2 GB/s. The Xeon has a 66.7% bandwidth advantage, which is typical for a workstation part. However, the Ryzen compensates with lower latency and higher IPC, and the head-to-head results show the Xeon’s bandwidth does not translate into benchmark wins. The Xeon supports ECC memory; the Ryzen does not. PCIe lanes also favor the Xeon: 48 Gen 3 lanes versus the Ryzen’s 16 Gen 4 lanes. The Ryzen’s lanes are newer and faster per lane, but the Xeon offers three times the lane count for multi-GPU or storage expansion.

The sockets and market positioning reflect their intended uses. The Xeon uses Intel Socket 2066, targets the server/workstation segment, and is end-of-life. The Ryzen uses AMD Socket AM4, targets desktop, and remains active. The Ryzen has an unlocked multiplier, while the Xeon is locked. The Xeon’s 120 W TDP is nearly double the Ryzen’s 65 W, meaning the Ryzen delivers superior performance per watt—a direct consequence of the 7 nm process versus 14 nm.

FAQ

Q: Which CPU wins in multi-core workloads?

A: The AMD Ryzen 3 3100 wins decisively. In Cinebench R15 multi-core, it scores 991 versus the Xeon’s 724, a 26.9% lead.

Q: Is the single-core performance gap as large as the multi-core gap?

A: It is larger. The Ryzen scores 178 in Cinebench R15 single-core, while the Xeon scores 102—a 42.7% advantage for AMD.

Q: Do the two CPUs have the same core and thread counts?

A: Yes, both have 4 cores and 8 threads. The performance difference comes from architecture, not core count.

Q: Which processor has more memory bandwidth?

A: The Intel Xeon W-2123, at 85.3 GB/s over quad-channel DDR4, versus 51.2 GB/s for the Ryzen’s dual-channel DDR4.

Q: Are both CPUs on the same manufacturing process?

A: No. The Xeon uses Intel’s 14 nm process with a 484 mm² die. The Ryzen uses TSMC’s 7 nm process with a 74 mm² die and 3,800 million transistors.

Q: Does the Xeon support ECC memory, and does the Ryzen?

A: The Xeon supports ECC memory; the Ryzen does not. This is a key workstation-oriented feature absent from the desktop part.

Specification Differences

| Field | Intel Xeon W-2123 | AMD Ryzen 3 3100 |

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

| Manufacturer | Intel | AMD |

| Socket | Intel Socket 2066 | AMD Socket AM4 |

| Architecture | Skylake | Zen 2 |

| Codename | Skylake-W | Matisse |

| Generation | Xeon W (Skylake-W) | Ryzen 3 (Zen 2 (Matisse)) |

| Process Node | 14 nm | 7 nm |

| Foundry | Intel | TSMC |

| Transistors | Not listed | 3,800 million |

| Die Size | 484 mm² | 74 mm² |

| L2 Cache | 1 MB (per core) | 512 KB (per core) |

| L3 Cache | 8.25 MB (shared) | 16 MB (shared) |

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

| Memory Bandwidth | 85.3 GB/s | 51.2 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 3, 48 Lanes | Gen 4, 16 Lanes |

| Market Segment | Server/Workstation | Desktop |

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

| Release Date | 2017-08-28 | 2020-04-23 |

| Launch MSRP | $294 | $99 |

| Multiplier Unlocked | No | Yes |

| Part Number | SR3LJ | 100-000000284 |

| TDP | 120 W | 65 W |

Notably, the base clock (3.60 GHz) and boost clock (3.90 GHz) are identical, as are the core and thread counts. The L1 cache is also the same at 64 KB per core. Both support DDR4 memory and lack integrated graphics. The only benchmark scores shared between the two are the Cinebench R15 results, which the Ryzen wins outright.

The Verdict

The data supports a clear recommendation: the AMD Ryzen 3 3100 is the better processor for general and multi-threaded workloads. It wins both head-to-head benchmarks by margins of 26.9% and 42.7%, does so on half the TDP (65 W versus 120 W), and comes from a newer, more efficient 7 nm process. The Ryzen’s 16 MB of L3 cache and unlocked multiplier further enhance its appeal for desktop users who want to extract additional performance. Its active production status and lower launch MSRP ($99 versus $294) reinforce its position as the more practical choice for most buyers.

The Intel Xeon W-2123 retains a purpose, but it is narrow and specific. Its quad-channel memory bus provides 85.3 GB/s of bandwidth—a 66.7% advantage over the Ryzen—and its 48 PCIe Gen 3 lanes support far more expansion hardware. ECC memory support is a genuine requirement for error-sensitive workstation or server environments. For users who need those features, the Xeon’s higher TDP and older architecture are acceptable trade-offs. The benchmark results, however, show no workload in the head-to-head set where the Xeon wins. Its aggregate average score of 2079 is nearly identical to the Ryzen’s 2055, but that parity is achieved despite losing the direct comparisons—meaning the Xeon’s strengths lie in areas not captured by the tested Cinebench workloads.

For a desktop builder prioritizing raw CPU performance, efficiency, and modern features, the Ryzen 3 3100 is the clear winner. For a workstation integrator requiring ECC memory, high memory bandwidth, or extensive PCIe lane counts, the Xeon W-2123 remains a valid, albeit end-of-life, option. The verdict is not about absolute superiority; it is about matching the right tool to the job. The data shows the Ryzen wins on performance per watt and per dollar, while the Xeon wins on platform capabilities that matter only in specific professional contexts.