AMD Ryzen 5 3400G vs Intel Xeon W-2123 Comparison

The Intel Xeon W-2123 and AMD Ryzen 5 3400G are both 4-core, 8-thread processors, yet they occupy entirely different corners of the hardware landscape. The data reveals a clear performance winner in the Ryzen 5 3400G, which dominates every single head-to-head benchmark, but the Xeon W-2123 counters with platform-level features like quad-channel memory and ECC support that the Ryzen simply does not offer. This comparison is less about raw speed and more about what each platform is designed to accomplish.

Where Each One Wins

The AMD Ryzen 5 3400G wins every single benchmark in the comparison, making it the outright performance champion across all tested workloads. In Cinebench R15, R20, and R23, both multi-core and single-core tests, the Ryzen 5 3400G posts higher scores than the Xeon W-2123. The margin is consistent, hovering around 8% across all six tests, which suggests a fundamental clock-speed and architectural advantage rather than a workload-specific quirk.

The Intel Xeon W-2123, however, wins in areas that benchmarks do not directly measure. Its platform supports quad-channel DDR4 memory with a bandwidth of 85.3 GB/s, compared to the Ryzen’s dual-channel 46.9 GB/s. The Xeon also supports ECC memory, a feature absent from the Ryzen 5 3400G. For workloads that are memory-bandwidth sensitive or require error-correcting code for data integrity, the Xeon platform holds a clear edge despite losing every compute benchmark.

The Ryzen 5 3400G also wins on integrated graphics, featuring Radeon RX Vega 11, while the Xeon W-2123 has no integrated graphics at all. This means the Ryzen can power a display without a discrete GPU, a capability the Xeon lacks entirely. The Ryzen’s 65W TDP is also notably lower than the Xeon’s 120W, indicating better power efficiency for the same core count.

Architecture Differences

The two processors come from different architectural generations and manufacturing processes. The Intel Xeon W-2123 is built on Skylake-W architecture using a 14 nm process at Intel’s foundry, with a die size of 484 mm². The AMD Ryzen 5 3400G uses Zen+ architecture, specifically the Picasso codename, on a 12 nm process at GlobalFoundries, with a much smaller die size of 210 mm² and 4,940 million transistors.

Cache configurations differ significantly. The Xeon W-2123 has 64 KB of L1 cache per core and 1 MB of L2 cache per core, along with a large 8.25 MB shared L3 cache. The Ryzen 5 3400G has 96 KB of L1 cache per core and 512 KB of L2 cache per core, but only 4 MB of shared L3 cache. The Xeon’s larger L3 cache likely helps in scenarios where repeated data access is common, though the benchmark data does not show this translating into a compute win.

Memory architecture is a major differentiator. The Xeon W-2123 supports quad-channel DDR4 with 85.3 GB/s bandwidth and ECC memory. The Ryzen 5 3400G supports dual-channel DDR4 with 46.9 GB/s bandwidth and no ECC. The Xeon also offers 48 PCIe Gen 3 lanes from the CPU, while the Ryzen’s PCIe Gen 3 lane count is not specified in the data. The Xeon is a server/workstation part, while the Ryzen is a desktop part.

The Xeon W-2123 has a base clock of 3.60 GHz and boost clock of 3.90 GHz, while the Ryzen 5 3400G has a higher base clock of 3.70 GHz and boost clock of 4.20 GHz. The Ryzen’s higher clocks are a likely contributor to its benchmark lead. The Ryzen also has an unlocked multiplier, allowing overclocking, while the Xeon is locked.

Head-to-Head Benchmarks

The head-to-head data shows a consistent pattern: the AMD Ryzen 5 3400G wins all six Cinebench tests, with deltas ranging from -8.1% to -8.4% (the negative sign indicates the Xeon’s score is lower). In Cinebench R15 multi-core, the Ryzen scores 789 against the Xeon’s 724, an 8.2% difference. Single-core R15 shows 111 versus 102, an 8.1% gap.

Moving to Cinebench R20, the multi-core test shows the Ryzen at 3290 versus the Xeon at 3019, again an 8.2% difference. Single-core R20 shows 464 against 425, an 8.4% gap. In Cinebench R23, the Ryzen scores 7835 multi-core versus the Xeon’s 7189, an 8.2% difference, and 1106 single-core versus 1014, an 8.3% gap.

The consistency of the ~8% delta across all tests is notable. It suggests the Ryzen 5 3400G has a uniform performance advantage that is likely clock-driven, given its 4.20 GHz boost versus the Xeon’s 3.90 GHz. The Ryzen’s higher L1 cache per core (96 KB vs 64 KB) may also contribute to its single-core advantage.

The Xeon W-2123’s average benchmark score is 2079, with a percentile rank of 46. Its nearest rival is the Intel Core i3-9350KF at 2082 (delta -0.1%) and the Intel Xeon E5-2628 v3 at 2076 (delta 0.1%). The Ryzen 5 3400G’s average score is 2059, percentile 46, with nearest rivals including the Intel Core i3-10105T at 2058 (delta 0.1%) and the Intel Core i7-8705G at 2058 (delta 0.1%). Both processors sit in the same performance percentile, but the head-to-head tests show the Ryzen is consistently ahead.

The Verdict

The data is unambiguous: the AMD Ryzen 5 3400G outperforms the Intel Xeon W-2123 in every benchmark test conducted. If the selection criterion is purely compute performance, the Ryzen 5 3400G is the superior choice, offering roughly 8% higher scores across all Cinebench workloads. Its higher clock speeds, smaller process node, and larger per-core L1 cache give it a measurable edge.

However, the Intel Xeon W-2123 targets a different use case. Its quad-channel memory support with 85.3 GB/s bandwidth, ECC memory capability, and 48 PCIe Gen 3 lanes position it for workstation and server environments where data integrity and memory throughput are critical. The Ryzen 5 3400G’s dual-channel memory and lack of ECC make it less suitable for those scenarios, despite its compute advantage.

The Ryzen 5 3400G also brings integrated Radeon RX Vega 11 graphics, making it a complete package for a desktop system without a discrete GPU. The Xeon W-2123 has no integrated graphics, requiring a separate graphics card for any display output. The Ryzen’s lower 65W TDP versus the Xeon’s 120W further reinforces its efficiency advantage.

For a desktop user prioritizing raw compute and integrated graphics, the Ryzen 5 3400G is the clear winner. For a workstation builder needing ECC memory, quad-channel bandwidth, and extensive PCIe lanes, the Xeon W-2123 offers platform features the Ryzen cannot match, even though it loses on raw speed.

FAQ

Q: Which processor has higher single-core performance?

A: The AMD Ryzen 5 3400G wins all single-core Cinebench tests, scoring 111 in R15, 464 in R20, and 1106 in R23, versus the Intel Xeon W-2123’s 102, 425, and 1014 respectively.

Q: Does the Intel Xeon W-2123 support ECC memory?

A: Yes, the Intel Xeon W-2123 supports ECC memory. The AMD Ryzen 5 3400G does not support ECC memory.

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

A: The Intel Xeon W-2123 has quad-channel memory support with 85.3 GB/s bandwidth, while the AMD Ryzen 5 3400G has dual-channel support with 46.9 GB/s bandwidth.

Q: Which processor has integrated graphics?

A: Only the AMD Ryzen 5 3400G has integrated graphics, featuring Radeon RX Vega 11. The Intel Xeon W-2123 has no integrated graphics.

Q: How do their average benchmark scores compare?

A: The Intel Xeon W-2123 has an average benchmark score of 2079, while the AMD Ryzen 5 3400G has an average score of 2059. Both sit at the 46th percentile of all CPUs.

Q: What are the boost clock speeds?

A: The AMD Ryzen 5 3400G has a boost clock of 4.20 GHz, while the Intel Xeon W-2123 has a boost clock of 3.90 GHz.

Specification Differences

| Specification | Intel Xeon W-2123 | AMD Ryzen 5 3400G |

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

| Base Clock | 3.60 GHz | 3.70 GHz |

| Boost Clock | 3.90 GHz | 4.20 GHz |

| TDP | 120 W | 65 W |

| Socket | Intel Socket 2066 | AMD Socket AM4 |

| Architecture | Skylake | Zen+ |

| Codename | Skylake-W | Picasso |

| Process Node | 14 nm | 12 nm |

| Die Size | 484 mm² | 210 mm² |

| L1 Cache | 64 KB (per core) | 96 KB (per core) |

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

| L3 Cache | 8.25 MB (shared) | 4 MB (shared) |

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

| Memory Bandwidth | 85.3 GB/s | 46.9 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 3, 48 Lanes (CPU only) | Gen 3 |

| Integrated Graphics | None | Radeon RX Vega 11 |

| Market Segment | Server/Workstation | Desktop |

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

| Release Date | 2017-08-28 | 2019-07-06 |

| Launch MSRP | $294 | $149 |

| Multiplier Unlocked | No | Yes |